基于Landsat 8的库布齐沙漠2000—2023年沙漠化动态变化分析

姜志伟; 杨智博; 杨清; 左合君; 王召明; 王君芳; 田磊

doi:10.13961/j.cnki.stbctb.2024.06.013

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基于Landsat 8的库布齐沙漠2000—2023年沙漠化动态变化分析

试验研究

- 基于Landsat 8的库布齐沙漠2000—2023年沙漠化动态变化分析
- Analysis on Dynamic Change of Desertification in Kubuqi Desert During 2000—2023 Based on Landsat 8
- 水土保持通报 2024年44卷第6期页码：118-128
- 作者机构：
  
  1. 内蒙古农业大学沙漠治理学院,内蒙古,呼和浩特,010018
  2. 内蒙古农业大学内蒙古风沙物理与防沙治沙工程重点实验室,内蒙古,呼和浩特,010018
  3. 内蒙古农业大学内蒙古杭锦荒漠生态系统国家定位观测研究站,内蒙古,呼和浩特,010018
  4. 乌海市公用事业发展中心,内蒙古,乌海,016000
  5. 蒙草生态环境股份(集团)有限公司,内蒙古,呼和浩特,010030
- 作者简介：
- 基金信息：
  
  国家自然科学基金地区科学基金项目(42161054);内蒙古自治区科技计划项目(2021GG0081);荒漠化防治与沙区资源保护利用创新团队-BR241301;沙漠沙地生态保护与治理技术创新团队-NMGIRT2408
- DOI：10.13961/j.cnki.stbctb.2024.06.013
  中图分类号： P237;X171.4
- 纸质出版：2024
- 稿件说明：
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姜志伟, 杨智博, 杨清, 等. 基于Landsat 8的库布齐沙漠2000—2023年沙漠化动态变化分析[J]. 水土保持通报, 2024,44(6):118-128.

Jiang Zhiwei, Yang Zhibo, Yang Qing, et al. Analysis on Dynamic Change of Desertification in Kubuqi Desert During 2000—2023 Based on Landsat 8[J]. Bulletin of Soiland Water Conservation, 2024, 44(6): 118-128.
姜志伟, 杨智博, 杨清, 等. 基于Landsat 8的库布齐沙漠2000—2023年沙漠化动态变化分析[J]. 水土保持通报, 2024,44(6):118-128. DOI： 10.13961/j.cnki.stbctb.2024.06.013.

Jiang Zhiwei, Yang Zhibo, Yang Qing, et al. Analysis on Dynamic Change of Desertification in Kubuqi Desert During 2000—2023 Based on Landsat 8[J]. Bulletin of Soiland Water Conservation, 2024, 44(6): 118-128. DOI： 10.13961/j.cnki.stbctb.2024.06.013.

摘要

[目的

]

探究库布齐沙漠2000—2023年沙漠化时空动态变化规律，旨在为库布齐沙漠植被恢复及生态建设提供理论参考和基础数据支持。[方法

]

基于Landsat遥感影像特征，采用EVI遥感指数灰度分割，土地沙漠化程度分级、土地利用动态度、多度指数和重要度指数，研究了库布齐沙漠及其周边地区2000—2023年土地沙漠化的时空分布和变化趋势。[结果

]

库布齐沙漠的沙漠化总面积从2000年的10 694.6 km

下降到2023年8 837.56 km

。极重度沙漠化面积已由当初的6 272.11 km

，缩减为1 461.15 km

，重度沙漠化面积由2000年的1 773.97 km

，上升到2 874.48 km

，中度沙漠化面积由2000年的1 372.16 km

上升到1 965.84 km

，轻度沙漠化的土地面积由1 276.35 km

上升到2 535.58 km

。从时间序列角度分析来看，2000—2023年间极重度沙漠缩减速率为3.33%，重度沙漠化增加速率为2.70%，中度沙漠化增加速率为1.88%，轻度沙漠化缩减速率为4.29%。极重度沙漠土地类型面积从2000年的6 272.11 km

下降到2023年的1 461.65 km

，合计流失面积为4 949.72 km

。从空间角度分析，极重度沙漠类型随时间变化由分布分散变为分布集中，在2000—2010年内在沙漠中占据主导地位；重度和中度沙漠化类型的多度指数处于7.69%~16.15%之间，说明重、中度沙漠化类型长期分布较为集中；轻度沙漠化类型随时间变化分散且较为广泛。[结论

]

2000—2023年库布齐沙漠面积总体呈减少趋势，生态环境有所改善，未来该区域生态修复重点关注极重度沙漠区域。

Abstract

[Objective] The temporal and spatial dynamic changes of desertification in the Kubuqi Desert during 2000—2023 were investigated

aiming to provide theoretical references and basic data support for the restoration of vegetation and ecological construction. [Methods] Based on the features of Landsat remote sensing images

the spatial and temporal distribution and change trend of land desertification in the Kubuqi Desert and its surrounding areas from 2000 to 2023 were studied by using enhanced vegitation index (EVI) remote sensing index gray segmentation

land desertification degree classification

land use dynamic attitude

abundance index and importance index. [Results] The total desertification area in the Kubuqi Desert decreased from 10 694.6 km2 in 2000 to 8 837.56 km2 in 2023. The area of extreme desertification was reduced from 6 272.11 km2 to 1 461.15 km2

that of severe desertification increased from 1 773.97 km2 in 2000 to 2 874.48 km2

of moderate desertification increased from 1 372.16 km2 in 2000 to 1 965.84 km2

and of mild desertification increased from 1 276.35 km2 to 2 535.58 km2. Considering the perspective of time series

the rate of extremely severe desertification from 2000 to 2023 was 3.33%

that of severe desertification was 2.70%

of moderate desertification was 1.88%

and of mild desertification was 4.29%. The area of extremely severe desert land types decreased from 6 272.11 km2 in 2000 to 1 461.65 km2 in 2023

with a total loss area of 4 949.72 km2. From the spatial perspective

the distribution of extremely severe desert types changed from distributed over time to concentrated

becoming dominant from 2000 to 2010; the multiple-degree index of severe and moderate desertification types ranged between 7.69% and 16.15%

indicating that the long-term distribution of heavy and moderate desertification types was concentrated; mild desertification types were scattered and extensive over time. [Conclusion] From 2000 to 2023

the area of Kubuqi Desert showed a decreasing trend

and the ecological environment had been improved. In the future

the ecological restoration of this region will focus on the extremely severe desert area.

关键词

Keywords

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