| 澜沧江流域云南段道路网络对生态承载力的影响研究 |
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| 引用本文： | 温敏霞,刘世梁,崔保山,富伟,杨敏.澜沧江流域云南段道路网络对生态承载力的影响研究[J].环境科学学报,2008,28(6):1241-1248. |
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| 作者姓名： | 温敏霞 刘世梁 崔保山 富伟 杨敏 |
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| 作者单位： | 北京师范大学环境学院水环境模拟国家重点实验室,北京,100875 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 澜沧江流域道路工程的建设影响着区域土地利用格局和生态系统的空间分布,并进一步影响着区域的生态承载力,辨析道路对生态承载力的影响对区域生态管理具有重要意义.以谰沧江流域各县(市)为研究对象,利用生态足迹法研究了澜沧江流域生态承载力的时空及动态变化;以县域、市域为尺度.提取流域道路网络的结构特点,并进一步利用回归分析研究了道路的网络结构与生态承载力的关系.结果表明,谰沧江流域生态承载力存在着空间分布的不均衡,并呈现逐年降低的趋势;流域道路阿络中不同等级道路的组合结构变化明显,道路密度空间差异显著;县域尺度的回归分析表明,生态承载力与不同等级道路长度符合Gaussian模型、Reciprocal模型.与道路密度均能用ExponentiM Fit模型表示,生态承载力随道路密度的增加而减小;市域尺度上,生态承载力与道路密度的关系与县域尺度相一致.
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| 关 键 词： | 澜沧江流域 生态承载力 生态足迹法 回归分析 |
| 文章编号： | 0253-2468(2008)06-1241-08 |
| 收稿时间： | 2007/5/11 0:00:00 |
| 修稿时间： | 2007年5月11日 |
Effect analysis of road network on ecological capacity in Lancang River Valley |
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| WEN Minxi,LIU Shiliang,CUI Baoshan,FU Wei and YANG Min.Effect analysis of road network on ecological capacity in Lancang River Valley[J].Acta Scientiae Circumstantiae,2008,28(6):1241-1248. |
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| Authors: | WEN Minxi LIU Shiliang CUI Baoshan FU Wei and YANG Min |
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| Institution: | School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875,School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875,School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875,School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875 and School of Environment, State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875 |
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| Abstract: | Road construction in Lancang River Valley has important impacts on land use pattern and ecosystem spatial distribution,and may further the ecological capacity on the large scale.Therefore,estimating road effects on ecological capacity in the region will be more practical.In a case study of each county in Lancang River Valley,we used the method of ecological footprint to study spatio-temporal change of ecological capacity.We picked up the characteristic of road network in Lancang River Valley,and studied the relationship between network form and ecological capacity by regression analysis on two different scales.The results showed that ecological capacity of Lancang River Valley appeared downtrend year by year.And its spatial distribution was unbalance.The mode of different grade road combination in the region changed obviously in road network of the Valley.And the road density had a distinct spatial differentia.Aregression analysis on the scale of county showed that the relationship between length of different grade road and ecological capacity was fit for Gaussian model and Reciprocal model.And that between ecological capacity and road density may be expressed as Exponential Fit model.In general,ecological capacity decreases with the increasing of road density.The relationship between road density and ecological capacity on city scale was consistent with that on county scale. |
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| Keywords: | Lancang River Valley ecological capacity ecological footprint regression analysis |
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