| 伊犁河谷不同植被带下土壤有机碳分布 |
| |
| 引用本文： | 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,2010,20(5):729-740. |
| |
| 作者姓名： | 杨玉海 陈亚宁 李卫红 陈亚鹏 |
| |
| 作者单位： | 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 |
| |
| 基金项目： | 国家支撑计划课题，"西部之光" |
| |
| 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0～50 cm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最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 |
| 收稿时间： | 2010-03-30 |
| 修稿时间： | 2010-05-06 |
Distribution of soil organic carbon under different vegetation zones in the Ili River Valley, Xinjiang |
| |
| YANG Yuhai,CHEN Yaning,LI Weihong,CHEN Yapeng.Distribution of soil organic carbon under different vegetation zones in the Ili River Valley, Xinjiang[J].Acta Geographica Sinica,2010,20(5):729-740. |
| |
| Authors: | YANG Yuhai CHEN Yaning LI Weihong CHEN Yapeng |
| |
| Institution: | Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China |
| |
| Abstract: | We analyzed and estimated the distribution and reserves of soil organic carbon under nine different vegetation conditions including alpine meadow, meadow steppe, typical steppe, desert steppe, and temperate coniferous forest and so on, in the Ili River valley, Xinjiang according to data from field investigations and laboratory analyses in 2008 and 2009. The study results show that the soil organic carbon content in the Ili River valley varies with the type of vegetation. In the 0–50 cm soil horizon, the soil organic carbon content is the highest under the vegetation types of alpine meadow and meadow steppe, slightly lower under temperate coniferous forest and typical steppe, and the lowest under the intrazonal vegetation and desert vegetation types. The soil organic carbon content shows basically a tendency to decrease as soil depth increases under various vegetation types except in the case of the intrazonal vegetation. Similarly, the soil organic carbon density is the highest and varies little under the vegetation types of alpine meadow, meadow steppe and temperate coniferous forest, and is the lowest under the desert vegetation type. Both the soil organic carbon content and density in the topsoil of meadows in the Ili River valley are high, so protecting meadows in the Ili River valley, and especially their topsoil, should be a priority so that the potential of change in soil organic carbon in the shallow soil horizon is reduced, and this means maintenance of the stability of the soil carbon pool. |
| |
| Keywords: | vegetation grassland soil organic carbon Ili River Valley |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《地理学报》浏览原始摘要信息 |
| 点击此处可从《地理学报》下载免费的PDF全文 |
|
