详细信息
长江源典型区湿地对区域气候变化的响应 被引量:4
Response of Wetlands in Typical Area of the Yangtze River Source Region to Regional Climate Change
文献类型:期刊文献
中文题名:长江源典型区湿地对区域气候变化的响应
英文题名:Response of Wetlands in Typical Area of the Yangtze River Source Region to Regional Climate Change
第一作者:刘华
机构:[1]中国林业科学研究院资源信息研究所;[2]中国科学院遥感应用研究所
年份:2013
卷号:26
期号:4
起止页码:406-413
中文期刊名:林业科学研究
外文期刊名:Forest Research
收录:CSTPCD;;Scopus;北大核心:【北大核心2011】;CSCD:【CSCD2013_2014】;
基金:国家重大专项(E0305/1112/02);国家高技术研究发展计划(863计划)(2012AA102001)
语种:中文
中文关键词:长江源;湿地;气候变化;响应
外文关键词:Yangtze River source region; wetland; climate change
分类号:S156.8
摘要:利用1977—2007年间的4期Landsat数据提取研究区湿地信息,分析湿地的动态变化特征和变化驱动因子。利用1971—2007年的气象数据分析研究区主要气候因子的变化趋势与特征,并进一步分析湿地变化与不同气候因子的相关性。结果表明:1977—2007年间,研究区湿地数量萎缩,总面积减少了约37%;湿地质量发生明显退化,主要表现在二、三级湿地即沼泽和滩地退化为草地和裸岩与沙地;近40年来,区域气候向着暖干化趋势发展;气温是影响湿地变化的最主要气候因素。
Landsat images of four periods(1977,1990,1997 and 2007) were used to extract the information of wetlands in the typical area of the Yangtze River source region.The dynamic changes of wetlands and its driving factors during 1977-2007 were analyzed.Meteorological data of 1971-2007 were used to analyze the climate change trends and characteristics of study area,and analyze the relevance of wetland change and climatic factors.The results indicated that,during 1977-2007,the total area of wetlands reduced by 37%.The quality of wetlands degenerated obviously,mainly in marsh and flood land transforming to grassland,bare land and sand land.The regional climate has been tending to warming and drying in recent 40 years and the temperature is the most important factor affecting the changes of wetlands in the study area.
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