| 民勤绿洲外围不同林龄人工梭梭林的土壤水分特征 |
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| 引用本文： | 朱雅娟,贾志清,刘丽颖,刘海涛.民勤绿洲外围不同林龄人工梭梭林的土壤水分特征[J].中国沙漠,2011,31(2):442-446. |
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| 作者姓名： | 朱雅娟 贾志清 刘丽颖 刘海涛 |
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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 |
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| 基金项目： | 中国林业科学研究院林业研究所重点项目(ZD200908); 国家“十一五”科技支撑计划专题(2006BAD26B0101); 国家科技支撑计划专题(2007BAD46B02-3)共同资助 |
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| 摘 要： | 2009年6月到9月,每月中旬在民勤绿洲边缘不同林龄(2 a,5 a,10 a,20 a,30 a)的人工梭梭林内测试不同深度(20 cm,30 cm,50 cm,100 cm,150 cm和200 cm)的土壤含水量变化情况。分析结果表明,不同林龄的梭梭林内土壤含水量与时间和深度有关。土壤表层含水量主要受自然降雨控制,8月底发生比较大的自然降雨后,9月不同林龄梭梭林内20 cm和30 cm的含水量显著高于其他3个月。土壤50 cm以下的含水量比较稳定,当降雨少,土壤表层含水量低时,可以作为梭梭利用的水分来源。在7月和8月,5 a梭梭林内土壤含水量最低,表明梭梭对土壤水分的消耗最多,栽植密度过大,因此,需要间伐减少植株数量才能维持其稳定性。
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| 关 键 词： | 土壤含水量 土壤深度 林龄 |
| 收稿时间： | 2010-3-16 |
| 修稿时间： | 2010-5-26 |
Soil Water in Planted Haloxylon ammodendron Shrubland of Different Age outside Minqin Oasis |
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| ZHU Ya-juan,JIA Zhi-ging,LIU Li-ying,LIU Hai-tao.Soil Water in Planted Haloxylon ammodendron Shrubland of Different Age outside Minqin Oasis[J].Journal of Desert Research,2011,31(2):442-446. |
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| Authors: | ZHU Ya-juan JIA Zhi-ging LIU Li-ying LIU Hai-tao |
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| Institution: | ZHU Ya-juan,JIA Zhi-qing,LIU Li-ying,LIU Hai-tao(State Forestry Administration Key Laboratory of Tree Breading and Cultivation,Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China) |
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| Abstract: | Soil water contents at different depths(20 cm,30 cm,50 cm,100 cm,150 cm and 200 cm) were examined in planted Haloxylon ammodendron shrubland of different stand age(2-year,5-year,10-year,20-year and 30-year) outside Minqin oasis from June to September,2009.The results showed that soil water contents in H.ammodendron of different stand age were related to precipitation and soil depth.Soil water content at surface layer was affected by natural rainfall.In September,soil water contents at 20 cm and 30 cm in H.a... |
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| Keywords: | soil water content soil depth stand age |
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