| 高寒沙区植被恢复过程中表层土壤因子的变化规律 |
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| 引用本文： | 刘君梅,王学全,刘丽颖,杨德福. 高寒沙区植被恢复过程中表层土壤因子的变化规律[J]. 东北林业大学学报, 2011, 39(8): 47-49,60 |
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| 作者姓名： | 刘君梅 王学全 刘丽颖 杨德福 |
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| 作者单位： | 中国林业科学研究院荒漠化研究所,北京,100091;青海省沙珠玉治沙站 |
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| 基金项目： | 国家“十一五”林业科技支撑项目,中国林业科学研究院重点项目 |
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| 摘 要： | 对青海沙珠玉地区人工植被恢复过程中表层土壤因子性状的研究表明:人工植被恢复对干旱区土壤有很好的改良效果。随着流动沙丘被固定,土壤逐渐出现结皮层,颗粒组成中砂粒质量分数逐渐降低,粉粒质量分数增加,土壤有机质和全氮质量分数逐渐增加,pH值有降低的趋势。由线性回归分析可看出,表层土壤中有机质和全氮质量分数与砂粒质量分数呈显著负相关,而与粉粒质量分数呈显著正相关。干旱沙区的土壤要恢复到自然的水平需要相当长的时间,因此,对于荒漠化地区土壤保护是一个极为重要的问题。
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| 关 键 词： | 植被恢复 土壤因子 相关性 |
Regularity of Soil Factors in Surface Level in the Process of Vegetation Restoration in Sandy Lands of Qinghai Plateau |
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| Liu Junmei,Wang Xuequan,Liu LiyingInstitute of Desertification Studies,Research Institute of Forestry,Beijing,P.R.China;Yang Defu. Regularity of Soil Factors in Surface Level in the Process of Vegetation Restoration in Sandy Lands of Qinghai Plateau[J]. Journal of Northeast Forestry University, 2011, 39(8): 47-49,60 |
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| Authors: | Liu Junmei,Wang Xuequan,Liu LiyingInstitute of Desertification Studies,Research Institute of Forestry,Beijing,P.R.China Yang Defu |
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| Affiliation: | Liu Junmei,Wang Xuequan,Liu Liying(Institute of Desertification Studies,Research Institute of Forestry,Beijing 100091,P.R.China);Yang Defu(Shazhuyu Desert Control Station in Qinghai) |
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| Abstract: | A study was conducted to analyze the surface soil factors in different development stages after artificial vegetation restoration in Shazhuyu Desert Control Station in Qinghai.Result shows that artificial vegetation restoration has better impact on the soil in the arid areas.With the sand dunes being fixed,soil microbiotic crust appeared;soil sand content reduced gradually,but silt content increased;contents of organic matter and total nitrogen gradually increased;soil pH decreased.Organic matter content and total nitrogen content have a significant negative correlation with sand content,but have a significant positive correlation with silt content.It will take quite a long time to make sandy soil return to its natural level;therefore,soil conservation is a very important issue in desertification areas. |
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| Keywords: | Vegetation restoration Soil factors Correlations |
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