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[1]LIN Feng,WANG Lifang,WEN Qi.Dynamic Responses of Sequestration of Soil Organic Carbon to Vegetation Restoration and the Values of Carbon Sink in the Loess Plateau[J].Research of Soil and Water Conservation,2021,28(03):53-58.

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Dynamic Responses of Sequestration of Soil Organic Carbon to Vegetation Restoration and the Values of Carbon Sink in the Loess Plateau

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 03 Page number: 53-58 Column: Public date: 2021-04-20

Title:: Dynamic Responses of Sequestration of Soil Organic Carbon to Vegetation Restoration and the Values of Carbon Sink in the Loess Plateau

Author(s):: LIN Feng¹, WANG Lifang², WEN Qi³; (1.Agriculture and Rural Bureau, Pingyi County, Shandong 273300, China;2.Baiyan Rural Economic Management Station, Pingyi County, Shandong 273300, China;3.College of Resources and Environmental Science, Ningxia University, Yinchuan 750021, China)

Keywords:: soil organic carbon; ecological restoration; synthesis analysis; carbon sink value; Loess Plateau; ecological compensation

CLC:: S718.5

DOI:: -

Abstract:: Quantifying the responses of soil organic carbon(SOC)sequestration in Loess Plateau to vegetation restoration and the carbon sink value conversion can provide a theoretical basis for‘Grain for Green' project, carbon sink trade, and ecological compensation. Based on the literatures related to the changes of SOC in the Loess Plateau, the synthesis analysis was used to analyze the dynamic response of SOC sequestration to different vegetation types, tree species, restoration stages, slopes, and aspects, and the economic value theory was used to monetize the carbon sink value. Compared with cropland,‘Grain for Green' increased SOC sequestration by 61.60%, and SOC sequestration resulting from conversions of croplands to forest, shrub and grassland increased by 88.20%, 55.15% and 43.18%, respectively, among which SOC sequestration of evergreen trees was better than that of the deciduous trees, SOC sequestration of sea buckthorn was better than Caragana, and SOC sequestration of natural grassland was better than artificial grassland. The SOC sequestration of the three vegetation types(forest,shrub,and grassland)varied in different restoration stages from 38.87%～154.80%,21.59%～98.07%,and 32.80%～85.65%, respectively, and SOC sequestration was the best in the later restoration stage. Climatic condition,slope,and aspect had the significant effects on SOC sequestration. Planting trees and shrubs should be carried out in areas with high rainfall, and grassland restoration should be adopted in areas with low rainfall. Moreover, vegetation restoration on shady slopes and steep slopes can effectively increase SOC. Based on the current values of SOC sequestration and the potential of future SOC sequestration, the total SOC sequestration values of 0—20 cm and 0—100 cm soil layers in the Loess Plateau are 3.6×10⁶ yuan and 9.09×10⁶ yuan per year, respectively.‘Green for Grain' had profoundly changed the SOC sequestration in the Loess Plateau. In the process of vegetation management, more attention should be paid to the effects of vegetation types, tree species, restoration stages, climate, and topography factors. In addition, SOC sequestration benefits should be taken into account in carbon trade and ecological compensation.

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Last Update: 2021-04-20