Effect on Alpine Vegetation of Different Grassland Ecosystems Composed of Soil Organic Carbon and Water Stable Aggregates Content

doi:10.11733/j.issn.1007-0435.2010.06.001

›› 2010, Vol. 18 ›› Issue (6): 749-757.DOI: 10.11733/j.issn.1007-0435.2010.06.001

Effect on Alpine Vegetation of Different Grassland Ecosystems Composed of Soil Organic Carbon and Water Stable Aggregates Content

WANG Jian-lin¹, WANG Zhong-hong¹, ZHANG Xian-zhou², OUYANG Hua², CHANG Tian-jun¹, LI Peng¹, SHEN Zhen-xi², ZHONG Zhi-ming²

1. Plant Sci-Tech Department, Tibet Agricultural and Animal Husbandry College, Linzhi, Tibet 860000, China;
2. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China

Received:2009-03-11 Revised:2010-10-01 Online:2010-12-15 Published:2010-12-15

不同植被对高寒草原生态系统土壤有机碳组成和水稳性团聚体含量的影响

王建林¹, 王忠红¹, 张宪洲², 欧阳华², 常天军¹, 李鹏¹, 沈振西², 钟志明²

1. 西藏农牧学院植物科学技术系, 西藏, 林芝, 860000;
2. 中国科学院地理科学与资源研究所, 北京, 100101

作者简介:王建林(1969- ),男,教授,甘肃临洮人,主要从事高原生态环境与生物多样性研究,E-mail:xzwangjl@126.com
基金资助:
国家自然科学基金项目(41061008)资助

Abstract

Abstract: This study reveals effects of different vegetations on soil organic carbon components and water stable aggregate contents of Qinghai-Tibet Plateau alpine grassland ecosystem.Soil total organic carbon(TOC),sodium pyrophosphate extraction of organic carbon(SPPC),hydrolysis of carbohydrate(HDC),hot water extraction of carbohydrates(HWC) and water-stable aggregates of contents were measured from July to August in 2007.Results show that total organic carbon(TOC),sodium pyrophosphate extraction of organic carbon(SPPC),hydrolysis of carbohydrate(HDC),hot water extraction of carbohydrates(HWC) and water-stable aggregates content differed significantly in surface soil(0～20 cm)among different vegetations(P<0.05).Water-stable aggregates were significantly positively correlated with TOC and significantly negatively correlated with SPPC(P<0.01),whereas no relations were seen to HDC and HWC.However,the interaction between HDC,HWC and TOC,SPPC is significantly related with water-stable aggregates content(P<0.01).

Key words: Alpine grassland, Ecosystem, Soil, Composition of organic carbon, Water-stable aggregates

摘要： 为了揭示不同植被对青藏高原高寒草原生态系统土壤有机碳组成和水稳性团聚体含量的影响,于2007年7-8月,采用实测方法,对土壤中总有机碳(TOC)、焦磷酸钠提取有机碳(SPPC)、水解碳水化合物(HDC)、热水提取碳水化合物(HWC)及水稳性团聚体的含量进行了测定。结果表明:不同植被下表层(0~20 cm)土壤中TOC,SPPC,HDC,HWC和水稳性团聚体含量差异显著(P<0.05);水稳性团聚体与TOC呈极显著正相关,且与SPPC呈极显著负相关(P<0.01),与HDC和HWC不相关,但HDC,HWC与TOC和SPPC的互作却与水稳性团聚体含量之间呈极显著相关(P<0.01)。

关键词: 高寒草原, 生态系统, 土壤, 有机碳组成, 水稳性团聚体

CLC Number:

S812.2

WANG Jian-lin, WANG Zhong-hong, ZHANG Xian-zhou, OUYANG Hua, CHANG Tian-jun, LI Peng, SHEN Zhen-xi, ZHONG Zhi-ming. Effect on Alpine Vegetation of Different Grassland Ecosystems Composed of Soil Organic Carbon and Water Stable Aggregates Content[J]. , 2010, 18(6): 749-757.

王建林, 王忠红, 张宪洲, 欧阳华, 常天军, 李鹏, 沈振西, 钟志明. 不同植被对高寒草原生态系统土壤有机碳组成和水稳性团聚体含量的影响[J]. , 2010, 18(6): 749-757.

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Effect on Alpine Vegetation of Different Grassland Ecosystems Composed of Soil Organic Carbon and Water Stable Aggregates Content

不同植被对高寒草原生态系统土壤有机碳组成和水稳性团聚体含量的影响

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