Dissertation > Excellent graduate degree dissertation topics show

The Analysis of Landscape Patterns and Their Scaling Effects in Small Watersheds of Loess Hilly Area

Author: WangLiNa
Tutor: WangChongChang
School: Liaoning Technical University
Course: Photogrammetry and Remote Sensing
Keywords: loess plateau Landscape ecology landscape pattern landscape index semivariogram
CLC: P901
Type: Master's thesis
Year: 2011
Downloads: 84
Quote: 0
Read: Download Dissertation

Abstract


The comprehensive management with the small watershed as fundamental unit is the effective management method of loess plateau region. It can achieve the Rational distribution of the landscape pattern, the stable of the ecosystem and the ecology health of the small watershed through the comprehensive management of the the small watershed. At the same time, the degree of the Watershed management can be reflected through researching the distribution of the landscape pattern. This paper based on the RS and GIS, investigated the landscape pattern and the spatial heterogeneity of landscape index of three small watersheds in the loess hilly-gully region including the Yangquangou watershed, Zhifanggou watershed and Yangou watershed, and assessment landscape pattern of small watershed. The main research contents and major findings are as follows:(1) According to the actual situation of Yangquangou, Zhifanggou and Yangou watersheds in the loess hilly-gully region, the land covers were classified to lay the foundation for landscape pattern analysis.(2) The characteristics of landscape patterns were analyzed based on the 2009 ALOS satellite images ,through changing the accuracy of the landscape gradally on the method of resampling and coarse the grain size. At the same time, using FRAGSTATS software to analyze the landscape pattern of the three watersheds. The results showed that: Yangquangou, Zhifanggou and Yangou have formed the landscape patterns which were composed of forest, thickets and grass. It was also found that the quantitative analysis was has strongly dependencet on with the grain size.(3) The characteristics of landscape patterns were analyzed based on the 2007 SPOT merged image at resolution of 5m, the 10m spatial resolution of ALOS satellite image, the 25m spatial resolution of P6 satellite image, the 30m spatial resolution of TM satellite image, and the 50m spatial resolution of P6 satellite image, using FRAGSTATS software to analyze the landscape pattern of the three watersheds, according to the change of source resolution. The results showed that: With the lower of resolution, the landscape of Yangquangou, Zhifanggou and Yangou have changed, and the pattern of spatial resolution has an important effect on landscape spation structure, the 25m resolution is an appropriate scale to observed Yangquangou, Zhifanggou and Yangou watershed. It was also found that analysis the structure of the landscape by different data source could give a good expression on the landscape pattern of Yangquangou, Zhifanggou and Yangou watershed.(4) By selecting 2006 resolution merge image of SPOT with spatial resolution of 5m, the semivariogram of the edge density index, landscape diversity index and aggregation index at different extents were simulated by using the geostatistical analyst of GIS. Result indicated that the edge density index, landscape diversity index and aggregation index have the similar characteristics at different extents, and all the scales have spatial dependency. The semivariogram models of different indices had remarkable difference at the same scale.

Related Dissertations

  1. Effect of Soil Erosion on Soil Quality in the Cultivated Slope Land on the Loess Plateau, China,S157.1
  2. The Space Change of Landscape Pattern and Ecological Environment Significance During Recent 15 Year in Yitong River Basin,P901
  3. Study on Non-point Source Pollution of Small Basin Based on Landscape Pattern Metrics,X522
  4. Studies on 32-year Land Use/Cover Change and Its Drivering Forces in Kunming Suburbs,F301
  5. Study on LUCC and Landscape Pattern Based on RS and GIS in Suzhou District of Jiuquan City,F301;P208
  6. Spatial and Temporal Changes and Driving Forces of Wetlands in Haihe River Basin Based on RS and GIS,P237;P208
  7. The Study on Dynamic Change of Wetland Landscape in Poyang Lake Based on RS and GIS Technology,X37
  8. Ecological Restoration and Reconstruction in Open Pit Area Based on Landscape Pattern Changes,X171.4
  9. Optimizing of Green Landscapes EC-Pattern of Zhuzhou City,TU985
  10. The Research of Hefei Urbanization Process and Urban Forest Pattern Dynamic Change,S731.2
  11. The Research on Urban Landscape Estimating and Urban Forest in Guangzhou City,S731.2
  12. Study on Greenland Landscape Pattern in Chenzhou City,S731.2
  13. The Analysis of Dynamic Changes of Forest Landscape in the Core Region of Chang-Zhu-Tan,S731.2
  14. The Research on Based on Sports, Leisure and Urban Forest Landscape Study,S731.2
  15. The Analysis on the Landscape of Urban Green Space System and Evaluation of Soil Quality in Tianxin Distract of Changsha,S731.2
  16. Analysis and Study on Land Use Status Based on GIS,F301
  17. Quantitative Analysis of Landscape Pattern and Assessment of Ecological Security of Hefei City,Q149
  18. Ecologicale Security Assessment Based on LUCC and RS/GIS in Jinan City,X171
  19. Study on Landscape Pattern of Agroforestry Ecosystem in the Region of Changzhutan,S181
  20. A Study on Analysis and Prediction of the Temporal and Spatial Variation of Wetland Landscape Patterns in Dongting Lake,X37

CLC: > Astronomy,Earth Sciences > Physical Geography > General theory and methods > Landscape Architecture,regional theory
© 2012 www.DissertationTopic.Net  Mobile