The Study On Land Use/Land Cover Change In The Western Taihang Mountain Area Of Shijiazhuang

The study on land use / land cover change in typical area on areal and local scale, can not only deepen the discussion of relevant scientific problems on land use change, but also provide more abundant and accurate information for comprehensive analysis of land use change, even for study on global environmental change.The western mountain area of Shijiazhuang belongs to middle part of Taihang Mountain area in Hebei Province. Its ecosystem fragility and sensitiveness are all remarkable. The article takes it for example to study LUCC and its driving force, then offers experience and pattern of sustainable development for Taihang Mountain area and other fragile ecology mountain area. Undoubtedly the study will produce great realistic meanings.The author captures land use data from Lansat TM image TM in 1987 and ETM in 2000. First, the article uses remote sensing image processing software Erdas 8.5 for geometric correction, image enhancement and mosaic and beset the data. Then, on the base of uniform the reference projection frame for image data> raster data> vector data and other relevant data by control grid, the article adopts some principles to set up the signs of image identification and interpretation, including the principle of remote sensing information combined with geographical materials, the principle of indoor interpretation combined with expertise and field investigation, the principle of comprehensive analysis combined with dominant analysis. Meanwhile, figures and attribute database are obtained through man-machine interactional interpretation. Finally, the article carries out spatial overlay analysis by geographical information system software Arc/Info, and draws change data by combing with ArcView and FoxPro software.The analysis of LUCC integrates all kinds of models and methods of present land use study, and gives qualitative and quantitative analysis on LUCC space-time evolvement and LUCC space pattern evolvement. This article describes the changespeed of land use type number according to the model of dynamic degree of single land use and the dynamic degree of comprehensive land use and uses land type transition matrix to analyze space-time evolvement of land use degree and calculates land use change degree by comprehensive land use degree change model and gives the regional differences of land use change by the relative change rate index model of land use type and makes qualitative analysis of land use spatial pattern based on overlay of two periods by time-space information analysis; make quantitative analysis of spatial pattern of landscape through calculating the landscape diversity index, landscape advantage degree, landscape equality degree index and landscape breakage degree index.At last, the article gives comprehensive analysis of nature driving factors and humanity driving factors. The former includes precipitation, temperature, topography, physiognomy, soil, etc; the latter includes population, policy, development of resources, economic development, etc. The driving force of land use type dynamic change is discussed further.This article has made some innovations. Distinctive quality are as follows: 1) It is the first time to analyze land use dynamic change for fragile ecosystem, the western Taihang mountain area of Shijiazhuang. It adopts GIS RS methods and integrates various kinds of models and methods. 2) It has probed into the drive mechanism of every land use type dynamic change through analyzing nature and human factors.