| 刘智勇,张鑫,李小冰.气候变化对秃尾河流域径流量的影响[J].干旱地区农业研究,2011,29(6):184~190 |
| 气候变化对秃尾河流域径流量的影响 |
| Impact of climate change on natural runoff in Tuweihe basin |
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| DOI：10.7606/j.issn.1000-7601.2011.06.34 |
| 中文关键词: 气温 降水 径流量 秃尾河 |
| 英文关键词:temperature precipitation runoff Tuweihe |
| 基金项目:国家高技术研究发展计划(“863”计划)项目(14110209)；国家重大科技支撑计划项目(2006BAD11B05)；西北农林科技大学博士科研启动基金项目(01140504);西北农林科技大学科研专项(08080230) |
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| 中文摘要: |
| 为探讨秃尾河流域径流量对气候变化的关系,利用秃尾河流域1970~2005年36 a来的气温、降水和天然径流量数据,对该流域气温、降水和径流量年际和季节性的变化特征及趋势进行了分析,研究了气候因子与径流量的相关性。研究结果表明:秃尾河流域年平均气温呈现明显升高趋势,以冬季升温为主;年降水表现为缓慢减少趋势,降水减少主要表现在夏秋季节;年径流量表现为显著减少趋势,且以春夏季节减少为主;年径流量与流域年平均气温呈显著的负相关性,而与年降水呈相对较强正相关性,同时径流量与气温、降水间的相关性在不同季节及中下游表现不同。 |
| 英文摘要: |
| Based on the observation data from 1970~2005 of temperature，precipitation and runoff of Tuweihe
basin，we analyzed the inter annual and seasonal characteristics and trends of precipitation and runoff variation in the wa-tershed of Tuweihe. The Pearson correlation method was used to analyze the correlation of temperature and precipitation. The results showed that: As the global warming, there was a significant increasing trend in the annual mean temperature, which primarily took place in winter; The anmual precipitation experienced a weakly decreasing trend and the decline in summer and autumn was more obvious; The annual runoff of Tuweihe basin indicated a siqnificant and continuous de-scend during the past 36 years and the descend mainly happened in summer and autumn; There was a significantly nega-tive correlation between annual runoff and temperature while there was a weakly positive correlation between annual runoff and precipitation of the basin. The correlation between temperature，precipitation and runoff varied with different sections of Tuweihe and different seasons. |
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