学术
甘肃省长江流域大（暴）雨引发泥石流危险程度评价
马鹏里[1,2] 蒲金涌[3] 辛吉武[4]
[1]中国气象局兰州干旱气象研究所,甘肃兰州730020 [2]平凉市气象局,甘肃平凉744000 [3]甘肃省天水农业气象试验站,甘肃天水741020 [4]海南省气象局,海南海口570000
摘 要:
运用甘肃省长江流域11个气象站1971-2000年30a整编气象资料及5个农业气象观测站1981-2000年1m土层内的土壤湿度资料，分析了该地大（暴）雨发生频率及大（暴）雨易发时段不同深度层次的土壤含水量、可容纳水量的变化，构建了评价当地大（暴）雨引发泥石流的评价指数。结果表明，在发生大雨时，西汉水流域的泥石流发生可能性大于白龙江流域。发生暴雨时，白龙江发生泥石流的可能性大于西汉水流域。[著者文摘]
文章出处:
《水土保持通报》-2007年27卷5期 -67-70页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1000-288X（2007）05-0067-04
Assessment of Debris Flow Induced by Heavy Rain and Rainstorm in the Yangtze Valley of Gansu Province
MA Peng-li , PU Jin-yong , XIN Ji-wu （1. Lanzhou Institute of Arid Meteorology, China Meteorological Administration, Lanzhou, Gansu 730020, China; 2. Pingliang Meteorological Bureau, Pingliang, Gansu 744000, China; 3. The Agro-meteorological Experimental Station of Tianshui , TianShui, Gansu 741020, China; 4. Hai＇ nan Meteorological Bureau, Haikou, Hai＇nan 570000, China）
Abstract:
Based on meteorological data from 11 weather stations during 1970-2000 and data of soil moisture from 5 agro-meteorological observation stations during 1981-2000, the frequency of heavy rain and storm and the variations of soil water content and potential soil water content were analyzed. The index used to assess possibility of debris flow had been created. Results showed that under heavy rain, the possibility of debris flow in Xihan River valley is greater than that in Bailong River valley, while under rainstorm, the possibility of debris in Bailong River valley is greater than that in Xihan River valley.[著者文摘]
Key words:
Gansu Province; heavy rain and rainstorm; debris flow; degree of risk
基金资助:
科技部科研院所社会公益研究项目“西北农作物对气候变化的响应及其评价方法”（2005DIB3J100）
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