干旱区生态环境知识资源中心(Arid): 柴达木盆地荒漠绿洲景观格局定量分析

Arid

	柴达木盆地荒漠绿洲景观格局定量分析
其他题名	Quantitative Analysis of the Desert-oasis Landscape Pattern of Qaidam Basin
	欧立业 1; 马海州 1; 沙占江 1; 曹广超 1; 薛亮 1; 杨海镇 2
来源期刊	盐湖研究
ISSN	1008-858X
出版年	2003
卷号	11 期号:4 页码:28-32
中文摘要	以柴达木盆地土地利用现状图为基本图件,在GIS支持下编制了柴达木盆地土地利用景观图.在此基础上选取多种景观指数,即选取斑块大小、斑块数、聚集度、相似邻接百分比、景观优势度指数、面积加权的平均斑块分形指数、散布与并列指数、香农多样性指数和香农均度指数等主要景观格局指数,定量地分析柴达木盆地荒漠绿洲景观格局特征.结果表明:柴达木盆地景观的主要斑块类型为未利用土地和草地,二者面积之和占全区的95%左右;绿洲景观以耕地、园地、林地以及城镇工矿用地等形式镶嵌在景观中,它们由于受到绿洲内人类活动的强烈影响,分形指数大,破碎度高;园地、水域与沼泽、林地和耕地的分布均比较分散,与其它类型相互混杂分布,说明绿洲内部缺乏高度连接的景观,生态系统脆弱;总体上看,柴达木盆地的景观比较单调,多样性指数较小,破碎化程度较低,景观异质性不高.
英文摘要	The Qaidam Basin, as a famous inland basin in China, is composed of different ecosystems such as mountain, oasis and desert. Its landscape structure is mainly manifested by the desert- oasis pattern. In this paper, area of patches, number of patches, aggregation index, percentage of like adjacencies, landscape domi-nanee index, fractal dimension of patches, interspersion and juxtaposition index, Shannon’ s diversity index, and Shannon’ s evenness index are calculated by GIS and FRAGSTATS to analyze the spatial distribution and spatial structure of the landscape types in Qaidam Basin. The The Research Center for Resources and Environment of Qinghai -Tibetan Plateau, Qinghai Normal University results indicate that: ① The main patch types are grassplot and unavailable land in Qaidam Basin landscape, and their total area percent is about 95; ② Plantations, garden plots, woodlands, cities and diggings are mosaic in the oasis landscape. Due to intensive human activities in oasis landscape, their fragmentation index and fractal dimension indice are high. Garden plot, water and swamp, woodland and plantation distribute dispeisedly and disorderly with other patch types, which presented that the landscape lacks highly conjunction in oasis and the ecosystem of oasis is frangible; ③ As a whole, Qaidam Basin has a simpler landscape, with lower diversity index, lower degree of fragmentation and lower heterogeneity.
中文关键词	柴达木盆地 ; 荒漠绿洲 ; 景观格局 ; 景观指数
英文关键词	GIS Qaidam Basin Desert - oasis Landscape pattern GIS Landscape index
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:1490450
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204511
作者单位	1.中国科学院青海盐湖研究所, 西宁, 青海 810008, 中国; 2.青海师范大学青藏高原资源与环境研究中心, 西宁, 青海 810008, 中国
推荐引用方式 GB/T 7714	欧立业,马海州,沙占江,等. 柴达木盆地荒漠绿洲景观格局定量分析[J]. 中国科学院西北生态环境资源研究院,2003,11(4):28-32.
APA	欧立业,马海州,沙占江,曹广超,薛亮,&杨海镇.(2003).柴达木盆地荒漠绿洲景观格局定量分析.盐湖研究,11(4),28-32.
MLA	欧立业,et al."柴达木盆地荒漠绿洲景观格局定量分析".盐湖研究 11.4(2003):28-32.