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扎龙湿地丹顶鹤繁殖生境变化驱动因素分析(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2012年06期
Page:
76-80
Column:
研究论文
publishdate:
2012-12-05

Article Info:/Info

Title:
Driver analysis of breeding habitat change of redcrowned crane (Grus japonensis) in Zhalong wetland
Author(s):
LI Mingyang1ZHANG Chengyi2 WU Jun3XU Ting1
1.College of Forest Resources and Environment,Nanjing Forestry University,Nanjing 210037, China;
2.National Climate Center of China,Beijing 100081,China;3.Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection of China, N
Keywords:
redcrowned crane breeding habitat driver Zhalong wetland
Classification number :
X17;S7599
DOI:
10.3969/j.jssn.1000-2006.2012.06.015
Document Code:
A
Abstract:
Understanding drivers of breeding habitat change of endangered species is the premise of making of wildlife protection plan. Nest site data of redcrowned crane (Grus japonensis) in1996 and 2004, remote sensing images of Landsat TM and DMSP/OLS night time light intensity data at the same periods were collected as the main information source, while the ecological niche model of maximum entropy method (Maxent) was applied to predict breeding habitat of the crane. Then scenario analysis and spatial hot spots exploration were used to study the drivers of breeding habitat change of redcrowned crane. Research results showed that:(1)the area proportion of good and medium quality habitat were dramatically decreased by 287 % and 559 % respectively, while the spatial distribution of high quality breeding habitat for the crane with suitability above 090 were less aggregated and more fragmented;(2) the human disturbance had cage effect on the habitat of endangered bird, while the climate change made the distribution center shift to places with better environmental condition;(3)the hot spots with significantly increased habitat suitability were located at places with improved hydrological and growing conditions of marsh plant,while the cold spots located at places with deteriorated environmental factors.

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Last Update: 2012-11-30