OALib Journal期刊
ISSN: 2333-9721
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塔里木河流域绿洲城镇发展与水土资源效益分析
DOI: 10.11821/xb201202002, PP. 157-168
Keywords: ESDA,塔里木河流域,绿洲城镇,水土资源效益,时空格局
Abstract:
通过GlobalMoran'sI指数和Getis-OrdGi*指数并构建协调发展度模型对塔里木河流域绿洲城镇1995、2000、2005和2008年4个时间点的城镇化水平、土地资源效益和水资源效益的集聚扩散状态及其冷热点空间格局演化与空间联动效应进行分析,得出结论受塔河流域绿洲分布、气候条件及城镇发展基础等多种因素影响,城镇化和水土资源效益空间格局表现出不尽相同的状态。①塔河流域城镇化与水土资源效益的集聚扩散状态不一致,城镇发展与自然条件相互作用的时间和力度不同决定了三者空间差异的必然性。②受城镇化所处阶段、城镇职能与主导产业的影响,各县市水土资源开发的时序不同,城镇化和水土资源效益各自的热点演化格局明显不同,区域联动效应差异显著。③城镇化与水土资源效益冷热点区域的数量结构迥异。城镇不平衡发展仍然是主导趋势,土地资源效益滞后于城镇发展,水资源效益敏感性较强。④塔河流域范围广,自然条件复杂,各二级流域城镇化与水土资源效益的差异性显著。⑤城镇化与水土资源效益协调发展度的类型主要为发展水平低和较低两种,协调发展度的空间格局相比其冷热点区域的空间格局更具稳定性,三者差异显著是协调发展度低的重要原因。
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