| 基于景观结构变化的青海湖流域湿地空间分析 |
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| 引用本文： | 陈克龙,朵海瑞,李准,杨龙. 基于景观结构变化的青海湖流域湿地空间分析[J]. 湿地科学与管理, 2009, 5(4): 36-39. DOI: 10.3969/j.issn.1673-3290.2009.04.08 |
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| 作者姓名： | 陈克龙 朵海瑞 李准 杨龙 |
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| 作者单位： | 青海师范大学生命与地理科学学院,西宁,810008;中国林业科学研究院研究生院,北京,100091 |
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| 基金项目： | 国家科技支撑项目:生物多样性对气候变化的响应研究,国家自然科学基金项目:青海湖北部湿地生态系统健康评价与生态基准重建 |
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| 摘 要： | 以青海湖流域为研究区域,以遥感影像为主要信息源,以景观指数为空间分析方法,从流域和县域两级水平对青海湖流域1977-2000年湿地景观变化进行空间分析。结果表明:近30年青海湖流域湿地面积净减少101247hm2,斑块数目增加了1099个,破碎程度明显增加,分离度呈上升趋势,分维数逐渐变小趋近于1,人类活动的加剧导致青海湖流域湿地景观空间结构变化。
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| 关 键 词： | 湿地景观 时空变化 青海湖流域 |
Spatial analysis of the wetlands in Qinghai Lake region based on changes in landscape structure |
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| CHEN Ke-Long,DUO Hai-Rui,LI Zhun,YANG Long. Spatial analysis of the wetlands in Qinghai Lake region based on changes in landscape structure[J]. Wetland Science & Management, 2009, 5(4): 36-39. DOI: 10.3969/j.issn.1673-3290.2009.04.08 |
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| Authors: | CHEN Ke-Long DUO Hai-Rui LI Zhun YANG Long |
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| Abstract: | Qinghai Lake basin was taken as the study area,spatial analyses were conducted of wetland landscape changes from 1977-2000 at county and basin levels using remote sensing data as the main source of information and the landscape index as the tool for spatial analyses.The results showed that:During nearly 30 years,the total area of wetlands in Qinghai Lake basin is declining,with a net reduction of 101 247 hm2,and an increase of 1 099 in the number of wetland spots;fragmentation was significantly intensified,and separation among wetland spots tended to increase;the fractal dimension gradually downward to 1,the influences of human activities towards Qinghai Lake wetland landscape have increased. |
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| Keywords: | Wetland landscape Temporal and Spatial change Qinghai Lake basin |
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