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[1]SUN Yaopeng,ZHOU Zhongfa,ZHAO Yuluan,et al.Evolution and Distribution Pattern of Land Use and Rocky Desertification in Karst Mountainous Area[J].Research of Soil and Water Conservation,2022,29(01):311-318.

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Evolution and Distribution Pattern of Land Use and Rocky Desertification in Karst Mountainous Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 01 Page number: 311-318 Column: Public date: 2022-02-20

Title:: Evolution and Distribution Pattern of Land Use and Rocky Desertification in Karst Mountainous Area

Author(s):: SUN Yaopeng^1,3, ZHOU Zhongfa^1,2, ZHAO Yuluan^1,2, FANG Min^1,4, WU Yue^1,5; (1.School of Geography and Environment/School of Karst Science, Guizhou Normal University, Guiyang 550001, China; 2.State Engineering Technology Institute for Karst Desertification Control, Guiyang 550001, China; 3.The Third Surveying and Mapping Institute, Guiyang 550004, China; 4.Guizhou Vocational and Technical Collage of Water Resources and Hydropower, Guizhou, Qingzhen 551416, China; 5.Guizhou Natural Resources Information and Technical Center, Guiyang 550004, China)

Keywords:: karst mountain area; rocky desertification; land use; ecological restoration

CLC:: F301.24; P901

DOI:: -

Abstract:: Rocky desertification is one of the important reasons restricting regional economic, cultural and ecological development in karst mountainous areas. Human activities are the main factor on the formation of rocky desertification, and land use is the basic carrier of human activities. Exploring the response of different types of lands to rocky desertification is of great significance to the rocky desertification control and sustainable development in karst mountainous areas. Based on the three-phase data of land use and rocky desertification data, we used GIS spatial analysis technology and transfer matrix model to comprehensively analyze the land use pattern and the temporal and spatial evolution of rocky desertification landscape in southwest Guizhou in 2000, 2010, and 2020. The results show that:(1)during the study period, the main types of land use changes in southwest Guizhou were the conversion of grasslands to forest lands and cultivated lands, the conversion of cultivated lands to forest lands and grasslands, and the conversion of shrub forest lands to grasslands and cultivated lands, which accounted for 8.79%, 5.82%, 4.91%, 4.08%, 4.75%, 3.85% of the total land area of the state;(2)the grade of rocky desertification of grassland, shrubland, arable land and forest land had been significantly improved between 2000—2010, the improved areas were 2 703.7 km², 1 347.8 km², 2 219.1 km², and 2 532.8 km², respectively. From 2000 to 2010, the rocky desertification grades of grassland, shrub land, cultivated land and forest land were significantly improved, with the improvement areas of 557.14 km², 318.78 km², 819.35 km², 665.60 km², 244.48 km² respectively;(3)in the past two decades, the rocky desertification situation in southwest Guizhou had continued to recover and improve, but there was still a risk of deterioration in instability in some areas, which should be the focus of the control of rocky desertification land in the later period of southwest Guizhou. The study on the evolution of rocky desertification in the long-term sequence of southwest Guizhou and analysis on its changes under different land use conditions can provide decision-making basis for the ecological restoration and land use planning of the study area.

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Last Update: 2022-02-20