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Journal of Desert Research ›› 2023, Vol. 43 ›› Issue (3): 188-198.DOI: 10.7522/j.issn.1000-694X.2022.00123

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An analysis on the land use change characteristics and driving forces in Gansu part of the Qilian Mountain

Rui Guo1,3(), Wei Liu1,2, Zongxing Li1, Ya Wang2, Yong Chen4, Lihua Zhou1,2,5()   

  1. 1.Key Laboratory of Ecohydrology of Inland River Basin /, Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    2.Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    3.University of Chinese Academy of Sciences,Beijing 100049,China
    4.Zhejiang University of Science and Technology,Hangzhou 310023,China
    5.Institutes of Science and Development,Chinese Academy of Sciences,Beijing 100190,China
  • Received:2022-06-14 Revised:2022-08-26 Online:2023-05-20 Published:2023-05-31
  • Contact: Lihua Zhou

Abstract:

Based on Landsat 30m land use data from 1990 to 2018, combined with the land use change analysis and statistics method, the spatial and temporal distribution characteristics of land use at the Gansu part of the Qilian Mountain in recent 30 years were studied and the function mechanism of natural factors and human activities on the land use change in the area was explored. The results show that: (1) The land use types in Gansu part of the Qilian Mountain were mainly unused land and grassland; from 1990 to 2018, except the water and unused land areas which showed decreasing trends, the areas of other types showed a dynamic increasing trend. (2) After 2000, the areas and types of the land participating related transfer were increasing, mainly between unused land-grassland, unused land-woodland and cultivated land-grassland. (3) Natural factors were the leading reasons for the land use changes in Gansu part of the Qilian Mountain. The ecological projects Three- north Shelterbelt Project and Natural Forest Protection Project which focused on returning farmland to forest and grassland, returning grazing land to grassland, restricted human agricultural and animal husbandry production activities, and also brought obvious local effects on the land use change in Gansu part of the Qilian Mountain.

Key words: Land use, dynamic change, transfer matrix, ecological engineering, driving force

CLC Number: