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Estimation of net primary productivity and correlation study with climate parameters in Jiangxi Province using the enhanced CASA model
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Tie-ding LU1, 2, Yuan ZHANG1, *, Si-ting ZENG1, Rui TAO3, Yue TENG4
China Environmental Science | 2025, 45(1) : 369 - 378
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China Environmental Science | 2025, 45(1): 369-378
• Environmental Ecology •
Estimation of net primary productivity and correlation study with climate parameters in Jiangxi Province using the enhanced CASA model
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Tie-ding LU1, 2, Yuan ZHANG1, *, Si-ting ZENG1, Rui TAO3, Yue TENG4
Affiliations
  • 1.School of Surveying and Geoinformation Engineering, East China University of Technology, Nanchang 330013, China
  • 2.Key Laboratory of Mine Environmental Monitoring and Improving around Poyang Lake of Ministry of Natural Resources, East China University of Technology, Nanchang 330013, China
  • 3.Jiangxi Communications Design and Research Instituteco., Ltd, Nanchang 330000, China
  • 4.Jiangxi Provincial Natural Resources Surveying and Monitoring Institute, Nanchang 330002, China
Published: 2025-01-20
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This research increases the accuracy of Net Primary Productivity (NPP) estimation in the CASA (Carnegie-Ames-Stanford Approach) model by refining the calculation methods for solar radiation parameters and water stress coefficients. Based on the improvement, correlation and trend analysis of NPP and meteorological variables were carried out.Following model optimization, the correlation between NPP and field observation data improved to 0.62. From 2001 to 2022, the annual average NPP in Jiangxi Province increased steadily, with the average value exceeding 1000gC/(m2⋅a). The monthly NPP values were in the following seasonal order: autumn > summer > winter > spring, with July having the highest value. The highest and lowest annual NPP values were observed in 2018 and 2010, respectively. Trend analysis and correlation facts show that, despite a decline in solar radiation from 2001 to 2022, NPP changes were not considerably impacted. A least-squares regression model revealed that NPP increased with rising temperature and decreased with decreasing sun radiation. Despite recent increases in extreme events (2019~2022), there has been no notable decrease in NPP levels.

CASA model  /  net primary productivity  /  solar radiation  /  climate change  /  Jiangxi Province
Tie-ding LU, Yuan ZHANG, Si-ting ZENG, Rui TAO, Yue TENG. Estimation of net primary productivity and correlation study with climate parameters in Jiangxi Province using the enhanced CASA model[J]. China Environmental Science, 2025 , 45 (1) : 369 -378 .
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Article Info
  • Receive Date：2024-06-12
  • Online Date：2026-03-18
  • Published：2025-01-20
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  • Received：2024-06-12
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Affiliations
    1.School of Surveying and Geoinformation Engineering, East China University of Technology, Nanchang 330013, China
    2.Key Laboratory of Mine Environmental Monitoring and Improving around Poyang Lake of Ministry of Natural Resources, East China University of Technology, Nanchang 330013, China
    3.Jiangxi Communications Design and Research Instituteco., Ltd, Nanchang 330000, China
    4.Jiangxi Provincial Natural Resources Surveying and Monitoring Institute, Nanchang 330002, 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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