| 黄土高原坡地封闭式水平带侧柏人工林土壤肥力研究 |
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| 作者姓名： | 董建辉 薛泉宏 |
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| 作者单位： | 陕西职业技术学院 西安长安710100
(董建辉)，西北农林科技大学 陕西杨凌712100(薛泉宏) |
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| 摘 要： | 研究了黄土高原陡坡封闭式水平带侧柏人工林的土壤肥力变化。结果表明:在整地、抚育及侧柏生长的综合作用下,陡坡水平带内侧柏根区80cm土层土壤有机质、全氮、速效氮、速效钾及阳离子代换量较无林地分别提高141.0%、18.8%、97.8%及48.0%,pH值降低4.7%,碳酸钙在0￣40cm土层降低6.3%￣16.8%,在41￣80cm提高11.6%￣24.0%。
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| 关 键 词： | 陡坡造林 人工林土壤肥力 侧柏人工林 |
The Investigation on Soil Fertility of Platycladus Orientalis Plantations on Horizontal Area of Steep Slope on Loess PlateauL |
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| Authors: | Dong Jianhui Xue Quanhong |
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| Abstract: | It was investigated that Platycladus orientalis plantations soil fertility changing of the horizontal zone of steep slope on Loess Plateau. The results indicated that: in the 80cm soil matter, total nitrogen, available nitrogen, available potassium and the cation exchange capacity were enhanced by 141.0%, 18.8%, 20.9% and 48.0%, respectively, and pH decreased by 4.7%. In the soil horizon of 0~40cm and 41~80cm, calcium carbonate decreased by 6.3%~16.8% and enhanced by 11.6%~24.0%, respectively too. |
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| Keywords: | Afforestation on steep slope Plantations Soil fertility P orientalis plantations |
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