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[1]YUAN Jie,CAO Guangchao,ECHONG Yi,et al.Difference and Influencing Factors of Soil Carbon and Nitrogen Contents Under Natural Growth and Human Influence[J].Research of Soil and Water Conservation,2023,30(03):163-172,187.[doi:10.13869/j.cnki.rswc.2023.03.030]

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Difference and Influencing Factors of Soil Carbon and Nitrogen Contents Under Natural Growth and Human Influence

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 30 Number of periods: 2023 03 Page number: 163-172,187 Column: Public date: 2023-04-10

Title:: Difference and Influencing Factors of Soil Carbon and Nitrogen Contents Under Natural Growth and Human Influence

Author(s):: YUAN Jie^1,2,3, CAO Guangchao^1,2,3, ECHONG Yi^1,2,3, DIAO Erlong^1,2, ZHAO Meiliang^1,2, YAN Xin^1,2; (1.Key Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation, ministry of Education, Qinghai Normal University, Xining 810008, China; 2.Qinghai Province Key Laboratory of Physical Geography and Environmental Process, College of Geographical Science, Qinghai Normal University, Xining 810008, China; 3.Academy of Plateau Science and Sustainability, Xining 810008, China)

Keywords:: north of Qinghai Lake; soil carbon and nitrogen; differences; influencing factors; dominant factors

CLC:: S157; K903

DOI:: 10.13869/j.cnki.rswc.2023.03.030

Abstract:: [Objective]The factors influencing the soil carbon and nitrogen content of unchanged grazed grassland and cultivated land in the Qinghai Lake area for the past 30 years were thoroughly investigated, with a view to providing reference for optimal land use management in the area. [Methods] Further analysis of the dominant factors of soil carbon and nitrogen contents was carried out by using univariate and multiple regression models. [Results] The soil physicochemical indexes of grassland and cultivated land changed obviously with 30 cm soil depth as the boundary. It can be seen from the regression model that soil carbon and nitrogen contents in cultivated land are less affected by soil physical and chemical indexes due to the influence of human activities, while grassland soil, as an undisturbed soil, has significantly more dominant factors on soil carbon and nitrogen than those of the cultivated land under the natural development background. [Conclusion] Land use change significantly affects soil properties, and reducing land disturbance in the area can effectively slow down the process of land desertification.

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Last Update: 2023-04-10