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[1]贺合亮,阳小成,王东,等.青藏高原东部窄叶鲜卑花灌丛土壤C、N、P生态化学计量学特征[J].应用与环境生物学报,2015,21(06):1128-1135.[doi:10.3724/SP.J.1145.2015.02021]
 HE Heliang,YANG Xiaocheng,WANG Dong,et al.Ecological stoichiometric characteristics of soil carbon, nitrogen and phosphorus of Sibiraea angustata shrub in eastern Qinghai-Tibetan Plateau[J].Chinese Journal of Applied & Environmental Biology,2015,21(06):1128-1135.[doi:10.3724/SP.J.1145.2015.02021]
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青藏高原东部窄叶鲜卑花灌丛土壤C、N、P生态化学计量学特征()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
21卷
期数:
2015年06期
页码:
1128-1135
栏目:
研究论文
出版日期:
2015-12-25

文章信息/Info

Title:
Ecological stoichiometric characteristics of soil carbon, nitrogen and phosphorus of Sibiraea angustata shrub in eastern Qinghai-Tibetan Plateau
作者:
贺合亮 阳小成 王东 孙誉育 尹春英 李婷 黎云祥 周国英 张林 刘庆
1成都理工大学材料与化学化工学院 成都 610059 2中国科学院成都生物研究所,中国科学院山地生态恢复与生物资源利用重点实验室,生态恢复与生物多样性保育四川省重点实验室 成都 610041 3西华师范大学生命科学学院 南充 637009 4中国科学院西北高原生物研究所 西宁 810008 5中国科学院青藏高原研究所 北京 100101
Author(s):
HE Heliang YANG Xiaocheng WANG Dong SUN Yuyu YIN Chunying LI Ting LI Yunxiang ZHOU Guoying ZHANG Lin LIU Qing
1 College of Material and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China 2Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China 3The School of Life Science, China West Normal University, Nanchong 637009, China 4Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China 5Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
关键词:
窄叶鲜卑花生态化学计量学土壤碳土壤氮土壤磷青藏高原
Keywords:
Sibiraea angustata ecological stoichiometry soil carbon soil nitrogen soil phosphorus Qinghai-Tibetan Plateau
分类号:
S714.2 (27)
DOI:
10.3724/SP.J.1145.2015.02021
文献标志码:
A
摘要:
土壤是陆地生态系统的重要组成部分,研究土壤生态化学计量学特征对于揭示土壤元素的循环和平衡机制具有重要意义. 采用分层随机抽样方法来布设样地,选取16个位于青藏高原东部的窄叶鲜卑花灌丛样地进行取样调查,对土壤样品碳(C)、氮(N)、磷(P)含量进行测定与分析,并同步分析不同土层C、N、P比值特征. 结果表明:窄叶鲜卑花灌丛土壤表层(0-10 cm)C、N、P含量的均值分别为(73.27 ± 20.25)g/kg、(6.27 ± 1.8)g/kg和(1.13 ± 0.25)g/kg,该灌丛土壤C、N、P含量均随土层深度的增加而减少,且减少的程度不一;C、N含量的变异系数总体上随土层加深而增大,P含量的变异系数相对稳定;C、N之间的相关性和线性拟合程度均高于C、P和N、P. 窄叶鲜卑花灌丛土壤表层(0-10 cm)C/N、C/P和N/P的均值分别为10.88 ± 0.87、59.49 ± 18.64和5.49 ± 1.84,空间变异性表现为C/N < N/P < C/P,C/N、C/P和N/P的变异系数随着土层加深而增加,土壤C、N、P的空间分布特征在一定程度上决定了C/N、C/P和N/P的空间分布特征. 本研究结果可为青藏高原灌丛植被保护、恢复和土壤养分管理提供理论依据.
Abstract:
For a comprehensive understanding of the carbon and nitrogen fixation mechanism of the Qinghai-Tibetan Plateau shrub ecosystem, the content of carbon (C), nitrogen (N) and phosphorus (P) in different soil layers is needed to be known. This paper aimed to study the soil C, N and P ecological stoichiometric characteristics of Sibiraea angustata shrub in eastern Qinghai-Tibetan Plateau. All together 16 Sibiraea angustata shrub sample plots were selected by the stratified sampling method in eastern Qinghai-Tibetan Plateau. We analyzed the distribution characteristics of soil C, N and P content and their stoichiometric ratios. These contents were shown to decrease with the soil depth. The average contents of C, N and P in topsoil (0-10 cm) of the sixteen shrub sample plots were 73.27±20.25 g/kg, 6.27±1.8 g/kg and 1.13±0.25 g/kg, respectively. The coefficient of variation of C, N increased with the soil depth, but that of P was relatively stable. Correlation analysis showed a better correlation between C - N than between C - P and N - P. The average ratios of C/N, C/P and N/P were 10.47±2.56, 38.66±21.66 and 3.67±1.88, respectively, and the ratio of C/N was relatively stable in all soil layers. The coefficients of variation of C/N, C/P and N/P also increased with the soil depth. The results indicated that the distribution characteristics of C/N, C/P and N/P are partly determined by the distribution characteristics of C, N and P. The researches of soil ecological stoichiometry in eastern Qinghai-Tibetan Plateau are helpful for optimal management and protection of ecosystems in maintaining regional ecological security and sustainable development.

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中国科学院战略性先导科技专项子课题(XDA05050303)资助 Supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA05050303)
更新日期/Last Update: 2016-01-05