| 太行山山前平原土壤有效水动态分析 |
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| 引用本文： | 蔡燕,王会肖.太行山山前平原土壤有效水动态分析[J].中国农业气象,2009,30(3):313-317,322. |
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| 作者姓名： | 蔡燕 王会肖 |
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| 作者单位： | 水沙科学教育部重点实验室/北京师范大学水科学研究院,北京,100875 |
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| 基金项目： | 高等学校博士学科点专项科研基金资助课题"土壤-作物系统水分过程与节水调控机制研究"，河北省节水农业重点实验室开放基金项目 |
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| 摘 要： | 利用栾城试验站1998—2002年的降水和土壤水观测资料，探讨太行山山前平原的土壤有效水量和土壤水有效性的时间变化特征。结果表明，①土壤有效水量年内变化明显，受降水影响显著；年际变化呈减少趋势，秋季变化幅度最大；作物的主要供水层下移。②作物根系层土壤水的总体有效性在全年基本为“中效”；在冬小麦生育期，深层的土壤水逐渐转为“难效”，经过雨季能基本得到缓解；自1998年至2001年土壤水分有效性等级由浅层至深层依次降低。
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| 关 键 词： | 太行山山前平原 土壤有效水量 土壤水有效性 时间动态特征 |
Analysis of Available Soil Moisture Changes in Taihang Mountain Piedmont Plain |
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| CAI Yan,WANG Hui-xiao.Analysis of Available Soil Moisture Changes in Taihang Mountain Piedmont Plain[J].Chinese Journal of Agrometeorology,2009,30(3):313-317,322. |
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| Authors: | CAI Yan WANG Hui-xiao |
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| Institution: | ( Key Laboratory for Water and Sediment Sciences, Ministry of Education/College of Water Sciences, Beijing Normal University, Beijing 100875, China) |
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| Abstract: | Based on precipitation and soil moisture data from 1998 to 2002 in Luancheng agricultural observation station, the temporal change characteristics of the available soil moisture quantity and soil water availability in the Taihang piedmont plain were analyzed. The result showed that the available soil water quantity varied and was affected by precipitation apparently during a year. The annual variation in quantity showed a decreased trend with a most extent in autumn. The soil layer of water supply for crop deepened. The total availability of soil water was generally at the mid-available state during a year, while the soil water of deeper layers gradually converted to a hard available state during the growing period of winter wheat and could be alleviated through rain season. The annual soil moisture availability declined from lower layers to deeper layers. |
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| Keywords: | Taihang Mountain piedmont plain Available soil water Soil water availability Temporal change characteristics |
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