干旱区生态环境知识资源中心(Arid): 白银市降水气候资源评估

Arid

	白银市降水气候资源评估
其他题名	Precipitation resources assessment for Baiyin
	陈少勇 1; 韩通 2; 乔立 2
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2011
卷号	25 期号:11 页码:79-85
中文摘要	利用白银市及周边19个气象站和10个水文站的降水资料,分析了白银市降水气候资源的状况。结果表明:1)白银市年降水量分布从南向北递减,南北气候差异大。受地形影响,有一条干舌伸到境内,与周边地区相比,降水量偏少70～150mm。根据250mm的等值线,景泰县、白银区、靖远县西部为干旱区,会宁县、靖远东部、平川区为半干旱区。2)作物生长期4-10月降水量占年降水的92%～96%,其空间分布与年降水一致。3)在80%的保证率下,景泰县中东部降水140mm,西部的老虎山区降水170mm,白银区150mm,靖远县北部150mm,南部170mm,平川区为170mm,会宁县北部260mm,南部300mm。4)以生长期降水量300mm的保证率将全市水资源从南向北划分为四个区:水资源可用区、短缺区、紧缺区、稀有区,其干旱风险分别为20%、 35%、65%、90%。5)近50年白银市降水呈减少趋势,南部更加显著,未来降水偏少的趋势还降持续。
英文摘要	Using the precipitation of 19 observational stations and 10 hydrographical stations in the period of 1957 to 2006 in Baiyin and peripheral areas,the precipitation resources for 50 years were analyzed by PearsonⅢ distribution,the wavelet analysis method and so on．The results indicated:(1)The annual precipitation decreased progressively from south to the north．For the terrain influence,a tongue like dry was extended within the boundaries,compared with the peripheral locality,the precipitation was less than 70～150mm．According to 250 mm equivalent lines,west Jingtai County,the Baiyin area,Jingyuan County were the arid area,Huining County,eastern part of Tinyuas,the flat country area were semi-arid regions．(2)Plant Growth Period from April to October precipitation occupied 92%～96%of the annual precipitation,its spatial distribution was consistent with the annual precipitation．(3)Under 80%guarantee rate,in eastern part of Jingtai County precipitation was 140 mm,in western Tiger mountainous area precipitation is 170 mm,in Baiyin area 150 mm,north Jingyuan County 150 mm,south 170 mm,the Pingchuan country 170 mm,north Huining County 260 mm,south 300 mm．(4) Taking the Plant Growth Period precipitation 300 mm guarantees rate as the stamdards,water resources of the whole areas from the south could be divided to four areas:Water resources available area,short area,scarce area,rare area．Their arid risks respectively are 20%,35%,65%,90%．(5)Near 50 years Baiyin precipitation has assumes the reduced tendency;the south is more remarkable．In the future the precipitation reducing tendency will continues．
中文关键词	白银市 ; 降水资源 ; 评估
英文关键词	Binyin precipitation resources assessment
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:4332154
来源机构	中国气象局兰州干旱气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226641
作者单位	1.中国气象局兰州干旱气象研究所, 甘肃省干旱气候变化与减灾重点实验室;;中国气象局干旱气候变化与减灾重点开放实验室, 兰州, 甘肃 730020, 中国; 2.白银市气象局, 白银, 甘肃 730900, 中国
推荐引用方式 GB/T 7714	陈少勇,韩通,乔立. 白银市降水气候资源评估[J]. 中国气象局兰州干旱气象研究所,2011,25(11):79-85.
APA	陈少勇,韩通,&乔立.(2011).白银市降水气候资源评估.干旱区资源与环境,25(11),79-85.
MLA	陈少勇,et al."白银市降水气候资源评估".干旱区资源与环境 25.11(2011):79-85.