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冰川冻土 ›› 2017, Vol. 39 ›› Issue (5): 1130-1136.doi: 10.7522/j.issn.1000-0240.2017.0401

• 寒旱区生物学 • 上一篇    下一篇

2000-2015年祁连山植被变化分析

蒋友严1, 杜文涛2, 黄进3, 赵慧珍3, 王成福3   

  1. 1. 西北区域气候中心, 甘肃 兰州 730020;
    2. 中国科学院 西北生态环境资源研究院 冰冻圈科学国家重点实验室 祁连山冰川与生态环境综合观测研究站, 甘肃 兰州 730000;
    3. 甘肃省气象局, 甘肃 兰州 730020
  • 收稿日期:2016-12-21 修回日期:2017-04-06 出版日期:2017-10-25 发布日期:2018-01-27
  • 作者简介:蒋友严(1981-),男,山东临沂人,高级工程师,2007年在中国科学院寒区旱区环境与工程研究所获硕士学位,从事遥感监测和分析工作.E-mail:jiangyouyan1981@163.com.
  • 基金资助:
    甘肃省自然科学基金项目(1506RJYA189);国家自然科学基金委基础科学人才培养基金冰川学冻土学特殊学科点项目(J1210003/J0109);中国气象局气候变化专项(CCSF201612)资助

Analysis of vegetation changes in the Qilian Mountains during 2000-2015

JIANG Youyan1, DU Wentao2, HUANG Jin3, ZHAO Huizhen3, WANG Chengfu3   

  1. 1. Northwest Regional Climate Center, Lanzhou 730020, China;
    2. Qilian Shan Station of Glaciology and Ecologic Environment, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
    3. Gansu Meteorological Bureau, Lanzhou 730020, China
  • Received:2016-12-21 Revised:2017-04-06 Online:2017-10-25 Published:2018-01-27

摘要: 植被变化对区域生态系统稳定和生态环境变化有着重要的影响。基于MOD13A3数据,建立了2000-2015年祁连山地区植被覆盖时空数据集,结合DEM和土地覆盖分类数据,分析了祁连山地区植被时空分布格局及变化特征,并利用同期气象数据探讨其对气候变化的响应。结果表明:祁连山植被呈东多西少的分布格局,其空间分布与降水空间分布一致;2000年以来祁连山地区灌丛和高寒稀疏草甸先增后减,山地森林草原和高寒草甸增加;整体上祁连山植被覆盖有转好趋势,这与区域暖湿化有关。

关键词: 植被指数, 祁连山, 分布格局, 时空变化

Abstract: Variations of vegetation play an important influence on regional ecosystem stability and ecological environment. In this paper, the MOD13A3 data were used to investigate the vegetation coverage in the Qilian Mountains during 2000-2015. The digital elevation model (DEM) and land cover classification were also applied to divide the interval altitude and different lands use to further discuss spatiotemporal pattern and variations of vegetation coverage, and then to analyze the climatic response by using meteorological data. The results presented that the vegetation coverage pattern in the Qilian Mountains is more in the east and less in the west, consistent with the spatial distribution of precipitation. The bush wood and alpine sparse meadow had grown better from 2000 through 2008, after then, they had gone worse. Meanwhile, alpine sylvosteppe and alpine meadow had become better. The whole vegetation coverage in the Qilian Mountains is increasing, which might be caused by the climatic changing to warmer and wetting.

Key words: NDVI, Qilian Mountains, distribution pattern, spatial-temporal variation

中图分类号: 

  • Q948