江西省陆地植被空间格局特点及影响因素

Spatial Pattern of Land Vegetation Characteristics and Influencing Factors in Jiangxi Province

为了探求江西省不同地貌特征下的植被空间格局特点及其与影响因素的相互关系,该文以EVImax作为植被覆盖程度指示因子,建立了其与相关影响因子的地理加权回归模型(GWR)。研究表明:(1)在平原区植被主要受到高程的影响,随着高程的升高,形成了湖泊-耕地-河流-居民点-耕地-林混耕地的格局。且在居民点间形成了村落-工业区-城镇的小格局。(2)在丘陵区首先受到坡度因子的影响,形成了盆地(谷地)和山地两大格局,在河流和高程等因子的影响下,整体形成了河流-城镇-耕地-河流-耕地-林混耕地-林地的格局。(3)在山地区,在河流和高程因子共同影响下,形成了河流-城镇-村落(耕地)-林混耕地-林地格局。

The purpose of this paper is to explore the spatial pattern of land vegetation characteristics and influencing factors in Jiangxi province.Taking EVImax as vegetation coverage degree of instruction factor,this research established the driving factors associated with the geographically weighted regression(GWR)model.Research conclusions are:(1)Vegetation cover in the plain area is mainly affected by elevation.And with the elevation rises,it forms a lake-farmland-river-residential-farmlandmixed arable forest pattern.Human activities have a great impact on the plains and form villages-industrial areas-towns pattern among the residential areas.(2)Hilly-gully region is affected by the slope factor first and form two big different patterns which are basin(valley)and mountain.Under the influence of rivers,elevation and other factors,the overall pattern of river-townfarmland-river-farmland-mixed arable forest-woodland is formed.(3)In mountainous areas,under the combined effect of rivers and elevation,the pattern of river-towns-farmland-mixed arable forest-woodland is formed.