欢迎访问林草资源研究

林业资源管理 ›› 2015›› Issue (6): 64-70.doi: 10.13466/j.cnki.lyzygl.2015.06.013

• 科学研究 • 上一篇    下一篇

北疆不同生态功能区近30年来植被盖度时空变化

王计平1, 郭仲军2, 黄继红3, 臧润国3, 刘轩4   

  1. 1.国家林业局盐碱地研究中心,北京 100091;
    2.新疆林业科学院森林生态研究所,乌鲁木齐 830000;
    3.中国林业科学研究院森林生态环境与保护研究所,北京 100091;
    4.北京林业大学 林学院,北京 100083
  • 出版日期:2015-10-28 发布日期:2020-11-19
  • 通讯作者: 郭仲军,男,副研究员,硕士,主要从事干旱区植被恢复评价研究。Email:gzj19641101@sina.com
  • 作者简介:王计平(1978-),男,山西保德人,助理研究员,博士,主要从事植被恢复、景观生态格局优化与过程模拟等方面的研究。Email:wjp_gis@163.com
  • 基金资助:
    科技部基础性工作(2013FY111600-2)

Characteristics of Spatio-temporal Variation of NDVI in Different Ecological Function Zones in North Xinjiang in Recent 30 Years

WANG Jiping1,GUO Zhongjun2,HUANG jihong3,ZANG Runguo3,LIU Xuan4   

  1. 1.Research Center of Saline and Alkali Land of State Forestry Administration,CAF.,Beijing 100091,China;
    2.Institute of Forest Ecology,Xinjiang Forestry Academy,Urumqi 830000,China;
    3.Research Institute of Forest Ecology,Environment and Protection,CAF.,Beijing 100091,China;
    4.Beijing Forestry University,College of Forestry,Beijing 100083,China
  • Online:2015-10-28 Published:2020-11-19

摘要: NDVI时空变化不仅可反映生态环境的变动趋势,而且还能揭示出区域植被的恢复与退化状况。以1981—2003年GIMMS NDVI和1998—2010年SPOT VGT NDVI时间序列数据为基础,运用NDVI最大值合成法和趋势分析法,分析了北疆近30年来不同生态功能区及不同植被类型NDVI时空变化规律。结果表明:1)从北疆大功能区来看,1981—2003年期间NDVI平均值变化呈周期波动,增幅缓慢,并以2002年为转折期,北疆整体植被改善程度不断增强。2)从不同生态功能区看,1981—2003年伊犁河谷地区、天山北坡和阿尔泰山的南部生态区等主要生态功能区植被改善明显,在准噶尔盆地荒漠生态区及其东部区植被呈轻度植被退化;1998—2010年北疆大部地区植被恢复明显,伊犁河谷、天山北坡中段绿洲平原区植被改善程度达到极显著水平。3)北疆植被的改善或退化趋势可能与同期实施的生态建设工程以及区域气候的总体变化有关。

关键词: 北疆, NDVI时间序列数据集, 植被, 时空变化

Abstract: Spatial and temporal variations of NDVI can not only reflect the changing trend of the ecological environment,but also reveal the recovery situation and degeneration of regional vegetation.According to the data of time series,which were GIMMS NDVI from 1981 to 2003 and SPOT VGT NDVI from year 1998 to 2010,this paper analyzed the spatial and temporal variations of ecological function area and NDVI of different vegetation types of northern Xinjiang in recent 30 years,with the maximum synthesis method of NDVI and the trend analysis method.The results showed as follows(1)From the perspective of functional areas in Northern Xinjiang,the average value of NDVI grew slowly and changed with the periodic fluctuation during the period from 1981 to 2003,while as a turning period in 2002,the improvement of the whole vegetation enhanced continuously.(2)From the perspective of different ecological function districts,the vegetation of ecological function areas in Yili River Valley,the northern slope of Tianshan Mountains and the south of Altai Mountains were obviously improved during the period from 1981 to 2003,while the vegetation of desert ecological area and eastern region of the Junggar basin were degenerated mildly.The vegetation in most parts of northern Xinjiang restored significantly during the period from 1998 to 2010,and the vegetation improvement reached the extremely significant level in the Yili River Valley and the plain oasis area in the middle of the northern slope of Tianshan Mountains.(3)The improvement or degradation trends of vegetation in northern Xinjiang may be related to the implementation of ecological construction and the overall regional climate change during the same period.

Key words: North Xinjiang, time-series NDVI data, trend analysis, vegetation, spatio-temporal variation

中图分类号: