首页|Impact of the Grain-for-Green Programme and climate change on the soil erosion decline in the Yangtze River,China

Impact of the Grain-for-Green Programme and climate change on the soil erosion decline in the Yangtze River,China

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The area of land that is affected by soil erosion in the Yangtze River has been re-duced by 146,000 km2(accounting for 27％of the entire Yangtze River)since 2000.However,the contributions of different tributaries to this soil erosion decline and the underlying causes have not been determined.Here we quantify the soil erosion decline in the Yangtze River and the impacts of the Grain-for-Green Programme(GFGP)and climate change using the RUSLE model and statistical methods.The results were as follows:(1)After the implementation of the GFGP,soil erosion decreased in ten sub-basins excluding the Dongting Lake catchment;(2)Soil erosion was mainly affected by the GFGP and the rainfall erosivity.Specifically,the con-tributions of the GFGP and rainfall erosivity to soil erosion decline are estimated to be 70.12％and 29.88％,respectively.(3)"Scenario #9"means the combination of slope(15°-25°)of retired farmland converted to shrub land and slope(＞25°)of retired farmland converted to grassland.Considering scenario feasibility and management targets,Scenario #9 was the most appropriate land use scenario for the Yangtze River.This study offers insights into managing and reducing soil erosion in the future.

soil erosionRUSLE modelGrain for Green Programmeclimate changeYangtze River

LI Boyan、WANG Yunchen

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School of Geography and Tourism,Shaanxi Normal University,Xi'an 710119,China

School of Computer Science and Technology,Xi'an University of Posts and Telecommunications,Xi'an 710121,China

国家自然科学基金国家自然科学基金国家自然科学基金Qin Chuangyuan Cites High-level Innovation or Entrepreneurship Talent ProjectFifth Batch Special Funding(Pre-Station)from China Postdoctoral Science Foundation中央高校基本科研业务费专项中央高校基本科研业务费专项中央高校基本科研业务费专项Teaching Reform Project of Shaanxi University

421012594237110142301455QCYRCXM-2023-0662023TQ0207GK2023040241110011297111201035523GGYS-JG06

2024

10.1007/s11442-024-2216-0

地理学报(英文版)
中国地理学会,中国科学院地理科学与资源研究所

地理学报(英文版)

CSTPCD
影响因子：1.307
ISSN：1009-637X
年,卷(期)：2024.34(3)
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