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海霞,李伟峰,王朝,周伟奇,韩立建,钱雨果.京津冀城市群用水效率及其与城市化水平的关系.生态学报,2018,38(12):4245~4256 本文二维码信息
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京津冀城市群用水效率及其与城市化水平的关系
Interactions between water use efficiency and urbanization level in the Beijing-Tianjin-Hebei megaregion, China
投稿时间:2018-01-25  修订日期:2018-04-17
DOI: 10.5846/stxb201801250198
关键词京津冀城市群  用水效率  城市化水平  超效率数据包络模型  相关性分析
Key WordsBeijing-Tianjin-Hebei megaregion  water use efficiency  urbanization level  super efficiency data envelopment model  correlation analysis
基金项目国家自然科学基金重大项目(41590841);国家重点研发计划(2017YFC0505701)
作者单位E-mail
海霞 中国科学院生态环境研究中心 城市与区域生态国家重点实验室, 北京 100085
中国科学院大学, 北京 100049 
 
李伟峰 中国科学院生态环境研究中心 城市与区域生态国家重点实验室, 北京 100085 li.wf@rcees.ac.cn 
王朝 中国科学院生态环境研究中心 城市与区域生态国家重点实验室, 北京 100085
中国科学院大学, 北京 100049 
 
周伟奇 中国科学院生态环境研究中心 城市与区域生态国家重点实验室, 北京 100085  
韩立建 中国科学院生态环境研究中心 城市与区域生态国家重点实验室, 北京 100085  
钱雨果 中国科学院生态环境研究中心 城市与区域生态国家重点实验室, 北京 100085  
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摘要:
深入分析京津冀城市群用水效率与城市化水平的相互关系,揭示不同城市城市化水平对水资源利用效率的影响,有助于缓解水资源短缺问题。结合超效率数据包络模型,定量分析了京津冀城市群不同行业的用水效率,从人口、经济、社会与土地等不同城市化角度,全面分析了城市发展水平与生活、工业、农业三大行业用水效率之间的相互关系。主要结论为:①2006-2015年,京津冀城市群生活和工业用水效率总体上略微下降,而农业用水效率明显上升;不同城市之间存在明显差别,唐山、衡水与沧州市各行业用水效率均较高,邯郸和邢台市各行业用水效率均偏低。②城市发展水平对不同行业用水效率的影响存在明显差异。城市化水平的提升可以显著提高生活用水效率,但对工业和农业用水效率具有不同程度的负向影响。综合用水效率仅受到经济城市化的显著影响,相关系数达0.19,表明提高用水效率的关键是进一步调整经济产业结构。③城市化水平与用水效率梯度的匹配状态较差。一方面,京津冀13个城市中达到匹配的城市仅有4个,占京津冀城市总数的30.77%,匹配程度较低。另一方面,不存在城市化水平和用水效率双高型的城市,匹配层次较低。综上所述,针对京津冀城市化发展与用水效率的失衡关系,应审视水资源投入产出结构并尝试行业联动等节水发展模式。
Abstract:
To reveal the the contradictions between sustainable development and water availability, it is necessary to conduct in-depth analysis of the interactions between urbanization level and water use efficiency between cities in Beijing-Tianjin-Hebei megaregion. In this study, we took the Beijing-Tianjin-Hebei megaregion as a case and used the super efficiency data envelopment model to evaluate water use efficiency during the period of 2006-2015, and then explored the interactions between urbanization level and water use efficiency. The main results were: (1) from 2006 to 2015, the domestic and industrial water use efficiency decreased slightly, whereas the efficiency of agricultural water use increased significantly;There existed obvious difference on water use efficiency between cities, i.e.,water use efficiency of all industries were high in Tangshan, Hengshui, and Cangzhou, but low in Xingtai and Handan; (2) the impacts of urbanization level on water use efficiency varied between cities. Urbanization development could significantly increase the domestic water use efficiency, while it had different extent of negative impacts on industrial and agricultural water use efficiency.The comprehensive water use efficiency was only significantly related with economic urbanization level(R2=0.19), indicating that further adjustment of economic structure would be effective to improve water use efficiency;(3) overall, by the comparison of urbanization level and water use efficiency, most cities didn't match. There were only 4 matching cities, accounting for 30.77% of the numbers of cities in Beijing-Tianjin-Hebei megaregion. Moreover, there was no city with both high urbanization level and high water use efficiency, indicated that it was essential to improve the matching status. Regarding the unbalanced interactions between urbanization levels and water use efficiencies, more attention should be paid to promote the water use efficiency, such as optimize the input-output structure and explore some water saving development models.
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