| 祁连山水源涵养林区降水及温度时空变化研究 |
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| 引用本文： | 金铭,车宗玺,敬文茂,赵维俊,马钰,刘思瑞.祁连山水源涵养林区降水及温度时空变化研究[J].中国沙漠,2012,32(4):1071-1076. |
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| 作者姓名： | 金铭 车宗玺 敬文茂 赵维俊 马钰 刘思瑞 |
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| 作者单位： | 1. 甘肃农业大学,甘肃兰州730070 甘肃省祁连山水源涵养林研究院,甘肃张掖734000
2. 甘肃省祁连山水源涵养林研究院,甘肃张掖,734000 |
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| 基金项目： | 甘肃省科技计划项目，甘肃省青年科技基金计划项目 |
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| 摘 要： | 研究大气降水及温度的时空变化对建立气候预警系统有重要的意义。利用气象和水文自动监测仪器沿环境梯度和植被类型对祁连山水源涵养林区温度及降水时空变化进行了动态监测。结果表明,祁连山西水林区降水呈单峰曲线型,主要集中在夏季,占全年降水的72%;在环境梯度上差异较大,表现为乔灌交错带处(3 300 m)降水为最大,交错带以下随海拔的升高降水增大,交错带以上由于降水复杂性导致随海拔的升高而减少;在年际上差异更大,2004年以前降水量随年份的增大有下降趋势,2004年以后降水量增幅较大。祁连山西水林区气温从1986年以来逐渐上升,但年均气温大多在0 ℃以下,最低为-1.33 ℃,从2003年以来气温迅速上升,年均温最高为2.5 ℃,通过研究发现24 a以来气温上升了3.83 ℃;由于气温的上升,导致土壤温度上升较快,尤其是表层和深层土壤温度上升更快,该结论与当前的众多结论是相吻合的。
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| 关 键 词： | 降水 温度 时空变化 祁连山 |
Spatiotemporal Changes of Precipitation and Temperature at Water Resources Conservation Forests Area in Qilian Mountains,China |
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| JIN Ming,CHE Zong-xi,JING Wen-mao,ZHAO Wei-jun,MA Yu,LIU Si-rui.Spatiotemporal Changes of Precipitation and Temperature at Water Resources Conservation Forests Area in Qilian Mountains,China[J].Journal of Desert Research,2012,32(4):1071-1076. |
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| Authors: | JIN Ming CHE Zong-xi JING Wen-mao ZHAO Wei-jun MA Yu LIU Si-rui |
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| Institution: | 1.Gansu Agricultural University,Lanzhou 730070,China;2.Academy of Water Resource Conservation Forests in Qilian Mountains of Gansu Province,Zhangye 734000,Gansu,China) |
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| Abstract: | Study on temporal and spatial variations of precipitation and temperature has significant meaning for the establishment of climate change early warming system.In this paper,the meteorology and hydrology automatic monitoring equipments were used to observe precipitation and temperature at the water resources conservation forests area in the Pailugou River basin in Qilian Mountains along the environmental grades and the vegetation types.Results showed that the inter-year precipitation variation in the forest area in Qilian Mountains presented a single peak curve,and it mainly took place in summer which accounting about 72% of the annual precipitation.The precipitation also showed obviously environmental grade difference,and it was the biggest at the arbor and shrub mixture area(3 300 m),and the precipitation increased with the increase of the altitude below 3 300 m but decreased with the increase of the altitude above 3 300 m.As for temporal variation,precipitation decreased before 2004 but increased significantly after 2004.The annual average temperature increased slowly since 1986 in the forest area in Qilian Mountains,and it was below 0 ℃ in the most years,and the smallest was-1.33 ℃.The annual average temperature increased sharply since 2003,and the biggest annual average temperature was 2.5 ℃.The annual average temperature increased by 3.83 ℃during the recent 24 years at the study area.Because of air temperature increase,the soil temperature increased rapidly,especially in the top and deep soil,and the conclusion was basically the same with other observation results. |
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| Keywords: | precipitation temperature temporal and spatial change Qilian Mountains |
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