干旱区生态环境知识资源中心(Arid): 甘肃省近43年降水资源变化对农业的影响

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	甘肃省近43年降水资源变化对农业的影响
其他题名	Effects of Precipitation Resources Variation on Agriculture in Gansu Province in Recent 43 Years
	瞿汶; 刘德祥; 赵红岩; 郭俊琴
ISSN	1001-4675
出版年	2007
卷号	24 期号:1 页码:56-60
中文摘要	选取甘肃省63个地面测站降水量资料，利用对比分析方法，研究了甘肃省降水资源变化特征及其对农业的影响。结果表明：年降水量，越冬作物生育期、春小麦生育期和秋作物生育期的降水量19872003年与19611986年相比，时空分布发生了明显变化，河西中东部为增多趋势，河东为减少趋势，分界线与黄河走向基本一致：河东年降水量减少的幅度和速率比河西增加的幅度和速率都大，河东气候向暖干化发展的趋势加快；旱作区降水量减少，极端干旱事件频繁发生，可利用降水资源更加紧缺，对农业可持续发展的负面影响明显增大。
英文摘要	Gansu Province is located in an inland, the terrain in the province is complicated, and the climatic difference is significant. It is the arid climate in Hexi Corridor, monsoon climate in the region east from the Yellow River, and high-cold climate in the Gannan Plateau and Qilian Mountains. The province covers the humid, semi-humid, semiarid, arid and extremely arid climatic zones. In this paper, the effects of precipitation resources variation on agriculture in Gansu Province are lucubrated based on the precipitation data observed by 63 meteorological stations in the province. The results show that the spatiotemporal distribution of annual precipitation and the precipitation in growing seasons of winter crops, spring wheat and autumn crops changed significantly in the period of 1987 - 2003 compared with that in the period of 1961 - 1986, that is the precipitation increased in the east Hexi Corridor but decreased in the region east from the Yellow River, and the boundary accorded basically with the Yellow River. The extent and speed of annual precipitation decrease in the region east from the Yellow River is higher than that of precipitation increase in Hexi Corridor. The climate in the region east from the Yellow River trends rapidly towards warming-drying pattern. In dry farming areas, the precipitation is in a decrease trend, extremely drought events occur frequently, the shortage of available water resources becomes more serious, and the sustainable agricultural development is restricted by the shortage of water resources.
中文关键词	降水量 ; 水资源 ; 时空分布 ; 农业 ; 甘肃
英文关键词	Gansu Province precipitation resources variation effect agriculture.
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:2734962
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/220963
作者单位	兰州区域气候中心, 兰州, 甘肃 730020, 中国
推荐引用方式 GB/T 7714	瞿汶,刘德祥,赵红岩,等. 甘肃省近43年降水资源变化对农业的影响[J],2007,24(1):56-60.
APA	瞿汶,刘德祥,赵红岩,&郭俊琴.(2007).甘肃省近43年降水资源变化对农业的影响.,24(1),56-60.
MLA	瞿汶,et al."甘肃省近43年降水资源变化对农业的影响".24.1(2007):56-60.