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	Quantifying landscape structure of the Heihe River Basin, north-west China using FRAGSTATS
	Li, X; Lu, L; Cheng, GD; Xiao, HL
刊名	JOURNAL OF ARID ENVIRONMENTS
	2001-08-01
卷号	48期号:4页码:521-535
关键词	arid region FRAGSTATS landscape metrics landscape structure geographic information system
ISSN号	0140-1963
通讯作者	Li, X()
英文摘要	We have compiled landscape map of the Heihe River Basin based on the land-use map using geographic information systems. A total of six ecoregions was delineated. Various landscape metrics of each zone, including area, patch density and size, edge, shape, nearest-neighbor, diversity, and contagion and interspersion metrics were calculated using the landscape structure analysis program FRAGSTATS. The results indicated that the landscape pattern of the Heihe River Basin is mainly controlled by the distribution of water resources. The landscape structure in the mountainous area of the Heihe River Basin shows a high continuity and complex patch shapes. The landscape structure of the oasis area shows the most complex landscape structure, the richest patch types, and the highest diversity. The oases are distributed along rivers and artificial channels, and are heterogeneous mosaics embedded in the desert landscape matrix. The landscape structures of oases in different zones vary greatly. In the oasis zone in the Hexi Corridor, the artificial oasis, dominated by irrigated farmland, is one of the most important landscape elements. Conversely, in the Ruoshui River Delta zone, the patches are fragmented and the landscape is easily disturbed. In the transitional belt between oasis and desert, the patch types are meadow, salinized meadow, salt desert, and marsh, which are fragmented and distributed in clusters. These patch types reflect the biodiversity in the and region and play an important role in resisting the desertification in the area, suggesting they must be protected carefully. In the desert area, such as the northern Alxa High Plain, the bare gobi is a landscape matrix with absolute dominance and very high contagion, while other landscape types in the zone are heterogeneous mosaics embedded in the matrix with very small percentage. (C) 2001 Academic Press.
收录类别	SCI
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology ; Environmental Sciences
语种	英语
出版者	ACADEMIC PRESS LTD
WOS记录号	WOS:000170135400007
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556696
专题	寒区旱区环境与工程研究所
通讯作者	Li, X
作者单位	1.Chinese Acad Sci, Cold & Arid Regions Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Li, X,Lu, L,Cheng, GD,et al. Quantifying landscape structure of the Heihe River Basin, north-west China using FRAGSTATS[J]. JOURNAL OF ARID ENVIRONMENTS,2001,48(4):521-535.
APA	Li, X,Lu, L,Cheng, GD,&Xiao, HL.(2001).Quantifying landscape structure of the Heihe River Basin, north-west China using FRAGSTATS.JOURNAL OF ARID ENVIRONMENTS,48(4),521-535.
MLA	Li, X,et al."Quantifying landscape structure of the Heihe River Basin, north-west China using FRAGSTATS".JOURNAL OF ARID ENVIRONMENTS 48.4(2001):521-535.

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