Study On Comprehension Evaluation Of Ecology Quality Of Suburb Based On RS And GIS

This study has researched in FangShan, Peiking, China and monitored and analyzed the evolutive characters of the land surface ecological component(LUCC(land use and land cover change),NPP(net primary productivity), Soil and Water Loss, etc.) from 1992 to2001 and 2001 to 2004 in study area using remote sensing data integrated the methods and technologies of meteorology and GIS(Geography Information System). Then, taked these indicators in the evaluation indicator system of regional ecology quality and applied the method of hierarchical analysis to build the regional ecology quality assessment model. At last, based the model, analyzed the evolutive characters of the regional ecology quality.This dissertation done some researches and drew some conclusions mainly as follows: 1. Used the Landsat TM image extracted the land use/cover classification change map between three years of the study area and analyzed the dynamic evolutive characters of the land use/cover change between three years.The land use of the study area was mostly forest land and occupied 50.72%,50.73%,52.71% of the total area in three years. Then cropland, urban and village land, grass land was in turn. The forest land and urban and village land was increasing annually, otherwise the cropland and grass land trended to decrease. The change rate of the land use type of the latter stage was greater than the before.The land consume degree and land development degree of land use type except water area increased year and year. The index of the dynamic degree increased annually. The dynamic degree of the residential area and construction land and water area changed severely. The crop land in study area mainly turned to wood land or urban and village land, grass land to crop land or wood land or construction land, wood land to urban and village land. The increasing area of the wood land and urban and village land came from crop land and grass land mostly. The increasing area of the unused land was mainly from crop land in latter and fore stage.2. Used CASA model to calculate the NPP in August three years of the study area and analyze the product, change and characters effected by LUCC of the NPP.In August of three years, the NPP was 152.01gC·m-2·mon-1, 142.83gC·m-2·mon-1,...