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中国沙漠 ›› 2023, Vol. 43 ›› Issue (4): 31-40.DOI: 10.7522/j.issn.1000-694X.2022.00166

• • 上一篇    下一篇

20002020年宁夏河东沙区沙漠化演变

王耀宗1,2(), 岳新斌1, 谢家丽3,4(), 刘志鹏1, 马媛1, 王亚晖3,4, 宫燕1   

  1. 1.宁夏回族自治区生态环境监测中心,宁夏 银川 750002
    2.宁夏回族自治区生态环境信息与应急中心,宁夏 银川 750001
    3.中国科学院西北生态环境资源研究院,甘肃 兰州 730000
    4.中国科学院大学,北京 100049
  • 收稿日期:2022-11-08 修回日期:2022-12-12 出版日期:2023-07-20 发布日期:2023-08-14
  • 通讯作者: 谢家丽
  • 作者简介:谢家丽(E-mail: xiejl@lzb.ac.cn
    王耀宗(1985—),男,河南郑州人,高级工程师,主要从事生态遥感监测与地理信息系统研究。E-mail: wangyaozong414@163.com
  • 基金资助:
    2015—2020年宁夏生态状况变化遥感调查评估项目

Desertification evolution in the sandy region to the east of the Yellow River in Ningxia from 2000 to 2020

Yaozong Wang1,2(), Xinbin Yue1, Jiali Xie3,4(), Zhipeng Liu1, Yuan Ma1, Yahui Wang3,4, Yan Gong1   

  1. 1.Ecological Environment Monitoring Center of Ningxia,Yinchuan 750002,China
    2.Ecological Environment Information and Emergency Center of Ningxia,Yinchuan 750001,China
    3.Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    4.University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2022-11-08 Revised:2022-12-12 Online:2023-07-20 Published:2023-08-14
  • Contact: Jiali Xie

摘要:

宁夏河东沙区是中国北方农牧交错区具有过渡性地域特征的沙区,认识当地土地沙漠化发展的规律,有助于协调区域人地关系和指导生态建设工程实施。利用Landsat数据提取宁夏河东沙区2000、2005、2010、2015、2020年5期沙漠化土地信息,结合重心迁移模型分析其时空变化特征,并采用多元回归残差分析方法将气候变化和人类活动对区域沙漠化演变的影响进行剥离和重新组合。结果表明:2000—2020年,宁夏河东沙区沙漠化总体面积减少,沙漠化程度减轻,沙漠化呈逆转的趋势,区域北部沙漠化程度比南部严重;各类沙漠化土地的重心整体北移,南部沙漠化逆转程度比北部显著;区域沙漠化逆转主要受气候变化和人类活动综合影响。

关键词: 宁夏河东沙区, 沙漠化, 重心迁移, 人类活动, 气候变化

Abstract:

The sandy region to the east of the Yellow River in Ningxia is a transitional region in the agro-pastoral ecumenical zone in northern China. Understanding the law of the development of desertification in this region is helpful to coordinate the local man-land relationship and guide the implementation of ecological construction project. The Landsat data were used to extract the information of desertification land for five periods of 2000, 2005, 2010, 2015 and 2020 in the sandy region to the east of the Yellow River in Ningxia, then the temporal and spatial characteristics of desertification land were analyzed by combining the barycenter transfer model, and the effects of climate change and human activities on regional desertification evolution were stripped and recombined by multiple regression residual analysis method. The results show that the overall area of desertification land in the sandy region to the east of the Yellow River in Ningxia decreased, the degree of desertification was reduced, and the desertification was reversed from 2000 to 2020. The degree of desertification in the northern part of the region was more serious than that in the southern part. The barycenter of all kinds of desertification land moved northward, and the degree of desertification reversal was more significant in the south than in the north. Regional desertification reversal is mainly influenced by climate change and human activities.

Key words: sandy region to the east of the Yellow River in Ningxia, desertification, barycenter transfer, human activities, climate change

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