[1]成文浩,陈林.贺兰山油松林根系空间分布特征研究[J].水土保持研究,2013,20(01):89-93.
　CHENG Wen-hao,CHEN Lin.Analysis on Spatial Distribution of the Pinus Tabulaeformis Carr. Root in Helan Mountain[J].Research of Soil and Water Conservation,2013,20(01):89-93.
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贺兰山油松林根系空间分布特征研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 20 期数: 2013年01期 页码: 89-93 栏目: 出版日期: 2013-02-28
Title:
Analysis on Spatial Distribution of the Pinus Tabulaeformis Carr. Root in Helan Mountain
作者:
成文浩1,2, 陈林2
1. 宁夏大学 人事处, 银川 750021;
2. 宁夏大学 西北退化生态系统恢复与重建教育部重点实验室, 银川 750021
Author(s):
CHENG Wen-hao1,2, CHEN Lin2
1. Deparament of Human Resourses, Ningxia University, Yinchuan 750021, China;
2. Key Laboratory for Restoration and Reconstruction of Northwest Degraded Ecosythem, Ministry of Education, Ningxia University, Yinchuan 750021, China
关键词:
油松; 根系; 空间分布; 贺兰山
Keywords:
Pinus Tabulaeformis Carr.; root; spatial distribution; Helan Mountain
分类号:
S791.254
摘要:
通过根钻法对贺兰山油松林木细根分布特征进行了研究，结果表明：在40 cm以上土层中，各径级根系均有大量分布，而在40 cm以下土层中根系分布逐渐减少；92.9%的 <2 mm的细根集中分布于0—60 cm土层中，0—10 cm表层中的细根量占30.8%；油松根系具有深根性特征，但粗根集中于40 cm以上土层中，占粗根总量的88.6%；在距油松样木不同距离处的土壤中，油松细根随着距样木距离的加大而不断减少，一般在距样木2.0 m的位置，油松细根量减至最低，同时细根根长、表面积、体积及根尖数都在此处降至最低。
Abstract:
The spatial distribution of the Pinus Tabulaeformis Carr. root was studied. The results showed that all kinds of roots were distributied largely in the soil above 40 cm, but the size of roots gradually reduced to the minimum of 2 mm below 40 cm. So, the thin roots concentrated in the range of the 0—60 cm of the soil layers, accounting for 92.9% of the total thin roots, especially in the range of 0—10 cm topsoil, thin roots accounted for 30.8%. Ptabulaeformis roots have deep-rooted characteristics, and the coarse roots concentrated in more than 40 cm soil layer, accounting for 88.6% of the total coarse root. There were a large number of thin Ptabulaeformis roots in the depth of 40 cm and the most concentrated in the topsoil. Furthermore, the number of thin Ptabulaeformis roots reduced with the increase of the distance from the sample tree. Generally, the total roots, length, surface area, volume and root tip number reduced to the minimum away from the sample tree about 2.0 m away from the sample plant.

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备注/Memo

收稿日期:2012-05-28;改回日期:2012-08-29。
基金项目:宁夏自然科学基金资助项目（NZ12124）；宁夏大学自然科学基金资助项目（ZR1159）
作者简介:成文浩(1982-),男,山西文水人,讲师,主要从事生态学方面的研究。E-mail:chengwh@nxu.edu.cn
通讯作者:陈林(1983-),男,湖南湘乡人,助理研究员,主要从事干旱区资源与环境方面的研究。E-mail:chenlin198388@163.com

更新日期/Last Update: 1900-01-01