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By the influence of complex terrain and topography in Karst area, highway construction has inevitable brought a lot of environment problems such as cultivated land occupation, soil erosion and vegetation destroyed, which caused the fragile ecological environment worsening. So how to make full use of the land resource and keep ecological environment balance will be the important and necessary topic...
Although the terrain cognition of small-scale environment plays an important role in perception of geographical space, few studies have explored this issue. This study focus on the terrain cognition and its role and psychological mechanism in small-scale environment by adopting the Pukou pre-campus in Nanjing University as studying area. The survey interviewed 644 freshmen for two years. Then the...
Kangding County is the important gateway to Tibet Autonomous Region, China. Recently, Kangding County, relying on its water, minerals, tourism, ecology and other advantages of resources, has developed economy, which impact on the ecological environment more apparently. In this paper, we used two LANDSAT TM and ETM data sets and some other vetor data to quantitatively estimate changes in the size of...
Resource utilization issues, and development of methods for effective gauging of stocks and use of land resources, are becoming increasingly important, especially in China. Agricultural production, the extent of arable land, and land use are such key resource issues. Using derived products from GLCNMO urban (Urban areas were extracted using population density data, MODIS-NDVI data, and DMSP-OLS data...
This paper discusses knowledge discovery and feature extraction on the basis of traditional classification method of the remote sensing picture. Multi-level classification method is used in monitoring of mining area land cover. This method is superior to the classifying device of single routine. In this paper, Kailuan mining area land cover change is obtained by using multi-level classification method...
Based on RS and GIS, took 1993, 2000, 2007 and 2009 TM images as the data source, classic area (CA), pieces of Percent of landscape (PLAND), plaque number (NP), patch density (PD), largest patch index (LPI), shape index (LSI), fractal dimension (PAFRAC) were used to analyze the change of landscape from the types of Tangshan coal mining subsidence landscape. Landscape characteristics and dynamics change...
Interferometric synthetic aperture radar (SAR) data offer the opportunity to map the western area of China, acquired from the first Chinese multi-modes airborne SAR mapping system. DEM could be obtained through airborne interferometric pairs. Furthermore, the quality of the InSAR DEM may vary significantly depending on the local topography. Aims of the approach are to smooth the noisy InSAR data,...
In this paper, the mass, composition, vertical distribution of forest floor litter were investigated in a protective greenbelt in Karamay, China. We found that the mass of the litter layer differed significantly throughout the 14 different species mixtures and planting configurations in the study. The forest floor dry weight varied from a high of about 719.36g/m2 under stands containing both trees...
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