Eastern Inner Mongolia, Sandy Pine Forests In The Spatial Distribution Pattern And Its Driving Force Study

Pinus sglvestris Var.mongolica forest is disconnected distributing and nature conifer community on sandlot in our northeast country, the forest possess important ecology function which include preventing wind and fixing sand. The center distributing area locate in sandstone soil of grassland in Hulunbeier of Inner Mongolia, specially in immovable, self- immovable dune. Pinus sglvestris Var.mongolica forest upgrowth finest in Honghuaerji where locate in southeast area of the center distributing area, the area has been rank as nature protecting area of country grade and collecting seed base.Choosing Pinus sglvestris Var.mongolica forest distributing area in Honghuaerji of east Inner Mongolia as research object, using GIS software such as Arcview3.2 / ArcGis8.12 and landscape pattern analysis software Fragstats3.3. This article, that get going from vegetation distributing influence issue of earth environment and human being activity which is hotspot of plant ecology and plant geography, has studied landscape space pattern and change of Pinus sglvestris Var.mongolica forest in Honghuaerji. This article analyses influence mechanism of landscape space pattern of Pinus sglvestris Var.mongolica forest such as climate, biology diversity, soil, forest fire and change of using ground in multiplayer measure of genus, community, ecosystem and landscape, and clarify the influence that nature aberrance character of plant community and human being activity acted on change of plant distributing. The study based on forest characteristic map at 1990 and remote sensing image map at 2001 showed: the decline of Pinus sglvestris Var.mongolica forest is pricking up interval 11 years, the leading reason is forest fire; the factor of climate, woods density, soil and biology diversity have important influence on nature renewal and stability of Pinus sglvestris Var.mongolica forest; the influences of human being on Pinus sglvestris Var.mongolica forest are gradually building up. The patch number of whole investigative area increases much more. The number of big patch is much more. The difference is larger between big patch and small patch. Patch shape is more complex. Self-comparability is less. Region structure is more complex. Mechanism of distributing pattern and forming of Pinus sglvestris Var.mongolica forest can theoretically open out vegetation inlaid framework character of forest and grassland transition strap, and illuminate significance which region environment and historical factor determine vegetation distributing pattern. The study can afford practical theoretic gist that manage, protect and renew Pinus sglvestris Var.mongolica forest. T he impact that environmental change act on vegetation distributing could be well forecast. The study can also offer scientific foundation for protecting plant genus and continuous resource management.