| 石羊河流域土地利用类型景观异质性 |
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| 引用本文： | 魏伟,赵军,王旭峰.石羊河流域土地利用类型景观异质性[J].生态学杂志,2010,29(4). |
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| 作者姓名： | 魏伟 赵军 王旭峰 |
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| 作者单位： | 1. 西北师范大学地理与环境科学学院,兰州,730070
2. 中国科学院寒区旱区环境与工程研究所,兰州,730000 |
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| 基金项目： | 国家自然科学基金项目(40961026); 甘肃省自然地理学重点学科项目(5001-048); 西北师范大学知识与科技创新工程资助项目(NWNU-KJCXGC-03-23) |
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| 摘 要： | 在GIS支持下,以TM/ETM遥感影像为数据源,利用人工解译方法得到石羊河流域14类景观,并结合数字高程模型(DEM),参考相关的地理基础图件,应用景观生态学理论和方法,采用景观空间格局指标对石羊河流域荒漠、绿洲为主的生态系统景观异质性做了分析。结果表明:耕地、林地、草地和沙地是主要的景观类型和结构成分,其相对频率平均值都在42%以上;在荒漠景观生态系统中,基质沙地的异质性是均质化方向上的异质性,而在绿洲景观生态系统中,基质林地、草地和耕地的异质性是异质化方向上的异质性;作为廊道的水系景观,其相对频率在荒漠和绿洲生态系统中都是较小的,且斑块和廊道异质性均表现为异质化方向上的异质性。研究结果对干旱内陆河流域土地有效利用及生态环境变化监测研究具有重要意义。
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| 关 键 词： | 石羊河流域 景观异质性 景观生态系统 相对频率 |
Landscape heterogeneity of land use types in Shiyang River basin |
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| WEI Wei,ZHAO Jun,WANG Xu-feng.Landscape heterogeneity of land use types in Shiyang River basin[J].Chinese Journal of Ecology,2010,29(4). |
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| Authors: | WEI Wei ZHAO Jun WANG Xu-feng |
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| Institution: | WEI Wei1,ZHAO Jun1,WANG Xu-feng2 (1College of Geographical , Environment Science,Northwest Normal University,Lanzhou 730070,China,2Cold , Arid Regions Environmental , Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China) |
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| Abstract: | With the support of GIS technology and taking the TM/ETM remote sensing images as the data source,14 types of landscapes in Shiyang River basin were obtained by using the artificial interpretation method.A series of other data such as digital elevation model (DEM),vegetation maps,and land use maps were used,and the theories and methodologies of landscape ecology as well as the landscape spatial pattern index were adopted to analyze the landscape heterogeneity of desert and oasis ecosystems in Shiyang River ... |
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| Keywords: | Shiyang River basin landscape heterogeneity landscape ecosystem relative frequency |
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