空间权重对分析地理要素时空关联格局的影响——基于中国大陆省域水资源消耗强度的实证

发布时间：2018-02-22 00:10

  本文关键词： 组合权重 探索性空间数据分析方法 水资源消耗强度 时空格局 中国大陆　出处：《地理研究》2017年05期 　论文类型：期刊论文

【摘要】：基于区域经济发展水平、资源禀赋等地理要素对水资源利用效率的耦合影响,以2003-2013年中国大陆省区为例,应用多种空间权重方案对省际水资源消耗强度的时空格局进行比较分析,针对评价结果的不确定性,提出了基于GDP-距离倒数的改进空间权重方案,并进行实证研究。结果表明:(1)应用对称性空间赋权方法,得出的省际水资源强度的空间自相关特征检验结果具有局限性,依据基于邻接或距离原则构建的空间权重,评价结果不够稳健;(2)应用GDP-距离倒数的组合空间权重方案,能够充分体现经济—地理要素对水资源利用效率的非对称性影响,所得局部空间自相关评价结果的可靠性提高;(3)在研究时段内,中国大陆省际居民生活用水强度的时空异质性最小,生态环境用水强度异质性最大,工业和农业用水强度的时空异质性相对较小并且具有显著的全局空间自相关特征;(4)省际工业用水强度具有南北分异特征,局部低—低集聚区位于黄河以北并且相对稳定,高—高集聚区位于长江以南并趋于弱化;(5)省际农业用水强度的局部高—高集聚、高—低集聚区位于中国大陆西部,且研究时段内表现相对稳定。基于GDP-距离倒数的组合空间权重方案,能够同时体现省际经济水平及空间距离的临近度,因此可在一定程度上提高相关研究中评价结果的可靠性。
[Abstract]:Based on the coupling effect of regional economic development level, resource endowment and other geographical factors on water resource utilization efficiency, taking the provinces and regions of mainland China from 2003 to 2013 as an example, Based on the uncertainty of evaluation results, an improved spatial weight scheme based on GDP-distance countdown is proposed to compare and analyze the temporal and spatial patterns of water resources consumption intensity among provinces by using various spatial weight schemes. The results show that the spatial autocorrelation characteristic test of provincial water resources intensity obtained by using symmetric spatial weighting method has limitations, and the spatial weight is constructed based on the principle of proximity or distance. The evaluation results are not robust enough) the combined spatial weight scheme of GDP-distance reciprocal can fully reflect the asymmetric influence of economic-geographical factors on water resources utilization efficiency. The reliability of the local spatial autocorrelation evaluation results was improved. (3) in the period of study, the spatial and temporal heterogeneity of domestic water intensity and ecological environment water intensity heterogeneity were the lowest in the interprovincial area of China and the largest in the ecological environment. The spatial and temporal heterogeneity of industrial and agricultural water use intensity is relatively small and has a significant global spatial autocorrelation feature. (4) the inter-provincial industrial water intensity has the characteristics of North-South differentiation, and the local low-low concentration area is located north of the Yellow River and is relatively stable. The high-high agglomeration area is located in the south of the Yangtze River and tends to weaken the inter-provincial agricultural water intensity local high-high agglomeration, and the high-low agglomeration area is located in the western part of the Chinese mainland. The combined spatial weight scheme based on the reciprocal of GDP-distance can simultaneously reflect the economic level of provinces and the proximity of spatial distance, so it can improve the reliability of the evaluation results to some extent.
【作者单位】： 南京大学地理与海洋科学学院;中国南海研究协同创新中心;
【基金】：国家基础科学人才培养基金项目(J1103408)
【分类号】：TV213.4
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本文编号：1523193