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[1]MAO Shenglin,SHANGGUAN Zhouping.Characteristics and Causes of Land Use/Vegetation Coverage of the Loess Plateau in the Past 20 Years[J].Research of Soil and Water Conservation,2022,29(05):213-219.

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Characteristics and Causes of Land Use/Vegetation Coverage of the Loess Plateau in the Past 20 Years

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 05 Page number: 213-219 Column: Public date: 2022-08-20

Title:: Characteristics and Causes of Land Use/Vegetation Coverage of the Loess Plateau in the Past 20 Years

Author(s):: MAO Shenglin, SHANGGUAN Zhouping; (State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China)

Keywords:: land use; cover change; driving force; transition matrix; Loess Plateau

CLC:: F301.2; Q948

DOI:: -

Abstract:: In the past 20 years, the land utilization structure of the Loess Plateau has undergone significant changes, and the ecological environment has achieved remarkable results. Revealing the characteristics and causes of land utilization/vegetation coverage on the Loess Plateau are the key link to promote the optimization of the spatial pattern of regional land use. We used GIS technology to transfer matrix of remote sensing data in 2000, 2010 and 2017, systematically studied the land change/characteristics of vegetation coverage in Loess Plateau region, provinces and ecological zones and qualitatively analyzed the main driving force of land use changes. The results showed that:(1)the land use types in Loess Plateau were mainly cultivated land, woodland and grassland; between 2000 and 2017, farmland, grassland and water decreased by 19 860 km², 42 410 km², 5 630 km², while woodland, construction land and unused land area increased by 30 650 km², 9 840 km², 27 410 km², respectively; grassland was the main transfer-in or transfer-out category;(2)the main land types in the seven provinces of the Loess Plateau are basically consistent with the rules of regional changes; the grassland degradation was serious in different periods between Gansu and Ningxia, specifically 7 830 km² grassland was transferred to unused land in Gansu Province from 2000 to 2010, and 8 900 km² grassland to unused land in Ningxia from 2010 to 2017;(3)the water areas of each ecological area in Gaoyuan gully area, hilly gully area, wind sand area and earth-rock mountain area and valley plain area had been continuously reduced, and mainly transferred into cultivated land, while the land use in ecological area mainly occurred the dynamic transfer of cultivated land and grassland;(4)social factors were the main driving force for the change of land use/vegetation coverage on the Loess Plateau, among which the implementation of national policies had played a main role in pushing and promoting, while the impact of human activities was relatively small. The results of this research can provide scientific support for the land use planning of the Loess Plateau and serve the ecological protection and high-quality development of the Loess Plateau.

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Last Update: 2022-08-20