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广东省区域空间结构调整优化设想 被引量:7
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作者 蔡人群 林幸青 许自策 《经济地理》 CSSCI 北大核心 2007年第1期68-73,共6页
生态—经济功能区不同于传统的经济区,主要目的在于协调区域经济发展与生态环境保护的关系,对全国各地优化区域空间结构,协调地域经济发展具有重要意义,是地理学界必须高度关注的新课题。广东省目前把全省划分为珠江三角洲、东翼沿海、... 生态—经济功能区不同于传统的经济区,主要目的在于协调区域经济发展与生态环境保护的关系,对全国各地优化区域空间结构,协调地域经济发展具有重要意义,是地理学界必须高度关注的新课题。广东省目前把全省划分为珠江三角洲、东翼沿海、西翼沿海、北部山区四大经济区域,对区域空间规划布局,制订政策具有指导作用,但新时期形势发展也显示这种划分的不足一面,有进一步优化必要。文章在分析现行省内经济区域划分存在问题基础上,认为省内区域空间结构调整势在必行,按照“中心城市带动,生态环境协调,突出区域主导功能,河流流域上下游协调,保持县级行政界域完整”五个划分原则,提出广东区域空间结构调整优化,建立省内生态—经济功能区两个设想方案。 展开更多
关键词 广东省 空间结构 优化 生态-经济功能区
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The changes of renewable water resources in China during 1956 –2010 被引量:5
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作者 LI YuanYuan CAO JianTing +1 位作者 SHEN FuXin XIA Jun 《Science China Earth Sciences》 SCIE EI CAS 2014年第8期1825-1833,共9页
Water is a critical natural resource upon which all social and economic activities and ecosystem functions depend. With a surprising social and economic development in the past decades, water has become an important c... Water is a critical natural resource upon which all social and economic activities and ecosystem functions depend. With a surprising social and economic development in the past decades, water has become an important constraint for China's sustainable development, and a matter concerning economic security, ecological security and national security of the country. Understanding the changes of water resources is greatly helpful in analyzing the impacts of climatic change, formulating plans for utilization and protection of water resources, and making water resource decisions. Based on China's national water resources assessment, the Mann-Kendall's test, and Morlet wavelet, we analyzed the changing trends and periods of China's renewable water resources during 1956–2010. The results as following:(1) There is no significant change trend of water resources on the countrywide scale during the period 1956–2010, the total water resources show a slight increasing trend, and the national annual average water resources during the period 1991–2010 increased by 1% relative to that of the period 1961–1990.(2) The changes of water resources in different level-I water resource regions vary significantly. Annual average water resources of the Haihe River and Yellow River regions in the northern China decreased 19% and 17% respectively in the past 20 years. Water resource increased in Southern and Northwestern rivers regions, particularly in the Northwest rivers region, with the increasing amplitude by nearly 10% in the past 20 years.(3) The inter-annual variation of national water resource became larger in the past 20 years, as compared with that of the period 1961–1990. The coefficients of water resource variation increased in Northwestern and Southwestern rivers regions, while the inter-annual variation tended to decrease in the Haihe and the Yellow River regions where significant decline of water resources happened.(4) A 14-year quasi-periodicity of the national water resource variation was detected, overlapping with various periodicities of water resources of different level-I water resource regions. Remarkable uniformity exists between the first or secondary primary periodicity of water resource variation in adjacent level-I water resource regions. 展开更多
关键词 water resources ANOMALY variation coefficient Mann-Kendall test Morletwavelet
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