title: [Effects of climate and grazing on the vegetation cover change in Xilinguole League of Inner Mongolia, North China].
abstract: Based on the monthly temperature and precipitation data of 15 meteorological stations and the statistical data of livestock density in Xilinguole League in 1981-2007, and by using ArcGIS, this paper analyzed the spatial distribution of the climate aridity and livestock density in the League, and in combining with the ten-day data of the normalized difference vegetation index (NDVI) in 1981-2007, the driving factors of the vegetation cover change in the League were discussed. In the study period, there was a satisfactory linear regression relationship between the climate aridity and the vegetation coverage. The NDVI and the livestock density had a favorable binomial regression relationship. With the increase of NDVI, the livestock density increased first and decreased then. The vegetation coverage had a complex linear relationship with livestock density and climate aridity. The NDVI had a positive correlation with climate aridity, but a negative correlation with livestock density. Compared with livestock density, climate aridity had far greater effects on the NDVI.
authors.affiliation: Inner Mongolia Meteorological Institute, Hohhot 010051, China. wanghmhuhe@126.com
authors.forename: Hai-Mei
authors.initials: HM
authors.lastname: Wang
authors.forename: Zheng-Hai
authors.initials: ZH
authors.lastname: Li
authors.forename: Zhen
authors.initials: Z
authors.lastname: Wang
mesh_terms: D000818:Animals; D002681:China; D002980:Climate; D003247:Conservation of Natural Resources; D017753:Ecosystem; D060434:Herbivory; D006813:Humidity; D006109:Poaceae / Q000254:growth & development*