Article(id=1297211810931826818, tenantId=1146029695717560320, journalId=1296125453100220459, issueId=1297211624738284246, articleNumber=null, orderNo=null, doi=10.11975/j.issn.1002-6819.202510095, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1760457600000, receivedDateStr=2025-10-15, revisedDate=1770134400000, revisedDateStr=2026-02-04, acceptedDate=null, acceptedDateStr=null, onlineDate=1787208996756, onlineDateStr=2026-08-20, pubDate=1782748800000, pubDateStr=2026-06-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1787208996756, onlineIssueDateStr=2026-08-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1787208996755, creator=13701087609, updateTime=1787208996755, updator=13701087609, issue=Issue{id=1297211624738284246, tenantId=1146029695717560320, journalId=1296125453100220459, year='2026', volume='42', issue='12', pageStart='1', pageEnd='396', issueExtLink='null', onlineDate='null', pubDate='1782748800000', pubDateStr='2026-06-30', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1787208952364, creator='13701087609', updateTime=1787212261177, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1297225503002357852, tenantId=1146029695717560320, journalId=1296125453100220459, issueId=1297211624738284246, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1297225503002357853, tenantId=1146029695717560320, journalId=1296125453100220459, issueId=1297211624738284246, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=258, endPage=267, ext={EN=ArticleExt(id=1297211811741327491, articleId=1297211810931826818, tenantId=1146029695717560320, journalId=1296125453100220459, language=EN, title=Remote sensing identification of irrigation information in Guanzhong Region using spatiotemporal fusion algorithm, columnId=1297211683278189232, journalTitle=Transactions of the Chinese Society of Agricultural Engineering, columnName=Agricultural Information and Electrical Technologies, runingTitle=null, highlight=null, articleAbstract=
Satellite remote sensing can identify the irrigation information, because of its rapid and wide-area observation. However, only a single source is often extracted from remote sensing data. Spatial and temporal resolution cannot fully meet the requirement for the high-accuracy and dynamic identification of irrigation information at the regional scale, especially for the strong spatial heterogeneity of agricultural activities in the complex terrain. In this study, a remote sensing framework was developed to identify the irrigation information using drought index analysis and spatiotemporal fusion. The Guanzhong Region was also taken as the study area. The temperature vegetation dryness index (TVDI) was selected as the identification index after correlation analysis between drought indices and soil moisture. Elevation correction with fusion optimization was introduced to characterize the variation in the soil moisture. Its spatiotemporal fusion accuracy was also enhanced under complex terrain conditions. Subsequently, the enhanced spatial and temporal adaptive reflectance fusion model (ESTARFM) was used to fuse high-spatial-resolution Landsat imagery and high-temporal-resolution MODIS data for the high-spatiotemporal-resolution TVDI time series. Spring irrigation information in the Guanzhong Region in 2024 was identified using the threshold method with precipitation data. The results showed that the correlations between the remote sensing drought indices and soil moisture at the 10-20 cm depth were generally higher than those with soil moisture at the 0-10 cm depth. Elevation topographic correction effectively reduced the influence of terrain on land surface temperature. There was a strong correlation between TVDI and soil moisture. Furthermore, the elevation-corrected TVDI showed a strong negative correlation with soil moisture at the 10-20 cm depth, with the maximum correlation coefficient of −0.77 during the spring crop growth period. Normalized difference vegetation index (NDVI) and land surface temperature (LST) were fused for the higher accuracy of TVDI than the strategy of first calculation and then fusion. R2 and RMSE values of 0.76 and 0.07 for the former, whereas 0.44 and 0.13 for the latter, respectively. The validation showed that the overall accuracy was 90.8% for the identification in the Donglei Phase II irrigation district, with a Kappa coefficient of 0.80. The mean error was 15.1% and 14.3%, respectively, for accumulated and actual irrigated areas in the irrigation districts. Regional identification results indicated that the spring irrigation was mainly concentrated from March to April, with the irrigation frequency ranging from one to two times. Irrigated areas were distributed in the relatively flat Weihe Plain, with a spatial pattern characterized by broader irrigation extent and higher irrigation frequency in the eastern and western parts. While the central part exhibited relatively lower irrigation intensity. The spatial distribution and irrigation frequency of spring irrigation were dominated by regional topography, water supply, and cropping structure. The finding can provide a strong reference to identify the regional-scale irrigation information and water resources under complex terrains.
