Effects of gravel on grassland soil carbon and nitrogen in the arid regions of the Tibetan Plateau
文献类型：期刊论文
| 作者 | Wang, Xiaodan ; Liu, Gangcai; Liu, Shuzhen
|
| 刊名 | GEODERMA
 |
| 出版日期 | 2011-10-30 |
| 卷号 | 166期号:1页码:181-188 |
| 关键词 | Stone cover Soil aggregate Carbon sequestration Steppe ecosystem |
| ISSN号 | 0016-7061 |
| 通讯作者 | Wang, XD（王小丹） |
| 英文摘要 | Many previous studies have focused on soil gravel concentrations and their effect on crop yields in agricultural systems. The extent of carbon and nitrogen sequestration in soils under steppe systems in relation to surface gravel mulch remains largely unexplored. This study investigated the effects of gravel mulches on soil organic carbon and total nitrogen stocks in the arid and windy regions of the Tibetan Plateau. Surface gravel mulches provide a more favorable environment for soil carbon and nitrogen stocks than do non-mulched sites. Soil organic carbon and total nitrogen stocks were highest (46.9 Mg ha(-1) SOC and 2.8 Mg ha(-1) TN) in the medium gravel mulch sites with similar to 40-50% gravel, and lowest (29.5 Mg ha(-1) SOC and 1.4 Mg ha(-1) TN) in no gravel mulch sites. Analysis of aggregate size fractions indicated that the vast majority of SOC was present in microaggregate fractions throughout the top 30 cm of soil. Considering the low level of soil disturbance in the study area, the carbon contained in the macroaggregate fraction might become stabilized in the soil. Gravel mulches above the soil surface have an important bearing on soil carbon sequestration as they control wind erosion, decrease soil surface evaporation and change soil physical behavior in the arid and semiarid regions. (C) 2011 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Soil Science |
| 研究领域[WOS] | Agriculture |
| 关键词[WOS] | LAND-USE PATTERNS ; ORGANIC-MATTER ; SIZE-FRACTIONS ; BULK-DENSITY ; CLIMATE-CHANGE ; FOREST SOILS ; STONE COVER ; ROOT-GROWTH ; SYSTEMS ; EROSION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000296043800018 |
| 公开日期 | 2013-06-25 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/5478]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 作者单位 | Chinese Acad Sci, Key Lab Mt Environm Evolvement & Regulat, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xiaodan,Liu, Gangcai,Liu, Shuzhen. Effects of gravel on grassland soil carbon and nitrogen in the arid regions of the Tibetan Plateau[J]. GEODERMA,2011,166(1):181-188. |
| APA | Wang, Xiaodan,Liu, Gangcai,&Liu, Shuzhen.(2011).Effects of gravel on grassland soil carbon and nitrogen in the arid regions of the Tibetan Plateau.GEODERMA,166(1),181-188. |
| MLA | Wang, Xiaodan,et al."Effects of gravel on grassland soil carbon and nitrogen in the arid regions of the Tibetan Plateau".GEODERMA 166.1(2011):181-188. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。