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[1]MA Qi,LI Ting,HE Chengmin.Zoning the Sensitivity Red-line of Soil Erosion Based on an Early-warning System of Ecological Carrying Capacity[J].Research of Soil and Water Conservation,2022,29(05):93-99.

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Zoning the Sensitivity Red-line of Soil Erosion Based on an Early-warning System of Ecological Carrying Capacity

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 05 Page number: 93-99 Column: Public date: 2022-08-20

Title:: Zoning the Sensitivity Red-line of Soil Erosion Based on an Early-warning System of Ecological Carrying Capacity

Author(s):: MA Qi¹, LI Ting², HE Chengmin³; (1.School of Tourism & Research Institute of Human Geography, Xi'an International Studies University, Xi'an 710128, China; 2.College of Geomatics, Xi'an University of Science and Technology, Xi'an 710054, China; 3.Hydrology and Water Resources Investigation Center of Shaanxi Province, Xi'an 710068, China)

Keywords:: ecological carrying capacity; soil erosion; sensitive; ecological red-line; Shaanxi Province

CLC:: S157.1

DOI:: -

Abstract:: Sensitivity redline of soil erosion is one of the key components of Ecological Red Line(ERL). At present, an overgeneralization as well as simplification of threshold method is a very common in research of zoning the sensitivity redline of soil erosion, which is lack of the consideration of ecological carrying capacity. Therefore, taking Shaanxi Province as an example, we comprehensively divided the sensitive red-line of soil and water loss on provincial scale based on the regional ecological carrying capacity. The results show that:(1)soil erosion in Shaanxi Province as a whole is gradually intensifying from north to south; most areas are characterized by early-warning and critical early-warning for their ecological carrying capacity, but the total area of the early-warning zone is 105 108.83 km², accounting for 51.13% of the land area of this province;(2)the total area of the ERL of soil and water loss in Shaanxi Province is 19 641.66 km², which mainly consists of grassland and farmland, accounting for 9.67% of the land area of this province; they are clustered together in the Qinba mountains of southeast Shaanxi and the Weibei rainfed tableland of the Loess Plateau;(3)the technical framework of the demarcation of sensitive red-line of soil and water loss based on ecological carrying capacity of early-warning can be conducive to the reasonability and accuracy of the ERL; this criterion can be applied to the demarcation of the ERL based on the identification of ecological importance and sensitivity in different natural areas. This research can provide a scientific reference for the demarcation of the ERL, and for the optimization and connection of various divisions and planning boundaries.

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Last Update: 2022-08-20