[1]马明呈,宋西德*,桓国江,等.青海贵南高海拔沙地沙棘种群根系生物量的研究[J].西北林学院学报,2006,21(03):11.
　MA Mingcheng,SONG Xide,HUAN Guojiang,et al.Studies on Roots Biomass of Hippophae rhamnoides Community in High Altitude Sand in Guinan of Qinghai[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2006,21(03):11.
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青海贵南高海拔沙地沙棘种群根系生物量的研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第21卷
期数:
2006年03期
页码:
11
栏目:
西部生态建设论坛
出版日期:
2006-06-30

文章信息/Info

Title:
Studies on Roots Biomass of Hippophae rhamnoides Community in High Altitude Sand in Guinan of Qinghai
作者:
马明呈1; 2; 宋西德1*; 桓国江3; 徐生旺4; 才让旦智2
1.西北农林科技大学 林学院,陕西 杨陵 712100；2.青海大学 农牧学院,青海 西宁 810003；3.青海省同仁县林业局,青海 同仁 811300； 4.青海省林业技术推广总站, 青海 西宁 810001
Author(s):
MA Mingcheng1; 2; SONG Xide1; HUAN Guojiang3; XU Shengwang4;  CAI Rangdanzhi2
1.College of Forestry，Northwest A F University ,Yangling,Shaanxi 712100,China；2.Agricalture and Animal Husbandry College,Qinghai University,Xining, Qinghai 810003,China；3.Tongren Forest Bureau of Qinghai, Tongren, Qinghai 811300,China;4.Forestry Technica
关键词:
贵南; 高海拔沙地; 沙棘; 根系生物量
Keywords:
Guinan; high altitude sand; Hippophae rhamnoides; roots biomass
分类号:
S793.601
文献标志码:
A
摘要:
用土钻取样法研究了生长于流动沙地和固定沙地上的中国沙棘种群根系生物量。结果表明,在干旱季节，各土层的根际土壤含水量随深度的增加而增加，增加幅度为流动沙地大于固定沙地；在湿润季节，根际土壤含水量随深度的增加而减少，减少幅度为固定沙地大于流动沙地。表土层(015 cm)中沙棘主根分布量在流动沙地显著高于固定沙地。在不同类型沙地上,沙棘细根分布比例的差异表现为 在干旱季节，土层深度为045 cm处，固定沙地（86.7%）显著高于流动沙地（62.4%），而在土层深度大于45 cm处，流动沙地（37.6%）显著高于固定沙地（13.3%）；在湿润季节，表土层（015 cm）中细根分布比例显著高于干旱季节，土层深度大于15 cm的细根分布比例较少，流动沙地仅为13.3%，固定沙地为37.5%。西北林学院学报21卷第3期马明呈等青海贵南高海拔沙地沙棘种群根系生物量的研究
Abstract:
By the method of soil auger sampling, the distribution and growth degree dynamics and rhizosphere soil water dynamics of Hippophae rhamnoides biomass roots with depth were studied under different soil water conditions in growing season. The results indicated that in the drought season, soil moisture in the rhizosphere increased with the depth, it increased more in moving stand dunes than in fixed ones; Soil moisture in the rhizosphere decreased with the depth, it decreased more rapidly in fixed sand dunes than in moving ones;In the range of 015 cm below the surface, the main root distribution abundance of H.rhamnoides was significantly more in moving sand dunes than in the fixed ones; In the drought season ,there was a higher proportion of thin roots in 045 cm layer in fixed sandy land (86.7%) than that in the moving sand dunes (62.4%),but below the 45 cm layer, the distribution of the thin roots in moving sand dunes(37.6%) were higher than in the fixed ones; In raining season, the proportion of the thin roots distribution in surface (015 cm) was significantly higher than that in drought season, but under 15 cm layer, the distribution proportion of thin roots decreased, it was only 13.3% in moving sand dunes, and 37.5% in fixed ones.

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备注/Memo

备注/Memo:
收稿日期 20050916修回日期 20051027作者简介 马明呈（1965），男，甘肃临夏人，在读硕士研究生，副教授，主要从事森林培育、生态学教学和科研工作。*通讯作者 宋西德,男，研究员,研究方向为林木种苗繁育理论与技术。
更新日期/Last Update: 2010-05-04