Towards better water security in north China
文献类型：会议论文
| 作者 | Zhang L.; Xia J.; Zhang L. |
| 出版日期 | 2007 |
| 关键词 | water security north china integrated catchment management water use efficiency sustainable development use efficiency resources management plain challenge barriers systems |
| 页码 | 233-247 |
| 英文摘要 | Water shortages and related environmental degradation in North China are major issues facing the country. As runoff from the mountainous parts of the region steadily decrease and water resources become overcommitted, serious water and environmental problems have resulted. These include drying-up of rivers, decline in groundwater levels, degradation of lakes and wetlands, and water Pollution. Thus, 4000km of the lower reaches of the Hai River - some 40% of its length - has experienced zero nows and, as result, parts of this river have become an ephemeral stream. The area of wetland within the Basin has decreased from 10,000km(2) at the beginning of 1950s to 1,000km(2) at present. Over-extraction of groundwater occurs beneath 70% of the North China Plain, with the total groundwater over-extraction estimated at 90 billion m(3). Thus, problems of water shortage and related environmental issues in North China have become the most significant limiting factors affecting sustainable development in this important region of China. This paper addresses the water security issues facing North China in the 21st Century using the Hai River basin as an example. We describe hydrologic cycles under changing environments, water-saving agriculture, assessment of water resource security, and efforts towards achieving integrated catchment management. |
| 收录类别 | CPCI |
| 会议录出版者 | Springer |
| 语种 | 英语 |
| ISBN号 | 978-1-4020-5590-4 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/25330]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zhang L.,Xia J.,Zhang L.. Towards better water security in north China[C]. 见:. |
入库方式： OAI收割
来源：地理科学与资源研究所
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