img

官方微信

高级检索

中国沙漠 ›› 2023, Vol. 43 ›› Issue (3): 86-95.DOI: 10.7522/j.issn.1000-694X.2022.00144

• • 上一篇    下一篇

20002020年汾河流域植被覆盖度变化及其对生态工程的响应

马小红1,2(), 林菲2, 原黎明2, 牛俊杰2   

  1. 1.太原师范学院,山西省城乡统筹协同创新中心,山西 晋中 030619
    2.太原师范学院,汾河流域科学发展研究中心,山西 晋中 030619
  • 收稿日期:2022-09-27 修回日期:2022-11-17 出版日期:2023-05-20 发布日期:2023-05-31
  • 作者简介:马小红(1990—),女,甘肃定西人,博士,副教授,主要从事干旱区生态水文与碳循环研究。E-mail: maxiaohong@tynu.edu.cn
  • 基金资助:
    山西省应用基础研究计划面上青年基金项目(201901D211419);中国科学院内陆河流域生态水文重点实验室资助项目(KLEIRB-ZS-20-05);山西省高等学校人文社会科学重点研究基地项目(20210141)

Vegetation coverage change and its response to ecological protection project in Fenhe River Basin

Xiaohong Ma1,2(), Fei Lin2, Liming Yuan2, Junjie Niu2   

  1. 1.Shanxi Collaborative Innovation Center for Coordinated Urban and Rural Development /, Taiyuan Normal University,Jinzhong 030619,Shanxi,China
    2.Research Center for Scientific Development in Fenhe River Valley, Taiyuan Normal University,Jinzhong 030619,Shanxi,China
  • Received:2022-09-27 Revised:2022-11-17 Online:2023-05-20 Published:2023-05-31

摘要:

植被作为陆地生态系统的重要组成部分,在干旱半干旱地区的荒漠化防治及水土保持过程中起着至关重要的作用。植被覆盖度则是衡量植被及生态环境状况的重要指标。为了解2000—2020年汾河流域的植被覆盖及生态环境状况,分析了植被覆盖度的空间格局及其变异特征、探讨了植被覆盖度对生态工程的响应关系。结果表明:(1)汾河流域的植被覆盖度呈增加趋势,从2000年的55%增加到2020年的72%, 年增加速率为0.87%,主要表现为高和极高植被覆盖度(>60%)区域面积的增加。汾河流域的生态环境质量得到了极大的改善。(2)在生态工程的影响下,植被覆盖度呈增加的区域面积高达77.1%;而受城镇化及矿产资源开发的影响,有1.7%的区域植被覆盖度呈减小趋势。(3)汾河流域植被覆盖度的时空变异性强,变异系数在0.01~2.20范围波动,仅原有高山林区、河谷农业区及城镇建设区的植被较为稳定。该研究能够为制定生态环境保护和可持续发展相关政策提供一定的理论依据。

关键词: 汾河流域, 植被覆盖度, 生态工程

Abstract:

Vegetation is an important component of terrestrial ecosystems, and it plays an important role in preventing desertification and conserving soil and water in arid and semi-arid regions. Fractional vegetation coverage (FVC), in turn, is an important indicator of vegetation and ecological environment status. To understand the ecological status from 2000 to 2020 in Fenhe River Basin, this study examined the spatial distribution and temporal variations of vegetation coverage, investigated the vegetation response to ecological protection project. Our results demonstrate that: (1) The FVC increase from 55% in 2000 to 72% in 2020, with an increase rate of 0.87% per year, which is manifested with the increase of the high FVC area (FVC>60%). The ecological environment quality of the region has been significantly improved. (2) Under the influence of ecological protection project, FVC increase in 77.1% of the area, and decrease in 1.7% of the area under the urbanization and mineral resources development. (3) The spatial and temporal variability of FVC are great, and the coefficient variation fluctuates between 0.01 and 2.20. The FVC is stable in original alpine forest area, valley agricultural area and urban construction. This study would provide a theoretical basis for formulating polices related to ecological environmental protection and sustainable development.

Key words: Fenhe River Basin, fractional vegetation coverage, ecological protection project

中图分类号: