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首页> 外文期刊>Stochastic environmental research and risk assessment >Assessing ecological security at the watershed scale based on RS/GIS: a case study from the Hanjiang River Basin
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Assessing ecological security at the watershed scale based on RS/GIS: a case study from the Hanjiang River Basin

机译：基于RS / GIS的流域尺度生态安全评价-以汉江流域为例

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摘要

The purpose of this study is to develop an assessment framework of ecological security at the watershed scale to meet the need of watershed management, and to assess ecological security using this framework in the middle and lower reaches of Hanjiang River Basin (in Hubei Province, China). The states and their changes of ecological security in the study region are investigated with the support of ERDAS and ARC/INFO platform. The results show that the ecological security index (P) values in 1995 and 2000 were 0.685 and 0.699 respectively in the study region. While in 2005 and 2010, the P values were decreased to 0.657 and 0.624. In 1995, there were 5 counties with degree Ⅱ state (the poor state) of ecological security, and 14 counties with degree Ⅲ state (the common state). By 2000, the amount of counties with degree Ⅱ decreased to 4 counties. And the number of counties with degree Ⅱ is the same as 2000 in 2005. The result of 2010 shows there were 12 countries with degree Ⅲ state as well as 7 counties with degree Ⅱ state. The results of our case study of the Hanjiang River Basin reflect that the ES situation is very grim in the study area. The degree of ecological security developed in this study can be used as a useful tool for watershed managers and decision-makers.
机译：这项研究的目的是建立一个流域尺度的生态安全评估框架，以满足流域管理的需要，并利用此框架在汉江流域中下游地区（中国湖北省）进行评估。 ）。在ERDAS和ARC / INFO平台的支持下，对研究区域的生态安全状况及其变化进行了研究。结果表明，研究区1995年和2000年的生态安全指数（P）分别为0.685和0.699。而在2005年和2010年，P值分别降至0.657和0.624。 1995年，有5个县处于Ⅱ级状态（贫困状态）的生态安全，有14个县处于Ⅲ级状态（共同状态）。到2000年，二级县的数量减少到4个。 Ⅱ级县的数量与2005年的2000个相同。2010年的结果显示，有Ⅲ级国家的国家为12个，而Ⅱ级国家的国家为7个。我们对汉江流域的案例研究结果表明，研究区的ES形势非常严峻。在这项研究中开发的生态安全程度可以用作流域管理者和决策者的有用工具。

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  • 作者

    Guangming Yu; Shu Zhang; Qiwu Yu; Yong Fan; Qun Zeng; Lei Wu; RuiRui Zhou; Na Nan; Pengjie Zhao;

  • 作者单位

    College of Urban and Environmental Sciences, Central China Normal University, Wuhan 430079, People's Republic of China;

    College of Urban and Environmental Sciences, Central China Normal University, Wuhan 430079, People's Republic of China;

    College of Urban and Environmental Sciences, Central China Normal University, Wuhan 430079, People's Republic of China;

    College of Urban and Environmental Sciences, Central China Normal University, Wuhan 430079, People's Republic of China;

    College of Urban and Environmental Sciences, Central China Normal University, Wuhan 430079, People's Republic of China;

    College of Urban and Environmental Sciences, Central China Normal University, Wuhan 430079, People's Republic of China;

    College of Urban and Environmental Sciences, Central China Normal University, Wuhan 430079, People's Republic of China;

    College of Urban and Environmental Sciences, Central China Normal University, Wuhan 430079, People's Republic of China;

    College of Urban and Environmental Sciences, Central China Normal University, Wuhan 430079, People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Ecological security assessment; Indicator system; Degree of ecological security; Spatial analysis; Watershed management; Watershed scale;

    机译：生态安全评估;指标体系;生态安全程度;空间分析;流域管理;分水岭规模;

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