气候变化领域集成服务门户(CCPortal): Research on barrier function and spatio-temporal heterogeneity of vegetation in southern LRGR

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DOI	10.1007/s11434-006-8143-x
	Research on barrier function and spatio-temporal heterogeneity of vegetation in southern LRGR
	Hao Chengyuan; Dai Erfu; Wu Shaohong; Zhou Changhai; Wang Hao; Pan Tao
发表日期	2006
ISSN	1001-6538
EISSN	1861-9541
起始页码	143
结束页码	153
卷号	51
英文摘要	This article, taking MODIS-EVI as an index, analyzes the spatio-temporal distribution pattern of vegetation in the southern Longitudinal Range-Gorge Region (LRGR) and explains its cause by ARCGIS and SPSS. The result shows that the regional difference of Enhanced Vegetation Index (EVI) is remarkable with apparent topographical effect, especially for longitudinal ranges. As to temporal heterogeneity, because of the existence of certain time difference of the monsoon air affecting the study area, in addition to the obvious regional difference in spatial distribution of EVI, this kind of regional difference is significantly correlated in location with macro-landforms, especially the case of Ailao Mountain and Wuliang Mountain. As to spatial heterogeneity, by taking Ailao Moutain as a rough divide, because of the alternation of high mountains and gorges in the northwest of the study area, precipitation variance almost follows a sine curve from west to east with the mountain and gorge terrain, and hence EVI changes rapidly; while EVI changes insignificantly in the east of the study area because its terrain becomes rather gentle. The effect of longitudinal mountains on the reallocating of heat and moisture factors is the main cause for EVI regional difference. Especially, the effect of Ailao and Wuliang mountains on rainfall interception in rainy seasons and cold wave block in dry seasons is even more obvious. By counting statistical data of points at altitudes between 1400 and 1500 m in a cross-section, the annual mean precipitations in five sub-areas are 1244.67, 1081.44, 1111.41, 1033, and 807.11 mm respectively in rainy seasons, while the annual mean minimum temperatures are 7.93, 7.46, 7.28, 8.44, and 9.16 degrees C respectively in dry seasons.
英文关键词	Longitudinal Range-Gorge Region (LRGR); barrier function; EVI; ecological effect; spatio-temporal heterogeneity
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000242719500017
来源期刊	CHINESE SCIENCE BULLETIN
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257414
推荐引用方式 GB/T 7714	Hao Chengyuan,Dai Erfu,Wu Shaohong,et al. Research on barrier function and spatio-temporal heterogeneity of vegetation in southern LRGR[J]. 中国科学院青藏高原研究所,2006,51.
APA	Hao Chengyuan,Dai Erfu,Wu Shaohong,Zhou Changhai,Wang Hao,&Pan Tao.(2006).Research on barrier function and spatio-temporal heterogeneity of vegetation in southern LRGR.CHINESE SCIENCE BULLETIN,51.
MLA	Hao Chengyuan,et al."Research on barrier function and spatio-temporal heterogeneity of vegetation in southern LRGR".CHINESE SCIENCE BULLETIN 51(2006).