| 杨艳昭,封志明,刘宝勤.河西走廊地区县域农业水资源平衡问题研究[J].干旱地区农业研究,2005,(3):13~17 |
| 河西走廊地区县域农业水资源平衡问题研究 |
| Study on the agricultural water resources balance in Northwest China |
| |
| DOI：10.7606/j.issn.1000-7601.2005.03.03 |
| 中文关键词: 西北地区 水资源平衡 亏水量 |
| 英文关键词:Northwest China water balance deficit water |
| 基金项目:中国科学院知识创新重要方向项目KZCX3-SW-333 |
|
| 摘要点击次数: 0 |
| 全文下载次数: 0 |
| 中文摘要: |
| 系统分析了县域单元农业水资源平衡的层次及其计算方法,并以河西走廊地区为案例,进行了实证研究。结果表明天然状态下,河西走廊地区各个县域单元降水均不能满足各种作物的水分需求,亏水为水量平衡的首要特征,且亏水量的大小由东到西呈递增的趋势,石羊河流域、黑河流域和疏勒河流域的亏水量依次为372.10mm、472.29mm和695.79mm。 |
| 英文摘要: |
| As an important resource of agriculture, water resource exists serial problems in northwest China. In those places, the soil and water resources don't mach well and the distribution of water resource is not very suitable for agriculture. Especially In recently years, with the increasing of population and economic, the demand for water resources also increase. All of these enlarge the distance of demand and supply of water resources. It is important to study the agriculture water resources balance in northwest China. This paper systemically analysis the agriculture water resources balance in northwest China from two steps, and point out the calculation methods for both steps at the same time. At last, this paper takes Hexi corridor as the case study to analysis the water balance in northwest China. Results show that precipitation can not meet water demand of the crops is the main character in Hexi corridor. Deficit of water becomes increasing from west to east. When irrigation water is taken into account, there are some differences in those three river basins. Irrigation water can still not meet the crop water demand in Shiyang river basin, while it is a little well for Heihe basin, as for Shule basin, there still has some surplus water |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| | |