.3 S Support Under The Regional Land-use Change And Its Ecological Effects

LUCC is the important component and primary causes of global environment change, the core question of sustainable development, which will be closely linked with humanity's future survival. It is restricted by both natural factor and humanities factor such as society, economy, politics influences and so on. At the same time, the integrated function of LUCC in turn is affecting the global environment and the development of human society. Since 1995 IGBP and IHDP jointly proposed the LUCC research plan, rapidly has caused the widespread attention of internationalsociety and geographer, the LUCC research is generally launched indomestic and foreign, also has become the international front topic of geography study.As the capita] of Shanxi Province,The economical of Taiyuan capital fast developed, the urbanization and industrialization level unceasingly enhanced in recent years, along with the high development, the land use and cover of Taiyuan city also was having the huge change, which cause a series of ecological environment problem. Therefore, the quantitative synthetic study to the urban and suburban area in Taiyuan city, specially accurately withdrawing the LUCC information, and in based on which, the spatial patternchange of ecology service function value caused by LUCC in research area is quantitatively evaluated,which have the important theory and practice significance to the land resource sustainable use in research area, understanding the spatial pattern change of ecological environment which caused by LUCC, promoting the coordinated development of region economy and environment.At present, the research of LUCC offen stresses to the change of land quantity and quality on the certain time ,but neglects the spatial pattern and the spatial evolution. The research of ecosystem service value influenced by land use use are also more, but mostly directly quotes the research results of Constaza and so on or carries on the corresponding adjustment take this as the foundation to calculate the time difference of ecosystem service value, the research to space difference as well as the spatial pattern research of the ecosystem service value in differenttime interval is very few.Instrcted by the geographic information TuPu,ecology and sustainable development theory and so on, take the urban and suburban area in Taiyuan city as an example, based on two remote sensing images, the DEM data and the partial investigation data, on-the-spot investigation, using GIS and RS technology, This research mainly concluded following four aspects research : (1) based on the GIS platform, established the LUCC database of the urban and suburban in Taiyuan city in 1990 -2002 year, analyzed the change tendency of land use and the change characteristic of main land use type in research in this interval; (2) supported by GIS and RS, used the geographic information TuPu theory, produced the land use change TuPu of research in 1990 -2002 year, and the spatial pattern of land use change in research area was further analyzed;(3) the ecosystem service value database of research area in 1990-2002 year was established suported GIS and ecology theory and the ecosystem service value change caused by land use change was quantitative analysed in 1990-2002 year; (4)bsed on the GIS and RS, using the geographic information TuPu theory, the ecosystem service value change TuPu and the ecosystem service value change quantity TuPu was produced of research area in 1990 -2002 year on base of land use change TuPu, the spatial pattern of ecosystem service value change in resarch area was furhher analysed.The important conclusion below was obtained through above synthetic study:(1) The statistical analysis to the land use change database indicated that: in 12 years the overall tendency of research area was: the area of farmland, rangeland and waters relatively reduced, while the area of garden plot, unused land, forest land and construction land relatively increased. The forest land area only increased 8535.74 hm2, which had the biggest increasing area in all land use type. In the same time, the area of farmland had remarkable reduction, reduced by 16456.47 hm2 in 12 years.(2) The characteristic of land use change was that farmland change as unused land, farmland change as construction land in research area in 12 years, What the biggest change area is the transformation from farmland to unused land, altogether 9 772.80 hm2 in farmland transform to unused land, occupied 19.98% of the overall change area, which mainly occured in the north of research area north, namely the Jian caoping area, the primary cause which the increasing of unused land in this region was that university extended as well as some energy chemical industry taken the farmland but not to complete again adds on a part of farmland degenerate to the saline and alkali land.(3) The main extention tendency was the increasing of unused land and forest land, which ocupied 10.68% in all area, occupied 30.49% in all extended area. Seeing from the research area expansionTupu, this mainly occured in the north of research area; In all contraction's area, the contraction's area of farmland was the biggest, accounted for 16.81% of the research area total area, occupied 47.98% of all contraction area.(4) The ecosystem service value caused by land use change presented increasing tendency in 12 years, but the increasing scope is not very big, which explained that the ecological environment of the research area developed to the benign direction in whole. The ecosystem service value of forest land had the biggest contribution to the total ecosystem service value of research area, which mainly benefited in Returning farmland to forest as well as the afforestation policy.(5) Seeing from the ecosystem service value change Tupu and the ecosystem service value change quantity Tupu of research area, the ecosystem service value of Jian caoping area had the obvious reduction, which mainly was caused by the increasing of unused land.The land use change Tupu, land use expansion Tupu, land use contraction Tupu as well as the ecosystem service value change Tupu, ecosystem service value change quantity Tupu were producted supported by RS,GIS and the geographic information Tupu theory, which had the important meaning to understand the spatial pattern and the spatial variation rule of land use change and ecosystem service value change in research area and also was the innovation of this article.