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首页> 外文期刊>Quaternary International >An aquatic ecoregion delineation approach based on GIS and spatial environmental data in Heihe River Basin, Northwestern China
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An aquatic ecoregion delineation approach based on GIS and spatial environmental data in Heihe River Basin, Northwestern China

机译：基于GIS和空间环境数据的黑河流域水生生态区划方法。

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摘要

Rapid economic growth in China has presented great challenges to its water resource managers due to a scarcity of water resources, severe water pollution, growing domestic and industrial water demands, and requirements for food security. Aquatic ecoregions are increasingly used as spatial units for aquatic ecosystem management at the watershed scale. In this paper, precipitation, drought index and elevation were selected as the regionalizing indicators for the delineation of level I aquatic ecoregions, and runoff depth, relief and vegetation coverage for the level II aquatic subecoregion delineation. A GIS method integrated with principal component analysis (PCA) and canonical correspondence analysis (CCA) was used in this study. The spatial raster overlay technology and spatial ISODATA clustering analysis approach divided the Heihe River Basin into three level I aquatic ecoregions, and eight level II aquatic subecoregions. Differences among level I and level II aquatic ecoregions in landscape-scale natural geographical attributes, climatic attributes, physical and chemical features of the river, and ecosystem attributes suggest that the aquatic ecoregions delineation is reasonable. (C) 2014 Elsevier Ltd and INQUA. All rights reserved.
机译：由于水资源短缺，严重的水污染，家庭和工业用水需求的增长以及对粮食安全的要求，中国经济的快速增长给水资源管理者带来了巨大的挑战。在分水岭范围内，水生生态区被越来越多地用作水生生态系统管理的空间单位。本文选择降水，干旱指数和海拔作为区域一级指标，用于描述I级水生生态区域，并确定径流深度，起伏和植被覆盖度用于II级水生生态环境区域的划分。本研究使用了一种结合了主成分分析（PCA）和规范对应分析（CCA）的GIS方法。空间栅格叠加技术和空间ISODATA聚类分析方法将黑河流域分为三个一级水生生态区和八个二级水生生态区。 I级和II级水生生态区在景观尺度自然地理属性，气候属性，河流的理化特征和生态系统属性方面的差异表明，水生生态区的划分是合理的。 （C）2014 Elsevier Ltd和INQUA。版权所有。

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  • 来源
    《Quaternary International》 |2015年第4期|272-281|共10页
  • 作者

    Yang Su-zhen; Mao Zhan-po; Liu Chang; Wang Shi-yan; Cheng Dong-sheng; Wang Liang; Wu Jia-peng; Du Yan-liang;

  • 作者单位

    China Inst Water Resources & Hydropower Res IWHR, Beijing 100038, Peoples R China.;

    China Inst Water Resources & Hydropower Res IWHR, Beijing 100038, Peoples R China.;

    China Inst Water Resources & Hydropower Res IWHR, Beijing 100038, Peoples R China.;

    China Inst Water Resources & Hydropower Res IWHR, Beijing 100038, Peoples R China.;

    China Inst Water Resources & Hydropower Res IWHR, Beijing 100038, Peoples R China.;

    China Inst Water Resources & Hydropower Res IWHR, Beijing 100038, Peoples R China.;

    China Inst Water Resources & Hydropower Res IWHR, Beijing 100038, Peoples R China.;

    China Inst Water Resources & Hydropower Res IWHR, Beijing 100038, Peoples R China.;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Aquatic ecoregion; GIS technology; Environmental factors; Heihe River Basin;

    机译：水生生态区GIS技术环境因素黑河流域;

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