伊犁河谷不同植被带下土壤有机碳分布

doi:10.11821/xb201005009

地理学报 ›› 2010, Vol. 65 ›› Issue (5): 605-612.doi: 10.11821/xb201005009

伊犁河谷不同植被带下土壤有机碳分布

杨玉海; 陈亚宁; 李卫红; 陈亚鹏

中国科学院绿洲生态与荒漠环境重点实验室, 中国科学院新疆生态与地理研究所, 乌鲁木齐830011

收稿日期:2009-12-24 修回日期:2010-03-11 出版日期:2010-05-25 发布日期:2010-05-25
通讯作者: 陈亚宁, 博士, 博导, 从事干旱区环境与生态学研究。E-mail: chenyn@ms.xjb.ac.cn
作者简介:杨玉海(1972-), 女, 博士, 主要从事土壤生态研究。E-mail: yangyh@ms.xjb.ac.cn
基金资助:
国家支撑计划课题(2007BAC15B08); “西部之光”(RCPY200801)

Soil Organic Carbon Distribution of Different Vegetation Types in the Ili River Valley

YANG Yu-hai; CHEN Ya-ning; LI Wei-hong; CHEN Ya-peng

Key Laboratory of Oasis Ecology and Desert Environment; Xinjiang Institute of Ecology and Geography; CAS; Urumqi 830011; China

Received:2009-12-24 Revised:2010-03-11 Online:2010-05-25 Published:2010-05-25
Supported by:
The National Science and Technology Support Plan, No.2007BAC15B08; CAS Western Light Program, No.RCPY200801

摘要/Abstract

摘要：

结合2008年和2009年野外实地调查与室内分析的资料,运用方差分析等方法对伊犁河谷高山草甸、草甸草原、典型草原、荒漠草原、温性针叶林等9种不同植被条件下的土壤有机碳含量分布及其储量进行了分析估算。研究结果表明:伊犁河谷土壤有机碳含量因植被类型变化而不同。在0～50cm土层范围,高山草甸、草甸草原土壤有机碳含量较高,其次是温性针叶林和典型草原,含量最低的是隐域植被和荒漠植被土壤。除隐域植被外,各植被类型下土壤有机碳含量基本呈随着土层深度增加而降低的变化趋势。有机碳密度同样是高山草甸、草甸草原和温性针叶林土壤有机碳密度较高且比较相近,荒漠植被下土壤有机碳密度最低。伊犁河谷草地表层土壤有机碳含量高、密度大,因此应重视对伊犁河谷草地的保护,尤其要保护草地表层土壤以降低浅层土壤有机碳发生变化的可能性,维护土壤碳库的稳定性。

关键词: 土壤有机碳, 植被, 草地, 伊犁

Abstract:

Based on data from field investigations and laboratory research work in 2008 and 2009, this paper, by variance analysis, studies the distribution and storage of soil organic carbon contents of typical types of vegetation in the Ili river valley including alp meadow, meadow grassland, typical steppe, desert steppe, temperate coniferous forest and so on. The results show that soil organic carbon contents varied with the changes of plant types. At 0-50 cm soil layer, soil organic carbon contents of alp meadow and meadow grassland are the highest, followed by temperate coniferous forest, typical steppe, and desert steppe. Deciduous broad-leaved forest and secondary forest almost have the same content of organic carbon, which is higher than that of typical steppe, the soil organic carbon content is the lowest in intrazonal vegetation and desert vegetation. Soil organic carbon contents of different types of vegetation, with the exception of intrazonal vegetation, have a descending trend with the decrease of soil depth. There are differences in soil organic carbon density of different types of vegetation. A higher density of soil organic carbon occurs in alp meadow, meadow grassland and temperate coniferous forest, while the lowest density is observed in desert vegetation. In the Ili river valley, soil organic carbon contents of grassland at surface soil layer are higher, so it is very important to protect surface soil of grassland and to prevent soil organic carbon change in surface layer, which is very useful to keep stability of soil carbon pool.

Key words: soil organic carbon, vegetation, grassland, Ili river valley

中图分类号:

S153.62

杨玉海; 陈亚宁; 李卫红; 陈亚鹏. 伊犁河谷不同植被带下土壤有机碳分布[J]. 地理学报, 2010, 65(5): 605-612.

YANG Yuhai; CHEN Yaning; LI Weihong; CHEN Yapeng. Soil Organic Carbon Distribution of Different Vegetation Types in the Ili River Valley[J]. Acta Geographica Sinica, 2010, 65(5): 605-612.

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伊犁河谷不同植被带下土壤有机碳分布

Soil Organic Carbon Distribution of Different Vegetation Types in the Ili River Valley

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