干旱区生态环境知识资源中心(Arid): 高寒荒漠区河流廊道景观动态及驱动因子分析以阿尔金山自然保护区为例

Arid

	高寒荒漠区河流廊道景观动态及驱动因子分析以阿尔金山自然保护区为例
其他题名	Landscape dynamics along a river corridor in alpine desert region and its driving factor analysis:A case study in Altun National Nature Reserve
	刘世梁 1; 赵海迪 1; 董世魁 1; 苏旭坤 1; 刘琦 1; 张翔 2
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2014
卷号	33 期号:6 页码:1647-1654
中文摘要	高寒荒漠区草地动态是全球变化研究的重要内容。作为我国四大无人区之一,阿尔金山国家级自然保护区草地的变化对于生物栖息地影响巨大,而关键河流廊道的草地景观动态受气候变化影响更为显著。基于GIS和RS技术,选择阿雅克湖流域典型河流廊道景观,利用1990、2001和2007年的遥感影像并运用景观生态学方法对景观格局及其变化进行了研究。结果表明,水域和盐碱地面积显著增加,不同覆盖度草地转换频繁,总体上呈退化趋势。景观总体格局变化较大,斑块密度与景观多样性指数增加,而景观形状趋向简单,最大斑块指数增加,分离度降低。水域、盐碱地的增加及草地退化使得NDVI值降低。结合气候变化趋势,降水的增加与气温的升高是景观变化的主要驱动力,湖水水面和水位的增加改变了沼泽的分布,导致了地下水位升高,土壤盐碱化程度增加。
英文摘要	Alpine desert grassland dynamics is important for global change study.As one of the four largestno-man landsin China,Altun Mountain National Nature Reserve is facing alpine desert grassland ecosystem changes,which may have a tremendous impact on the habitats of wild animals.Especially,the landscape along the rive corridor could be greatly affected by climate change.Based on GIS and RS technology,we selected a typical river corridor in Aya Lake Basin as the case study site and classified the landscape types using remote sensing data in 1990,2001 and 2007.Taking advantages of landscape theories and methods,we analyzed the landscape pattern and dynamics in the region.The results showed that the areas of both water and saline-alkali lands in the region increased significantly,while the grasslands with different coverage degraded due to the conversion into other land uses.The integrated pattern of landscape changed greatly. Patch density and landscape diversity index increased,while the landscape shape became simple.Largest patch index increased and the splitting index decreased.The increases of water area and saline-alkali land with grassland degradation caused the decrease of the NDVI values.Climate change trend analysis suggested that the increases in precipitation and temperature were the major driving forces for the landscape change in the region.The rise of the lake water area changed the distribution of the swamp,leading to the increase of water table and the increase of soil salinization.
中文关键词	景观格局 ; 高寒草地 ; 气候变化 ; 阿尔金山
英文关键词	NDVI landscape pattern alpine grassland climate change NDVI Altun Mountain
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:5161682
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231648
作者单位	1.北京师范大学环境学院, 水环境模拟国家重点实验室, 北京 100875, 中国; 2.阿尔金山国家级自然保护区管理局, 库尔勒, 新疆 841000, 中国
推荐引用方式 GB/T 7714	刘世梁,赵海迪,董世魁,等. 高寒荒漠区河流廊道景观动态及驱动因子分析以阿尔金山自然保护区为例[J]. 北京师范大学,2014,33(6):1647-1654.
APA	刘世梁,赵海迪,董世魁,苏旭坤,刘琦,&张翔.(2014).高寒荒漠区河流廊道景观动态及驱动因子分析以阿尔金山自然保护区为例.生态学杂志,33(6),1647-1654.
MLA	刘世梁,et al."高寒荒漠区河流廊道景观动态及驱动因子分析以阿尔金山自然保护区为例".生态学杂志 33.6(2014):1647-1654.