| 黄土高原北部河北杨林的土壤水分特征 |
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| 引用本文： | 李洪建,王孟本,柴宝峰.黄土高原北部河北杨林的土壤水分特征[J].山地学报,2002,20(5):606-610. |
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| 作者姓名： | 李洪建 王孟本 柴宝峰 |
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| 作者单位： | 山西大学黄土高原研究所,山西,太原,030006 |
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| 摘 要： | 以河北杨林为研究对象，在对其土壤水分进行7a定位观测的基础上，对其特点进行全面分析。结果表明：河北杨林土壤水分动态的周年变化规律主要受降水及其分配特点和生长期初土壤水分含量的影响。0cm-300cm深度内，生长期土层内土壤水分的年平均值多数年在64g/kg左右；特旱年仅50g/kg；特涝年也只有76g/kg；土壤水分条件较差；多数年份土壤水分的基本平衡；特旱、特涝年份土壤水分大量亏缺、积累，其值均达150mm以上。0cm-300cm深度内土壤水分剖面的垂直分布自上而下分为活跃层、过渡层和稳定层，但各层的厚度变化受年降水量的影响较大；土壤含水量的平均值随深度增加而减少，从72g/kg-57g/kg。除特涝年份的生长季中后期外，生长期内的北杨有较大的贮水库容，有利于土壤水的年际调节。
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| 关 键 词： | 黄土高原 河北杨 土壤水分 周年变化 垂直分层 年际调节 |
| 文章编号： | 1008-2786(2002)05-0606-05 |
| 修稿时间： | 2002年4月1日 |
A Study on the Soil Water Characteristics of Populus Hebeinsis Plantation on Northern Loess Plateau |
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| LI Hong jian,WANG Meng ben and CHAI Bao feng.A Study on the Soil Water Characteristics of Populus Hebeinsis Plantation on Northern Loess Plateau[J].Journal of Mountain Research,2002,20(5):606-610. |
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| Authors: | LI Hong jian WANG Meng ben and CHAI Bao feng |
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| Abstract: | Based on the data of seven year field measurement, the paper deals with the characteristics of soil moisture of Populus hopeiensis plantation. The results showed that the annual changing regularity of soil moisture of P. hopeiensis plantation depended mainly on both annual precipitation and its distribution as well as soil moisture storage amount in the beginning of growing season. The cycle level of soil moisture from extra dry year to extra wet year was from 50 g/kg to 76 g/kg, and the mean value was about 64 g/kg. The soil water content was in balance in most of the years, but was in a greatly deficit in extra dry year and a considerably surplus in extra wet year reaching as much as 150mm. According to the vertical profile of soil water, the distribution of soil moisture were divided from surface to bottom into three layers: active layer, transitive layer and stable layer. The thickness of the each layer changed greatly from year to year. The available water storage amount in the plantation was lower in the whole growing season. The plantation suffered from water stress slightly in most of the year, and suffered from water stress moderately about a half period of time from May to July, and had a high capacity for raining water storage. But this kind of situation provided with a favorable condition for soil water regularity between years. |
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| Keywords: | Populus hopeiensis plantation soil water dynastic distribution of vertical profile water regularity between years |
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