文章采用Shannon-Wiener指数、Pielou指数及Simpson指数研究山西植被多样性空间变化。在ArcGIS软件将山西县市地图与群系图进行叠置,统计群系数目及面积,计算多样性指数及制作其空间分布图.植被的Shannon-Wiener指数和Simpson指数增加的县要比减少的县多,而Pielou指数则相反.栽培植被的Shannon-Wiener指数和Pielou指数增加的县要比减少的县多,但Simpson指数却相反.其他植被的三个指数增加的县均比减少的县多.植被的三个指数均没有不变的县,栽培植被的Shannon-Wiener指数和Pielou指数不变的县最多,但Simpson指数却无不变的县.森林的三个指数不变的县较多,而灌丛、草本植被则较少不变的县.
Spatial changes of vegetation diversity in Shanxi are studied with Shannon-Wiener index,In ArcGIS software,the number of formation was counted and the area of every formation was calculated after the map of counties and cities in Shanxi and the map of formation were overlaid.Diversity indices were calculated and the maps of their spatial distribution were made.Increasing counties and cities is more than decreasing counties and cities in Shannon-Wiener index and Simpson index of vegetation and in Shannon-Wiener index and Pielou index of cultivated vegetation.But increasing counties and cities is less than decreasing counties and cities in Pielou index of vegetation and in Simpson index of cultivated vegetation.Increasing counties and cities is more than decreasing counties and cities in three indices of other vegetations except cultivated vegetation.Three indices of vegetation and Simpson index of cultivated vegetation in all counties and cities change.Shannon-Wiener index and Pielou index of cultivated vegetation is the most in all kinds of vegetation according to their no change indices.Forest is more than scrub and herbaceous vegetation according to three no change indices.