|Table of Contents|

Study of the South Ditch-Pond Wetland Landscape HeterogeneityBased on Micro-Topography——A Case Study of Fengling Watershed(PDF)

《南京师大学报(自然科学版)》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2016年02期
Page:
112-
Research Field:
地理学
Publishing date:

Info

Title:
Study of the South Ditch-Pond Wetland Landscape HeterogeneityBased on Micro-Topography——A Case Study of Fengling Watershed
Author(s):
Gao PengfeiLi YufengLiu HongyuJi XiangSun YimingLi Yuling
Jiangsu Key Laboratory of Environmental Change and Ecological Construction,School of Geography Science,Nanjing Normal University,Nanjing 210023,China
Keywords:
micro topographyditch-pond wetland systemnetwork structureFengling watershed
PACS:
P951
DOI:
10.3969/j.issn.1001-4616.2016.02.020
Abstract:
Based on Quickbird remote sensing image and DEM,using GIS technology and combined with field survey,through the SPSS data analysis software to research on the topography,ditch-pond wetland system network structure and spatial heterogeneity of the Fengling watershed in Yizheng are studied. The results show that:①The main feature of the watershed is micro-topography,but in the average degree of slope,the average profile curvature,the variation coefficient of average elevation still exist obvious differences. On the basis of three characteristics of A,B,C,the terrain complexity is decreased in turn. ②In different feature areas,the landscape structure characteristics of ponds and ditches are different. Among the three regions,the index of the area of ponds in the unit area has no significant difference,but the indexes of capacity in the unit area,density,aggregation,cohesion have significant difference,overall,the region which topographic features are simpler,the network features of ponds are more complex;Ditches in the indexes of degree of ring,connected have no significant difference,but the indexes of number in the unit area,node number in the unit area,density and line rate have significant difference,overall,the region which topographic features are more complex,the network features of ditches are more complex. ③In different feature areas,the landscape structure characteristics of the ditch-pond wetland system are different. Among the three regions,the index of connection rate has no significant difference but the indexes of line and plane rate,up to total cost have significant difference,overall,the region which topographic features are more complex,the network features are more complex. Through the analysis of the topography, the ditch-pond wetland system landscape structure and its heterogeneity, it can be better to design the ditch-pond wetland system in different areas, and distribute the water resources efficiently.

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Last Update: 2016-06-30