资源科学 ›› 2016, Vol. 38 ›› Issue (8): 1434-1442.doi: 10.18402/resci.2016.08.03

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基于高分遥感的可可西里自然保护区藏羚羊生境适宜性动态监测

宋晓阳1(), 申文明2, 万华伟2, 侯鹏2, 林刚1()   

  1. 1.中国矿业大学(北京)地球科学与测绘工程学院, 北京 100083
    2. 环境保护部卫星环境应用中心, 北京 100094
  • 收稿日期:2016-01-10 修回日期:2016-04-05 出版日期:2016-08-25 发布日期:2016-08-25
  • 作者简介:

    作者简介:宋晓阳,女,河北邢台人, 博士生, 研究方向为资源开发遥感应用。E-mail:songxy@lreis.ac.cn

  • 基金资助:
    国家高分辨率对地观测重大专项项目(30-Y30B13-9003-14/16-04;05-Y30B02-9001-13/15)。

Dynamic monitoring of Tibetan antelope habitat suitability in the Hoh Xil Nature Reserve using remote sensing images

SONG Xiaoyang1(), SHEN Wenming2, WAN Huawei2, HOU Peng2, LIN Gang1()   

  1. 1. College of Geoscience and Surveying Engineering,China University of Mining & Technology,Beijing 100083,China
    2. Satellite Environment Center,Ministry of Environment Protection,Beijing 100094,China
  • Received:2016-01-10 Revised:2016-04-05 Online:2016-08-25 Published:2016-08-25

摘要:

动物的生境是动物生活环境因子的综合,是野生动物赖以生存的环境。藏羚羊是一种濒危动物,是中国国家一级保护动物,近年来,人为活动的增加严重破坏了藏羚羊的生境,藏羚羊生境适宜性的评价对藏羚羊生境保护具有重要意义。本文综合考虑藏羚羊生境需求和可可西里自然保护区的生态环境,构建了藏羚羊生境适宜性评价指标体系(生态系统结构、海拔、坡度、水源、人类活动和道路),基于2013年和2014年的国产GF-1遥感卫星影像,提取了生境要素(生态系统结构、水源、人类活动和道路),最后结合DEM数据对保护区内的藏羚羊生境进行了适宜性评价,分析了其动态变化。结果表明:藏羚羊最适宜生境主要分布在海拔为4100~5200m的草地区域,距水源500~2000m,且远离人类活动和道路;2014年可可西里国家级自然保护区藏羚羊生境适宜区和较适宜区的面积占保护区总面积14.78%,主要分布在核心区和缓冲区,相比2013年,适宜区、较适宜区的面积分别增加了161.00km2、60.82km2,总体生境质量略有提高。

关键词: 藏羚羊, 生境适宜性, 可可西里自然保护区, 高分辨率影像

Abstract:

Animal habitat integrates various kinds of environment factors of life and is the basic condition for animal survival. Tibetan antelope (Genus species)are a grade I protected species in China and endangered. In recent years,Tibetan antelope habitat has been damaged by human activity. Therefore,the evaluation of Tibetan antelope habitat suitability is significant for the continued protection of its habitat. Here,in consideration of Tibetan antelope habitat needs and ecological environments in the Hoh Xil Nation Nature Reserve, we constructed an evaluation index system consisting of ecosystem structure,DEM,slope,water source,human activities and roads. Based on domestic GF-1 remote sensing satellite images of 2013 and 2014,we adopted remote sensing technology to extract habitat factors (ecosystem structure,water source, human activities and roads). Then,combining with DEM data,the distribution of Tibetan antelope habitat suitability was evaluated using evaluation modeling. We found that suitable and the sub-suitable habitat for Tibetan antelope were mainly distributed in grassland where the elevation is 4100 to 5200m above sea level,and they are within 500 to 2000m of water resources and far from human activities and roads. The area of suitable and sub-suitable regions are mainly distributed in core and buffer zones accounting for 14.78% of the total area in Hoh Xil Nation Nature Reserve in 2014. Compared to 2013,the area of suitable regions and sub-suitable regions increased by 161.00km2 and 60.82km2 respectively,and this indicates that habitat quality has improved somewhat.

Key words: Tibetan antelope, habitat suitability, Hoh Xil Nature Reserve, high resolution images