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中国沙漠 ›› 2023, Vol. 43 ›› Issue (3): 188-198.DOI: 10.7522/j.issn.1000-694X.2022.00123

• • 上一篇    

祁连山甘肃片区土地利用变化特征及驱动力

郭瑞1,3(), 刘蔚1,2, 李宗省1, 王娅2, 陈勇4, 周立华1,2,5()   

  1. 1.中国科学院西北生态环境资源研究院,内陆河流域生态水文重点实验室,甘肃 兰州 730000
    2.中国科学院西北生态环境资源研究院,沙漠与沙漠化重点实验室,甘肃 兰州 730000
    3.中国科学院大学,北京 100049
    4.浙江科技学院,浙江 杭州 310023
    5.中国科学院科技战略咨询研究院,北京 100190
  • 收稿日期:2022-06-14 修回日期:2022-08-26 出版日期:2023-05-20 发布日期:2023-05-31
  • 通讯作者: 周立华
  • 作者简介:周立华(E-mail: lhzhou@casisd.cn
    郭瑞(1982—),女,山西临汾人,博士研究生,研究方向为生态系统服务。E-mail: guorui@lzb.ac.cn
  • 基金资助:
    第二次青藏高原综合科学考察项目(2019QZKK0404);中国科学院战略性先导科技专项(XDA20020401);甘肃省林业和草原科技创新计划项目(GYCX[2020]01);甘肃省重点研发计划项目(20YF8FA002)

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

摘要:

基于1990—2018年4期Landsat卫星30 m分辨率土地利用数据,结合土地利用变化分析法及统计学方法,对祁连山甘肃片区近30年土地利用时空分布特征进行了分析研究,探讨了自然因素和人类活动对研究区土地利用变化的作用机制。结果表明:(1)祁连山甘肃片区土地利用类型以未利用土地和草地为主;1990—2018年研究区水域和未利用土地面积为减少趋势,其他土地利用类型面积呈动态增加趋势。(2)2000年后,参与土地转移的面积增加,以未利用土地—草地、未利用土地—林地、耕地—草地这3种转化关系为主。(3)自然因素是祁连山甘肃片区土地利用变化的主导因素,以“三北”防护林工程、“天保”工程和退耕还林还草为主的生态工程在限制了人类农牧业生产活动的同时,给祁连山甘肃片区土地利用变化带来明显的局地效应。

关键词: 土地利用, 动态变化, 转移矩阵, 生态工程, 驱动力

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

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