| 黄土高原刺槐细根与土壤水分特征 |
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| 引用本文： | 王迪海,赵忠,张彦.黄土高原刺槐细根与土壤水分特征[J].西北林学院学报,2012(1):1-5. |
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| 作者姓名： | 王迪海 赵忠 张彦 |
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| 作者单位： | 西北农林科技大学西部环境与生态教育部重点实验室;陕西省天然林保护工程管理中心 |
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| 基金项目： | 陕西省自然科学基础研究项目(2011JM3001);国家自然科学基金(30671673) |
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| 摘 要： | 在黄土高原甘肃省泾川县,采用根钻法对刺槐(Robinia pseudoacacia)林地的细根和土壤水分进行动态调查。结果表明:刺槐林地0～150cm土层是树木细根的主要分布层,有87%以上的细根表面积分布。刺槐细根表面积垂直分布与剖面土壤水分间呈显著正相关(p<0.05)。生长季内刺槐林地土壤含水量动态变化为10月>4月>6月>8月,刺槐细根表面积的动态变化为4月>6月>8月>10月。刺槐细根表面积动态与土壤含水量的季节动态不完全一致。总体上刺槐细根表面积季节动态与林地土壤含水量的相关性不显著。
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| 关 键 词： | 黄土高原 刺槐 细根 垂直分布 季节动态 |
The Fine Root of Robinia pseudoacacia and Soil Moisture in the Loess Plateau |
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| WANG Di-hai,ZHAO Zhong,ZHANG Yan.The Fine Root of Robinia pseudoacacia and Soil Moisture in the Loess Plateau[J].Journal of Northwest Forestry University,2012(1):1-5. |
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| Authors: | WANG Di-hai ZHAO Zhong ZHANG Yan |
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| Institution: | 1.Key Laboratory of Environment and Ecology in Western China,Northwest A&F University,Yangling,Shaanxi 712100,China; 2.Shaanxi Natural Forest Protecion Center,Xian,Shaanxi 710082,China) |
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| Abstract: | By using soil coring method,the seasonal dynamics of fine roots and soil water content in Robinia pseudoacacia forests were investigated in Jingchuan County that is located in the Loess Plateau of China.The results showed that more than 87% of the total fine root surface area were concentrated in the 0-150 cm soil layer in the R.pseudoacacia plantation.There was a significant positive correlation(p< 0.05) between vertical distribution of fine root surface area and soil water distribution in the profile.During the growth season,the mean soil water content of R.pseudoacacia forest changed in order of October>April>June>August,but the fine root surface area of R.pseudoacacia changed in the order of April>June>August >October.There lay differences in the seasonal dynamics of fine root surface area and soil water content.There was not significant correlation(p< 0.05) between fine root surface area and soil water content. |
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| Keywords: | Loess Plateau Robinia pseudoacacia fine root vertical distribution seasonal dynamics |
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