, authors=Yubao WANG, Wentao LIU, Jiayi DING, Yitian CHEN, Peishuo WANG, Yakun WANG
*, authorsList=Yubao WANG, Wentao LIU, Jiayi DING, Yitian CHEN, Peishuo WANG, Yakun WANG, authorCompany=null, correspAuthors=Yakun WANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright © 2026 Transactions of the Chinese Society of Agricultural Engineering., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1297211815985963151, articleId=1297211810931826818, tenantId=1146029695717560320, journalId=1296125453100220459, language=CN, title=基于时空融合算法的关中地区灌溉信息遥感识别, columnId=1297211683441767090, journalTitle=农业工程学报, columnName=农业信息与电气技术, runingTitle=null, highlight=null, articleAbstract=
卫星遥感技术凭借快速、大范围观测的特点,在灌溉面积和灌溉频次等信息识别中具有显著优势。然而,单一遥感数据源受影像时空分辨率限制,难以满足区域尺度灌溉信息高精度动态识别需求。该研究以关中地区为研究区,构建了基于干旱指数分析与时空融合算法的灌溉信息遥感识别方法。通过干旱指数与土壤湿度相关性分析,选取温度植被干旱指数(temperature vegetation dryness index,TVDI)作为识别指标,并结合高程校正与融合策略优化,提升复杂地形条件下TVDI对土壤水分的表征能力及其时空融合精度。随后,采用增强时空自适应反射率融合模型融合Landsat与MODIS影像,生成高时空分辨率TVDI时间序列,结合阈值判别法识别2024年关中地区春灌信息。结果表明,经高程校正后的TVDI在春季作物生育阶段与土壤湿度相关性较高(相关系数最高达−0.77);TVDI融合过程中,“先融合NDVI与LST后计算TVDI”的策略融合精度更高(R2=0.76,RMSE=0.07)。灌区尺度验证结果表明,东雷二期抽黄灌区灌溉面积识别总体精度为90.8%,Kappa系数为0.80;3个验证灌区累积灌溉面积与实际灌溉面积平均识别误差分别为15.1%和14.3%。关中地区春灌信息识别结果表明,春灌活动主要集中于3—4月,灌溉次数以1~2次为主,灌溉区域主要分布于渭河平原。研究结果可为复杂地形条件下区域尺度灌溉信息识别提供方法参考。
, authors=王玉宝, 刘文涛, 丁佳怡, 陈怡田, 王佩硕, 王亚昆
*, authorsList=王玉宝, 刘文涛, 丁佳怡, 陈怡田, 王佩硕, 王亚昆, authorCompany=null, correspAuthors=王亚昆, authorNote=
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, copyrightStatement=版权所有 © 2026 农业工程学报编辑部, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=mDXZcSv3WgOOK8c9LKU1dA==, magXml=qZJGgY5sxzM10vycWtBzaQ==, pdfUrl=null, pdf=L5nhUU7HbWQWlrEcCFK8XA==, pdfFileSize=4053352, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=h9knXgU8LcppTsPNyecn1Q==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=duKNlfPxVstGiItZ15P0ZQ==, mapNumber=null, fund=null)}, authors=[Author(id=1299828243981423024, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wangyb@nwafu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1299828244103057843, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, authorId=1299828243981423024, language=EN, stringName=Yubao WANG, firstName=Yubao, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=
1Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A & F University, Yangling 712100, China
2Institute of Water-Saving Agriculture in Arid Areas, Northwest A & F University, Yangling 712100, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1299828244178555316, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, authorId=1299828243981423024, language=CN, stringName=王玉宝, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=
1西北农林科技大学旱区农业水土工程教育部重点实验室,杨凌 712100
2西北农林科技大学中国旱区节水农业研究院,杨凌 712100, bio={"content":"
王玉宝,研究员,博士生导师,研究方向为农业水土资源管理。Email:wangyb@nwafu.edu.cn
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王玉宝,研究员,博士生导师,研究方向为农业水土资源管理。Email:wangyb@nwafu.edu.cn
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2西北农林科技大学中国旱区节水农业研究院,杨凌 712100)])]), Author(id=1299828244262441398, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1299828244367299001, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, authorId=1299828244262441398, language=EN, stringName=Wentao LIU, firstName=Wentao, middleName=null, lastName=LIU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=
1Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A & F University, Yangling 712100, China
2Institute of Water-Saving Agriculture in Arid Areas, Northwest A & F University, Yangling 712100, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1299828244446990778, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, authorId=1299828244262441398, language=CN, stringName=刘文涛, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=
1西北农林科技大学旱区农业水土工程教育部重点实验室,杨凌 712100
2西北农林科技大学中国旱区节水农业研究院,杨凌 712100, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1299828243796873641, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, xref=1, ext=[AuthorCompanyExt(id=1299828243813650858, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, companyId=1299828243796873641, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1西北农林科技大学旱区农业水土工程教育部重点实验室,杨凌 712100)]), AuthorCompany(id=1299828243884954028, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, xref=2, ext=[AuthorCompanyExt(id=1299828243897536941, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, companyId=1299828243884954028, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2Institute of Water-Saving Agriculture in Arid Areas, Northwest A & F University, Yangling 712100, China), AuthorCompanyExt(id=1299828243910119854, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, companyId=1299828243884954028, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2西北农林科技大学中国旱区节水农业研究院,杨凌 712100)])]), Author(id=1299828244585402812, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1299828244673483199, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, authorId=1299828244585402812, language=EN, stringName=Jiayi DING, firstName=Jiayi, middleName=null, lastName=DING, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=
1Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A & F University, Yangling 712100, China
2Institute of Water-Saving Agriculture in Arid Areas, Northwest A & F University, Yangling 712100, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1299828244736397760, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, authorId=1299828244585402812, language=CN, stringName=丁佳怡, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=
1西北农林科技大学旱区农业水土工程教育部重点实验室,杨凌 712100
2西北农林科技大学中国旱区节水农业研究院,杨凌 712100, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1299828243796873641, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, xref=1, ext=[AuthorCompanyExt(id=1299828243813650858, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, companyId=1299828243796873641, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1西北农林科技大学旱区农业水土工程教育部重点实验室,杨凌 712100)]), AuthorCompany(id=1299828243884954028, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, xref=2, ext=[AuthorCompanyExt(id=1299828243897536941, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, companyId=1299828243884954028, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2西北农林科技大学中国旱区节水农业研究院,杨凌 712100)])]), Author(id=1299828244807700930, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1299828245017416133, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, authorId=1299828244807700930, language=EN, stringName=Yitian CHEN, firstName=Yitian, middleName=null, lastName=CHEN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=
1Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A & F University, Yangling 712100, China
2Institute of Water-Saving Agriculture in Arid Areas, Northwest A & F University, Yangling 712100, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1299828245151633862, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, authorId=1299828244807700930, language=CN, stringName=陈怡田, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=
1西北农林科技大学旱区农业水土工程教育部重点实验室,杨凌 712100
2西北农林科技大学中国旱区节水农业研究院,杨凌 712100, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1299828243796873641, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, xref=1, ext=[AuthorCompanyExt(id=1299828243813650858, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, companyId=1299828243796873641, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Fusion accuracy of NDVI, LST and TVDI with ESTARFM, figureFileSmall=yEJtSRK+GzF9j1F0bDu5AQ==, figureFileBig=hFqTqvcUcdYdYHZ5hd14dA==, tableContent=null), ArticleFig(id=1299828248402219488, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=CN, label=图2, caption=
基于ESTARFM模型的NDVI、LST及TVDI融合精度注:图c与图d分别为策略1(先融合NDVI与LST后计算TVDI)和策略2(先计算TVDI再进行融合)生成的TVDI融合影像与Landsat原始TVDI影像的散点图,影像日期为03-19。
, figureFileSmall=yEJtSRK+GzF9j1F0bDu5AQ==, figureFileBig=hFqTqvcUcdYdYHZ5hd14dA==, tableContent=null), ArticleFig(id=1299828248481911265, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=EN, label=Fig.3, caption=
Daily precipitation at meteorological stations, figureFileSmall=Mq/hEI0FRw/pEbe/GPfxNQ==, figureFileBig=EVFzqqf8w/G+sRiRAXuZRg==, tableContent=null), ArticleFig(id=1299828248553214434, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=CN, label=图3, caption=
气象站点日降水量, figureFileSmall=Mq/hEI0FRw/pEbe/GPfxNQ==, figureFileBig=EVFzqqf8w/G+sRiRAXuZRg==, tableContent=null), ArticleFig(id=1299828248645489123, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=EN, label=Fig.4, caption=
TVDI difference of cropland and spring irrigation identification results in the Guanzhong Region in 2024, figureFileSmall=+Ir4ZyzXbuF62XzweLgE8Q==, figureFileBig=mFMjUKCi+44wUU4v0njfxA==, tableContent=null), ArticleFig(id=1299828248746152420, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=CN, label=图4, caption=
2024年关中地区耕地TVDI差值和春灌识别结果, figureFileSmall=+Ir4ZyzXbuF62XzweLgE8Q==, figureFileBig=mFMjUKCi+44wUU4v0njfxA==, tableContent=null), ArticleFig(id=1299828248867787237, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=EN, label=Fig.5, caption=
Distribution of spring irrigation frequency in Guanzhong Region in 2024, figureFileSmall=F8szjfG/fC/6HSG8gvN4cA==, figureFileBig=Iq3Ny5cLl4USj0CnAO1+WQ==, tableContent=null), ArticleFig(id=1299828248943284710, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=CN, label=图5, caption=
2024年关中地区春灌频次分布, figureFileSmall=F8szjfG/fC/6HSG8gvN4cA==, figureFileBig=Iq3Ny5cLl4USj0CnAO1+WQ==, tableContent=null), ArticleFig(id=1299828249060725223, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=EN, label=Tab.1, caption=
Correlation coefficient between drought indices and soil moisture at different depths
, figureFileSmall=null, figureFileBig=null, tableContent=
土层深度 soil depth/cm | 日期 Date | PDI | MPDI | VSWI | TVDI | TVDI′ |
| 注:PDI:垂直干旱指数;MPDI:改进型垂直干旱指数;VSWI:植被供水指数;TVDI:温度植被干旱指数。TVDI′由高程校正后的地表温度LST计算得到,以上数据均通过0.01显著性水平的检验。 |
