| 冀西北高原土壤冻融特征研究 |
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| 引用本文： | 王新路,冯丽宵,赵光辉,张立峰.冀西北高原土壤冻融特征研究[J].土壤通报,2011(3). |
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| 作者姓名： | 王新路 冯丽宵 赵光辉 张立峰 |
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| 作者单位： | 河北农业大学农学院; |
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| 基金项目： | 国家“十一五”科技支撑计划(2006BAD15B05)资助 |
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| 摘 要： | 为明确冀西北高原寒季土壤冻融时空范围及冻融前后储水量变化,通过设计控制性田区,采用时域反射仪(TDR)进行了定位连续观测。结果表明:冀西北高原区冻土深度为200 cm;0~200 cm土体结冻期持续约106 d,融冻期持续35 d,土体融冻速率大于冻结速率。随土层加深,土壤稳定冻结期缩短。封冻期间土体少量耗水,土壤失水主要发生在0~40cm土层。冻结过程有利于保持土壤水分,利于春季植被返青。研究结果为冀西北高原土壤水资源保持、环境保护及植被高效生产提供理论依据。
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| 关 键 词： | 冀西北高原 季节性冻土 土壤水分 冻融作用 |
Characteristics of Soil Freezing and Thawing in the North-western Plateau of Hebei |
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| WANG Xin-lu,FENG Li-xiao,ZHAO Guasng-hui,ZHANG Li-feng.Characteristics of Soil Freezing and Thawing in the North-western Plateau of Hebei[J].Chinese Journal of Soil Science,2011(3). |
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| Authors: | WANG Xin-lu FENG Li-xiao ZHAO Guasng-hui ZHANG Li-feng |
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| Institution: | WANG Xin-lu,FENG Li-xiao,ZHAO Guasng-hui,ZHANG Li-feng (Agricultural Univeisity of Hebei,College of Agronomy,Baoding 071000,China) |
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| Abstract: | To definitude the freezing-thawing spatial and temporal scales and the variations of water storage between before and after freezing-thawing in the soil of the North-western Plateau of Hebei in cold season,time domain reflectometry(TDR) was adopted for continuous observation of the located fields by comparison of the control.The results showed that the soil permafrost depth in the North-western Plateau of Hebei was 200 cm.As for 0-200 cm soil,the freezing period lasted about 106 days,and freezing-thawing pe... |
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| Keywords: | North-western Plateau of Hebei Seasonal frozen soil Soil moisture Freezing-thawing |
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