| 砒砂岩地区沙棘根系改良土壤作用 |
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| 引用本文： | 何京亮,郭建英.砒砂岩地区沙棘根系改良土壤作用[J].国际沙棘研究与开发,2008,6(2):26-32. |
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| 作者姓名： | 何京亮 郭建英 |
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| 作者单位： | 北京林业大学水土保持学院,水土保持与荒漠化防治教育部重点实验室,北京,100083 |
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| 基金项目： | 晋陕蒙砒砂岩区沙棘生态工程项目 |
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| 摘 要： | 以砒砂岩区林龄为2a-8a的沙棘群落为研究对象，在野外调查与室内分析的基础上，对沙棘群落根系改良土壤的效果进行了分析。结果表明：沙棘群落的根系可快速增加土体中〉0．01mm微团粒的数量，并使土壤容重有所降低；同时明显地提高土壤中有机质、N、P、K等化学元素的含量，从而协调供应养分和水分的能力提高，改善了土壤的营养状况及结构；有效的改善了砒砂岩区的生态环境和减少了砒砂岩区的水土流失。
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| 关 键 词： | 沙棘 砒砂岩区 根系 土壤特性 |
Soil Improvement from Seabuckthorn Root in Soft Sandstone Area |
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| Authors: | He Jingliang Guo Jianying |
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| Institution: | (College of Soil and Water Conservation , Beijing Forestry University, Key Laboratory of Water ＆ Soil Conservation, Beijing , 100083) |
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| Abstract: | Based on the field investigation and indoor analysis, the soil conditions were studied with 2-year-old and 8-year-old seabuckthorn stands. The results showed that the seabuckthorn stands would increase the number of soil mieroaggregates （〉0. 01mm）, reduce the contents of soil volume weight, and improve the organic matter content and chemica elements （such as N. P, K） . Accordingly, the root of seabuckthorn stands can harmonize the soil ability to service nutrients and water, improve the soil nutrient conditions and change the soil structure; It would also accelerate the clay soil to form the accumulation, prevent soil degradation of arsenic sandstone area and protect entironment. |
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| Keywords: | seabuekthorn soft sandstone area root soil properties |
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