干旱区生态环境知识资源中心(Arid): 武威绿洲农业开发对民勤绿洲来水量的影响----基于水足迹的视角

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	武威绿洲农业开发对民勤绿洲来水量的影响----基于水足迹的视角
其他题名	Impacts of Agricultural Development in the Wuwei Oasis on Water Resources in the Minqin Oasis in the Lower Reaches: Based on Water Footprint
	李泽红; 董锁成
来源期刊	资源科学
ISSN	1007-7588
出版年	2011
卷号	33 期号:1 页码:86-91
中文摘要	基于历史观测数据统计分析了1956年-2003年石羊河上游天然来水量与下游民勤绿洲来水量变化趋势 , 采用生产法计算了1950年-2006年武威绿洲农业水足迹, 定量揭示了石羊河中游武威绿洲农业开发对区域水资源的真实占用及其对下游民勤绿洲来水量的影响. 研究结果表明: ①由于石羊河中游武威绿洲人类活动加剧, 下游民勤绿洲来水量呈减少趋势; ②中游武威绿洲农业水足迹呈快速上升趋势, 粮食作物水足迹占最大比重; ③中游武威绿洲农业水足迹与下游民勤绿洲来水量呈显著负相关关系, 中游农业水足迹每提高110~8m~3, 下游来水量将减少0.254310~8m~3; 中游粮食作物水足迹每提高110~8m~3, 下游来水量将减少0.502110~8m~3, 中游武威绿洲农业开发是下游民勤绿洲来水量减少的最重要人文活动, 粮食作物种植规模的扩大对下游来水量的影响很大; ④通过控制农业生产规模, 调整农业内部结构, 降低单位农产品的虚拟水量, 进而控制中游武威绿洲农业水足迹增长趋势是缓解下游民勤绿洲生态恶化的重要手段
英文摘要	The authors introduced a concept of water footprint and performed an integrative calculation of the real water occupation for agricultural development in the Wuwei oasis in the middle reaches of the Shiyang River basin. We comprehensively analyzed the impacts of the agricultural development on the water resources in the Minqin oasis of the lower reaches of the Shiyang River basin, and formulated future strategies for sustainable development of agriculture in the oasis areas. Results show that the water amount to the lower reaches of the Shiyang River had positive linear correlation of a determination coefficient(R~2)of 0.82 with the natural water amount from the upper reaches during the period 1956-1973, when only natural factors causing the decrease in water amount to the Minqin oasis were accounted for. However, the marked linear correlation had been completely changed since 1973 due to water resources utilization by intensified human activities in the middle reaches in the Wuwei oasis. The agricultural water footprint of the Wuwei oasis increased rapidly from 158106m3 in the year 1950 to 1 598106m3 in the year 2006.In particular, the water footprint of food crops accounted for the highest proportion of agricultural water footprints. The increased agricultural water footprint in the Wuwei oasis showed significant negative linear correlation of a R~2 of 0.7983 with the decreased water amount to the Minqin oasis. Preliminary analysis indicate that an increase in agricultural water footprint of 100106m3 in the Wuwei oasis would cause a decrease in water amount of 25.43106m3 in the Minqin oasis across the past 40 years. On the other hand, the increased water footprint of food crops in the Wuwei oasis showed significant negative linear correlation of a R~2of 0.81 with the decreased water amount to the Minqin oasis. It was also indicated that an increase in agricultural water footprint of 100106 m3 in the Wuwei oasis would be likely to cause a decrease in water amount of 50.21106m3 in the Minqin oasis over the study period. Therefore, actions to control the scale of agricultural production, adjust the structure of agriculture, reduce the virtual water of agricultural products, and change the growth trend of agricultural water footprint in the Wuwei oasis should be taken to mitigate environmental degradation across the Minqin oasis
中文关键词	农业开发 ; 水足迹 ; 石羊河流域 ; 武威绿洲 ; 民勤绿洲
英文关键词	Agricultural development Shiyang River basin Water footprint Wuwei oasis Minqin oasis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENGINEERING MULTIDISCIPLINARY
WOS研究方向	Engineering
CSCD记录号	CSCD:4123963
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227637
作者单位	中国科学院地理科学与资源研究所, 北京 100101, 中国
推荐引用方式 GB/T 7714	李泽红,董锁成. 武威绿洲农业开发对民勤绿洲来水量的影响----基于水足迹的视角[J]. 中国科学院地理科学与资源研究所,2011,33(1):86-91.
APA	李泽红,&董锁成.(2011).武威绿洲农业开发对民勤绿洲来水量的影响----基于水足迹的视角.资源科学,33(1),86-91.
MLA	李泽红,et al."武威绿洲农业开发对民勤绿洲来水量的影响----基于水足迹的视角".资源科学 33.1(2011):86-91.