| Note: PDI: perpendicular drought index; MPDI: modified perpendicular drought index; VSWI: vegetation supply water index; TVDI: temperature vegetation dryness index. TVDI′ is calculated from the elevation corrected surface temperature. All values are significant at the 0.01 level. |
| 0~10 | 11-14 | −0.53 | −0.60 | 0.61 | −0.52 | −0.55 |
| 12-24 | −0.55 | −0.66 | 0.62 | −0.50 | −0.52 |
| 03-06 | −0.70 | −0.73 | 0.67 | −0.72 | −0.74 |
| 04-07 | −0.56 | −0.61 | 0.55 | −0.70 | −0.73 |
| 04-23 | −0.60 | −0.59 | 0.60 | −0.66 | −0.74 |
| 05-09 | −0.63 | −0.56 | 0.67 | −0.57 | −0.60 |
| 10~20 | 11-14 | −0.56 | −0.61 | 0.61 | −0.52 | −0.56 |
| 12-24 | −0.53 | −0.66 | 0.63 | −0.51 | −0.54 |
| 03-06 | −0.72 | −0.73 | 0.68 | −0.74 | −0.76 |
| 04-07 | −0.59 | −0.62 | 0.56 | −0.72 | −0.77 |
| 04-23 | −0.63 | −0.59 | 0.61 | −0.66 | −0.75 |
| 05-09 | −0.64 | −0.56 | 0.69 | −0.61 | −0.64 |
), ArticleFig(id=1299828249144611304, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=CN, label=表1, caption=
各干旱指数与不同土层土壤湿度相关系数
, figureFileSmall=null, figureFileBig=null, tableContent=
土层深度 soil depth/cm | 日期 Date | PDI | MPDI | VSWI | TVDI | TVDI′ |
| 注:PDI:垂直干旱指数;MPDI:改进型垂直干旱指数;VSWI:植被供水指数;TVDI:温度植被干旱指数。TVDI′由高程校正后的地表温度LST计算得到,以上数据均通过0.01显著性水平的检验。 |
| Note: PDI: perpendicular drought index; MPDI: modified perpendicular drought index; VSWI: vegetation supply water index; TVDI: temperature vegetation dryness index. TVDI′ is calculated from the elevation corrected surface temperature. All values are significant at the 0.01 level. |
| 0~10 | 11-14 | −0.53 | −0.60 | 0.61 | −0.52 | −0.55 |
| 12-24 | −0.55 | −0.66 | 0.62 | −0.50 | −0.52 |
| 03-06 | −0.70 | −0.73 | 0.67 | −0.72 | −0.74 |
| 04-07 | −0.56 | −0.61 | 0.55 | −0.70 | −0.73 |
| 04-23 | −0.60 | −0.59 | 0.60 | −0.66 | −0.74 |
| 05-09 | −0.63 | −0.56 | 0.67 | −0.57 | −0.60 |
| 10~20 | 11-14 | −0.56 | −0.61 | 0.61 | −0.52 | −0.56 |
| 12-24 | −0.53 | −0.66 | 0.63 | −0.51 | −0.54 |
| 03-06 | −0.72 | −0.73 | 0.68 | −0.74 | −0.76 |
| 04-07 | −0.59 | −0.62 | 0.56 | −0.72 | −0.77 |
| 04-23 | −0.63 | −0.59 | 0.61 | −0.66 | −0.75 |
| 05-09 | −0.64 | −0.56 | 0.69 | −0.61 | −0.64 |
), ArticleFig(id=1299828249249468905, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=EN, label=Tab.2, caption=
Accuracy of irrigation area identification in Donglei Phase II irrigation district
, figureFileSmall=null, figureFileBig=null, tableContent=
类型 Types | 生产者精度 Producer accuracy/% | 用户精度 User accuracy/% |
| 灌溉 Irrigation | 91.9 | 94.2 |
| 非灌溉 Non-irrigation | 88.7 | 84.5 |
| 总体精度Overall accuracy:90.8%,Kappa系数Kappa coefficient:0.80 |
), ArticleFig(id=1299828249324966378, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=CN, label=表2, caption=
东雷二期抽黄灌区灌溉面积识别精度
, figureFileSmall=null, figureFileBig=null, tableContent=
类型 Types | 生产者精度 Producer accuracy/% | 用户精度 User accuracy/% |
| 灌溉 Irrigation | 91.9 | 94.2 |
| 非灌溉 Non-irrigation | 88.7 | 84.5 |
| 总体精度Overall accuracy:90.8%,Kappa系数Kappa coefficient:0.80 |
), ArticleFig(id=1299828249404658155, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=EN, label=Tab.3, caption=
Accuracy verification of irrigation area identification results
, figureFileSmall=null, figureFileBig=null, tableContent=
灌区 Irrigation district | 累积灌溉面积 Accumulated irrigated area | | 实际灌溉面积 Actual irrigated area |
