Change of Vegetation Coverage in the Loess Plateau from 2000 to 2020 and Its Spatiotemporal Pattern Analysis

WANG Yinan; KONG Xiangbing; ZHAO Chunjing; YAO Guiqi; GUO Kai

doi:10.13870/j.cnki.stbcxb.2022.03.019

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Change of Vegetation Coverage in the Loess Plateau from 2000 to 2020 and Its Spatiotemporal Pattern Analysis

更新时间：2026-04-09

- Change of Vegetation Coverage in the Loess Plateau from 2000 to 2020 and Its Spatiotemporal Pattern Analysis
- Vol. 36, Issue 3, Pages: 130-137(2022)
- 作者机构：
  
  1. 黄河水利科学研究院, 水利部黄土高原水土保持重点实验室,郑州,450003
  2. 河南省水土保持监测总站,郑州,450008
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2022.03.019
  CLC： P237
- Online First：27 May 2022，
  
  Published：2022
- 稿件说明：
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WANG Yinan, KONG Xiangbing, ZHAO Chunjing, et al. Change of Vegetation Coverage in the Loess Plateau from 2000 to 2020 and Its Spatiotemporal Pattern Analysis[J]. 2022, 36(3): 130-137.
DOI：

WANG Yinan, KONG Xiangbing, ZHAO Chunjing, et al. Change of Vegetation Coverage in the Loess Plateau from 2000 to 2020 and Its Spatiotemporal Pattern Analysis[J]. 2022, 36(3): 130-137. DOI： 10.13870/j.cnki.stbcxb.2022.03.019.

摘要

以2000—2020年MODIS-NDVI植被指数为数据源

反演计算黄土高原植被覆盖度

通过转移矩阵和重心迁移等方法分析黄土高原植被覆盖度时空格局变化及其与降水、气温、坡度和土壤类型等因素的关系。结果表明:(1)2000—2020年黄土高原植被覆盖度由0.39提高到0.61

整体呈上升趋势

2017年后实现快速提升;(2)近20年

黄土高原植被覆盖度显著好转类型与极显著好转类型改善面积比例达到37.93%

2009年前以低覆盖和中低覆盖植被为主

2010年后以中覆盖及更高等级覆盖植被为主

2019年以后中高覆盖植被所占比例最高;(3)从2000年到2020年

黄土高原低覆盖、中低覆盖、中覆盖和中高覆盖植被向更高等级覆盖植被转化比例分别为93.10%

96.57%

82.99%

43.34%

中低覆盖、中覆盖、中高覆盖和高覆盖植被向更低等级覆盖植被转化比例分别为0.30%

2.21%

7.83%

12.47%;(4)近20年黄土高原植被覆盖度变化与气温和降水的变化表现敏感

斜坡地和陡坡地植被覆盖度较高

淋溶土类型下的植被覆盖度较高

国家政策和措施实施等人为因素对植被覆盖度改善发挥重要作用。

Abstract

This research calculated vegetation coverage on the Loess Plateau from 2000 to 2020 by using the MODIS-NDVI vegetation index

analyzed its relationship with rainfall

temperature

slope and soil by using the transfer matrix and other methods. The results showed that:(1) The vegetation coverage increased from 0.39 to 0.61

and increased rapidly after 2017. (2) The area ratio of significantly improved and extremely significantly improved reached 37.93%. The coverage was dominated by low and middle-low before 2009

and dominated by medium and higher coverage after 2010. The proportion of middle-high coverage was the highest after 2019. (3) The conversion ratios of low

medium-low

medium and medium-high cover to the higher cover were 93.10%

96.57%

82.99%

43.34% respectively. The conversion ratios of medium-low

medium

medium-high and high cover to the lower cover were 0.30%

2.21%

7.83%

12.47% respectively. (4) The changes of vegetation coverage were sensitive to the changes of temperature and rainfall. The vegetation coverages of slope

steep slope and leached soil were higher. Human interventions

such as policies and soil conservation measures

played an important role in vegetation coverage improvement.

关键词

Keywords

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