干旱区生态环境知识资源中心(Arid): 50a来洮河流域降水径流变化趋势分析

Arid

	50a来洮河流域降水径流变化趋势分析
其他题名	Trend Analysis of the Precipitation and Runoff in the Taohe River Watershed during the Past 50 Years
	张济世 1; 康尔泗 1; 蓝永超 1; 陈仁升 1; 姚尽忠 1; 蒲瑞丰 1; 陈满祥 2
来源期刊	冰川冻土
ISSN	1000-0240
出版年	2003
卷号	25 期号:1 页码:77-82
中文摘要	洮河流域40多年水文实测资料分析表明，由于受气候变化及人类活动影响。流域降水和径流特征发生了明显变化，降水与径流总体呈下降趋势，其下降的线性斜率分别为-0.86--1.34mm·a^-1和-1.57--3.36m^3· s-1·a^-1；而气温呈缓慢上升趋势，其上升的线性斜率为0.02℃·a^-1，降水的减少和温度的升高已经导致甘南草原荒漠化，使许多湿地和湖泊干涸；径流的减少和温度增加在近20a来有进一步加剧的趋势。
英文摘要	Analyzing the past 50 a hydrological and meteorological date in the Taohe River basin, it is clear that precipitation and runoff decreases and temperature slowly rises. In the past 50 precipitation decreased 43-67 mm, runoff decreased 78.5-168m~3·s~(-1)·~(-1), and temperature increased 1℃. This trend was signification in the 1980s and the 1990s. Precipitation decreased 10.2% from the 1980s to the 1990s, runoff decreased 33%-36% from the 1980s to the 1990s, the decreasing range of runoff was 3 times larger than that of precipitation. Since the 1960s temperature in the upper reach has slowly increased. Temperature increased 0.5℃ from the 1970s to the 1980s, and 0.6℃ form the 1980s to the 1990s. Decrease in precipitation and runoff mainly occurs in May～October, and in November ～ April the decrease range is very small. However, temperature variation trend is opposite to precipitation and runoff. Increase in temperature mainly occurs in November ～ April, and in May ～October, the increase range is very small. In the basin, multi-annual average total surface ground water resources is 47.1610~8m~3·a~(-1). In the 1950s the annual average total surface ground water resources was 46.2510~8m~3·a~(-1) in the 1960s it was 59.0510~8m~3·a(-1), in the 1970s it was 47.5110~8m~3·a(-1), in the 1980s it was 49.4210~8m~3·a(-1), and in the 1990s it was 33.2*10~8m~3·a(-1). Its decreasing amplitude was 32.8% form the 1980s to the 1990s. From 1996 to 2000 the decrease speeds up, resulting in the annual average total surface ground water resources equivalent to 36.6% of the multi-annual average. The decrease of precipitation and runoff and the increase of temperature cause drought and desertification, together with disappearance of manywetlands or lakes in Gannan Grassland. This variation also worsens environment, and will sprease to the design of Taohe River Water Diversion Irrigations Project. Public will doubt the feasibility of the Taohe River Water Diverstion Irrigations Project. So it is necessary to enhance the study of the impact of climate change on water resources, and to present scientific measures to the project.
中文关键词	降水径流 ; 统计分析 ; 洮河流域 ; 气候变化 ; 人类活动 ; 气温
英文关键词	precipitation and runoff variation trend statistical analysis Taohe River basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:1282093
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/203813
作者单位	1.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 2.甘肃省水文水资源勘测局, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	张济世,康尔泗,蓝永超,等. 50a来洮河流域降水径流变化趋势分析[J]. 中国科学院西北生态环境资源研究院,2003,25(1):77-82.
APA	张济世.,康尔泗.,蓝永超.,陈仁升.,姚尽忠.,...&陈满祥.(2003).50a来洮河流域降水径流变化趋势分析.冰川冻土,25(1),77-82.
MLA	张济世,et al."50a来洮河流域降水径流变化趋势分析".冰川冻土 25.1(2003):77-82.