统计数据 Statistical data/km2 | 遥感识别 Detection results/km2 | 误差 Error/% | | 统计数据 Statistical data/km2 | 遥感识别 Detection results/km2 | 误差 Error/% |
| 注:误差=|(遥感识别结果-统计数据)/统计数据|×100%。 |
| Note: Error = |(Remote sensing detection results - Statistical data) / Statistical data| × 100%. |
| 东雷二期 | 673.34 | 768.19 | 14.1 | | 461.21 | 512.47 | 11.1 |
| 泾惠渠 | 956.67 | 1050.70 | 9.8 | | 525.33 | 593.13 | 12.9 |
| 交口抽渭 | 606.94 | 736.72 | 21.4 | | 606.94 | 721.98 | 18.9 |
), ArticleFig(id=1299828249475961324, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=CN, label=表3, caption=
灌区尺度灌溉面积识别结果精度验证
, figureFileSmall=null, figureFileBig=null, tableContent=
灌区 Irrigation district | 累积灌溉面积 Accumulated irrigated area | | 实际灌溉面积 Actual irrigated area |
统计数据 Statistical data/km2 | 遥感识别 Detection results/km2 | 误差 Error/% | | 统计数据 Statistical data/km2 | 遥感识别 Detection results/km2 | 误差 Error/% |
| 注:误差=|(遥感识别结果-统计数据)/统计数据|×100%。 |
| Note: Error = |(Remote sensing detection results - Statistical data) / Statistical data| × 100%. |
| 东雷二期 | 673.34 | 768.19 | 14.1 | | 461.21 | 512.47 | 11.1 |
| 泾惠渠 | 956.67 | 1050.70 | 9.8 | | 525.33 | 593.13 | 12.9 |
| 交口抽渭 | 606.94 | 736.72 | 21.4 | | 606.94 | 721.98 | 18.9 |
), ArticleFig(id=1299828249555653101, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=EN, label=Tab.4, caption=
Water sources and crop planting proportions in large irrigation districts of Guanzhong Region (spring)
, figureFileSmall=null, figureFileBig=null, tableContent=
类型 Type | 灌区 Irrigation district | 水源地 Water source | 主要作物种植比例 Planting proportion/% |
| 注:表中只统计了种植比例达10%以上的作物;表中灌区及水源地编号与图5中的编号一致。 |
| Note: Only crops with a planting proportion of more than 10% are included in the table; the irrigation district and water source numbers correspond to those in Fig.5. |
自流 Gravity | 冯家山1 | 冯家山水库1 | 冬小麦68.2、猕猴桃17.6 |
| 石头河2 | 石头河水库2 | 冬小麦12.1、猕猴桃65.9 |
| 羊毛湾3 | 羊毛湾水库3 | 冬小麦61.8、苹果13.9、猕猴桃15.5 |
| 宝鸡峡4 | 宝鸡峡4a、王家崖4b、信邑沟4c、大北沟4 d、泔河4e | 冬小麦55.3、苹果18.1、 猕猴桃12.7 |
| 泾惠渠5 | 泾河5 | 冬小麦33.2、蔬菜28.7 |
| 桃曲坡6 | 桃曲坡水库6 | 冬小麦51.6 |
| 石堡川7 | 石堡川水库7 | 冬小麦41.4、苹果21.7、 樱桃11.3 |
| 洛惠渠8 | 北洛河8 | 冬小麦63.7、苹果14.2、 冬枣16.1 |
提水 Pumping | 交口抽渭9 | 渭河9 | 冬小麦33.4、葡萄35.3、 冬枣12.2 |
| 东雷抽黄10 | 黄河10 | 冬小麦24.9、苹果11.6、 樱桃19.7 |
| 东雷二期11 | 黄河11 | 冬小麦86.7 |
), ArticleFig(id=1299828249656316398, tenantId=1146029695717560320, journalId=1296125453100220459, articleId=1297211810931826818, language=CN, label=表4, caption=
关中地区大型灌区水源地信息及主要作物种植比例(春季)
, figureFileSmall=null, figureFileBig=null, tableContent=
类型 Type | 灌区 Irrigation district | 水源地 Water source | 主要作物种植比例 Planting proportion/% |
| 注:表中只统计了种植比例达10%以上的作物;表中灌区及水源地编号与图5中的编号一致。 |
| Note: Only crops with a planting proportion of more than 10% are included in the table; the irrigation district and water source numbers correspond to those in Fig.5. |
自流 Gravity | 冯家山1 | 冯家山水库1 | 冬小麦68.2、猕猴桃17.6 |
| 石头河2 | 石头河水库2 | 冬小麦12.1、猕猴桃65.9 |
| 羊毛湾3 | 羊毛湾水库3 | 冬小麦61.8、苹果13.9、猕猴桃15.5 |
| 宝鸡峡4 | 宝鸡峡4a、王家崖4b、信邑沟4c、大北沟4 d、泔河4e | 冬小麦55.3、苹果18.1、 猕猴桃12.7 |
| 泾惠渠5 | 泾河5 | 冬小麦33.2、蔬菜28.7 |
| 桃曲坡6 | 桃曲坡水库6 | 冬小麦51.6 |
| 石堡川7 | 石堡川水库7 | 冬小麦41.4、苹果21.7、 樱桃11.3 |
| 洛惠渠8 | 北洛河8 | 冬小麦63.7、苹果14.2、 冬枣16.1 |
提水 Pumping | 交口抽渭9 | 渭河9 | 冬小麦33.4、葡萄35.3、 冬枣12.2 |
| 东雷抽黄10 | 黄河10 | 冬小麦24.9、苹果11.6、 樱桃19.7 |
| 东雷二期11 | 黄河11 | 冬小麦86.7 |
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