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Evolution Characteristics of Extreme Dry Events in China's Main Grain Production Areas Based on Analysis of Agricultural Drought Conditions
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Jin HUANG, Yi-bo LIU, Fang-min ZHANG
Water Resources and Power | 2023, 41(10) : 10 - 13
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Water Resources and Power | 2023, 41(10): 10-13
• HYDROLOGY, WATER RESOURCES AND ENVIRONMENT •
Evolution Characteristics of Extreme Dry Events in China's Main Grain Production Areas Based on Analysis of Agricultural Drought Conditions
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Jin HUANG, Yi-bo LIU, Fang-min ZHANG
Affiliations
  • School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
Published: 2023-10-25 doi: 10.20040/j.cnki.1000-7709.2023.20230399
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Based on the agricultural drought-affected rate of 13 major grain producing provinces in China from 1980 to 2019 and the daily rainfall data, the climate-caucusing loss intensity (CCLI) were extracted using H-P filtering, and its responses to dry-days indices (DDI) and large-scale atmospheric-ocean indices (LAOI) were explored. The correlation analysis between CCLI of each province and DDI in different months indicated that summer drought had the higher contribution to the disaster situation, especially the total number of dry days in July was identified as the primary drought-causing factors (PDCF) in 10 provinces. The PDCF in Henan, Jiangsu, Hubei, Inner Mongolia, Jilin, and Liaoning all showed a significant strengthening trends, indicating the intensification of drought risk in the key month of summer; The fluctuation of PDCF in each province had a main cycle of 2-3 years; At the time-lag of 0-12 months, circulation signals such as North Atlantic Oscillation, Pacific Warm Pool, and Arctic Oscillation had the significant impacts on the drought situation. This study can provide scientific basis for regional drought monitoring and early warning.

agricultural drought-affected rate  /  H-P filtering  /  dry-days indices  /  large-scale atmospheric-ocean indices
Jin HUANG, Yi-bo LIU, Fang-min ZHANG. Evolution Characteristics of Extreme Dry Events in China's Main Grain Production Areas Based on Analysis of Agricultural Drought Conditions[J]. Water Resources and Power, 2023 , 41 (10) : 10 -13 . DOI: 10.20040/j.cnki.1000-7709.2023.20230399
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20230399
  • Receive Date：2023-03-17
  • Online Date：2026-01-28
  • Published：2023-10-25
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  • Received：2023-03-17
  • Revised：2023-06-11
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    School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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