伊犁野果林浅层土壤养分生态化学计量特征及其影响因素

doi:10.13287/j.1001-9332.201607.002

应用生态学报 ›› 2016, Vol. 27 ›› Issue (7): 2239-2248.doi: 10.13287/j.1001-9332.201607.002

伊犁野果林浅层土壤养分生态化学计量特征及其影响因素

陶冶^1,2, 张元明^2*, 周晓兵²

¹安庆师范学院生命科学学院皖西南生物多样性研究与生态保护安徽省重点实验室, 安徽安庆 246133;
²中国科学院新疆生态与地理研究所干旱区生物地理与生物资源重点实验室, 乌鲁木齐 830011

收稿日期:2015-12-23 发布日期:2016-07-18
通讯作者: *E-mail: zhangym@ms.xjb.ac.cn
作者简介:陶冶,男,1983年生,博士,讲师. 主要从事荒漠和森林生态学研究. E-mail: xishanyeren@163.com
基金资助:
本文由科技部科技基础性工作专项(2012FY111500)资助

Ecological stoichiometry of surface soil nutrient and its influencing factors in the wild fruit forest in Yili region, Xinjiang, China.

TAO Ye^1,2, ZHANG Yuan-ming^2*, ZHOU Xiao-bing²

¹Anhui Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, College of Life Sciences, Anqing Normal University, Anqing 246133, Anhui, China;
²Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China

Received:2015-12-23 Published:2016-07-18
Contact: *E-mail: zhangym@ms.xjb.ac.cn
Supported by:
This work was supported by the China National Key Basic Research Program (2012FY111500).

摘要/Abstract

摘要： 对伊犁河谷野果林20个群落60个样方土壤及环境因子调查取样,研究了野果林0～10和10～20 cm土层土壤有机碳(C)、全氮(N)、全磷(P)及全钾(K)的化学计量特征及其影响因素.结果表明: 伊犁野果林0～10 cm土层土壤C、N、P、K含量分别为73.15、7.00、1.14和14.74 g·kg^-1,C:N、C:P、C:K、N:P、N:K、P:K分别为10.37、62.73、5.05、6.05、0.48和0.08;除K和C:N外,0～10 cm土层均显著高于10～20 cm土层.P、K、C:N及P:K具有较高的稳定性(CV=8%～24%),其他指标具中等变异性(CV=28%～46%).土壤养分含量及化学计量比在不同取样地点、不同群落类型及不同坡向间均有显著差异.除C、N之间为幂函数关系外,土壤养分含量及其与化学计量比之间均为二次函数关系,体现了土壤养分化学计量特征之间的非线性耦合特征.坡向、降水量及温度是野果林土壤化学计量特征的主要影响因子.

Abstract: Soil samples and environmental factors in 60 plots of 20 communities in the wild fruit forest in Yili valley were investigated, and then the stoichiometric characteristics of soil organic carbon (C), total nitrogen (N), total phosphorus (P) and total potassium (K) in 0-10 cm and 10-20 cm layers and their influencing factors were studied. The results showed that soil C, N, P and K contents in 0-10 cm layer were 73.15, 7.00, 1.14 and 14.74 g·kg^-1, respectively. Soil C:N, C:P, C:K, N:P, N:K and P:K were 10.37, 62.73, 5.05, 6.05, 0.48 and 0.08, respectively. Except for K and C:N, the stoichiometric values in 0-10 cm layer were significantly higher than that in 10-20 cm layer. Soil P, K, C:N and P:K presented high stability (CV=8%-24%), while others showed moderate variability (CV=28%-46%). Soil nutrient contents and their stoichiometric ratios differed markedly in different sampling sites, communities and slope aspects. Except the power relationship between C and N, all the soil nutrient contents and their stoichiometric ratios represented quadratic relationships, indicating nonlinear coupling among soil stoichiometric traits. Slope aspect, precipitation and temperature were the main factors influencing soil stoichiometry in the wild fruit forest in Yili region.

陶冶, 张元明, 周晓兵. 伊犁野果林浅层土壤养分生态化学计量特征及其影响因素[J]. 应用生态学报, 2016, 27(7): 2239-2248.

TAO Ye, ZHANG Yuan-ming, ZHOU Xiao-bing. Ecological stoichiometry of surface soil nutrient and its influencing factors in the wild fruit forest in Yili region, Xinjiang, China.[J]. Chinese Journal of Applied Ecology, 2016, 27(7): 2239-2248.

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伊犁野果林浅层土壤养分生态化学计量特征及其影响因素

Ecological stoichiometry of surface soil nutrient and its influencing factors in the wild fruit forest in Yili region, Xinjiang, China.

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