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[1]SUN Yinglong,LI Na,HUANG Binbin,et al.Analysis of Temporal and Spatial Changes and Influencing Factors of Soil Conservation in the Loess Plateau from 2000 to 2019[J].Research of Soil and Water Conservation,2022,29(06):290-297.

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Analysis of Temporal and Spatial Changes and Influencing Factors of Soil Conservation in the Loess Plateau from 2000 to 2019

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 06 Page number: 290-297 Column: Public date: 2022-10-20

Title:: Analysis of Temporal and Spatial Changes and Influencing Factors of Soil Conservation in the Loess Plateau from 2000 to 2019

Author(s):: SUN Yinglong¹, LI Na², HUANG Binbin³, ZHAO Xiaofeng¹, YAN Hao¹, CAO Yun¹; (1.National Meteorological Center, Beijing 100081, China; 2.Liaoning Academy of Agricultural Sciences, Shenyang, Liaoning 110161, China; 3.Research Center for Ecological Environment, Chinese Academy of Sciences, Beijing 100083, China)

Keywords:: Loess Plateau; soil conservation; vegetation coverage; NPP; meteorological conditions

CLC:: S157.1

DOI:: -

Abstract:: In order to reveal for revealing the ecological effects of the Loess Plateau under the background of global climate change, soil conservation was used as the evaluation indicator, and the United States modified general soil loss equation was used to evaluate the soil retention function of the Loess Plateau and the effect of vegetation and weather factors in the past 20 years. This study has important scientific value and practical significance The results showed that the average amount of soil retention in the Loess Plateau during 2000—2019 was 109.5 t/hm²; soil retention increased at a rate of 2.0 t/ hm² per year since 2000; the soil retention in the central and eastern parts of the Loess Plateau had increased significantly; the vegetation NPP in the Loess Plateau had increased at a rate of about 7.2 gC/m² since 2000, with an annual average of 330.5 gC/m²; the annual average of vegetation coverage in the Loess Plateau was 29.2% during the year 2000—2019, and the annual average rate is 29.2% with 0.52% increases per year. The clear trend of ‘warm and humidification' in the Loess Plateau had shown since 2000, and both temperature and precipitation had increased significantly. The average annual precipitation had been 469.1 mm, with increased trend of 3.1 mm per year, an average annual temperature of 10.2℃ with an increased trend of 0.03℃ since 2000. The ecological recovery measures have enhanced in the Loess Plateau, and the better climate conditions have resulted from the effect of ecological construction, which is the main factor of ecological restoration.

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Last Update: 2022-10-20