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Differences based on topography landscape scale characteristics of human influence

Author: WangXiaoBin
Tutor: ZhangYi
School: Central China Normal University
Course: Physical Geography
Keywords: Zhuxi County Scale Land Use Landscape Ecology
CLC: F301
Type: Master's thesis
Year: 2011
Downloads: 77
Quote: 0
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Abstract


Landscape ecology-scale problems is a hot issue in the study of Earth combined effect of internal and external forces determine important characteristics of the terrain differentiation by topographic effects of geographic feature was the performance of regional non-zonal restricting human land use intensity and manner of important environmental factors, the land use has important gradient effect. In this paper, differences in terrain degrees as topography measurement indicators, divided into: plains, plateaus and hills three types. Degrees in different types of terrain, the land use and landscape-scale ecological processes vary due. By choosing to bring a different kind of terrain area measuring differences in different terrains human use different scales of landscape heterogeneity and diversity, to a profound understanding of the specific scales of landscape heterogeneity control certain - ecological processes, depth study of human disturbance and the relationship between landscape heterogeneity. In this paper, in April 2008 the SPOT5 remote sensing data (Zhuxi County) use ERDAS9.2 for remote sensing image data correction, image enhancement processing, after it supervised classification is divided into woodland, farmland, urban and industrial land, garden, other agricultural land, transportation and water conservancy land and unused land seven kinds of land-use types. With ARCGIS9.2 Zhuxi County DEM, terrain extraction degree distribution and sampling plan with the transect of land use landscape and land use types under different particle size changes of landscape indices. The results showed that: The selected landscape indices and selected particle size on landscape pattern analysis has important implications. In the analysis of particle effects directly affect the spatial resolution of the original data analysis accuracy of the results, so choose a small correlation between landscape pattern index and select the appropriate size or scale information on landscape pattern analysis is essential. Land use and landscape studies: plain terrain area size 20 ~ 30m office, the vast majority of landscape indices exist inflection point, therefore, 20 ~ 30m particle size is the best size, larger than the particle size, the number of important land use landscape on loses its spatial boundary information. In the terraced terrain area, the most appropriate land use landscape scale domain is 30 ~ 40m, hilly terrain area most appropriate land use landscape scale domain is 40 ~ 60m. Land-use types of research: plain terrain area cultivated and selected urban and industrial land larger particle size, particle size smaller woodland suitable selection. Terraced terrain area of ??arable land and urban and industrial land selected smaller particle size, particle size larger woodland suitable selection. Terraced terrain area of ??arable land and urban and industrial land selected minimum size, maximum size woodland suitable selection. Different regions of undulating terrain of different land use types should select the appropriate resolution remote sensing image data.

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