Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 31500369 |
| 半干旱沙地植物根区生物要素对根分解及氮素释放的影响 | |
| 罗永清 | |
| 主持机构 | 中国科学院寒区旱区环境与工程研究所 |
| 开始日期 | 2016 |
| 结束日期 | 2018 |
| 资助经费 | 200000(CNY) |
| 项目类别 | 青年科学基金项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | Plant root activity is a key process of the material circulation and energy flow in plant-soil system. Nitrogen is a limited factor to the ecosystem primary production in semi-arid region and root decomposition is a dominant pathway of nitrogen transportation from plant to soil. Root zone biological factors in terms of root growth, mycorhiza, root exudates and rhizosphere microorganisms related to root growth played different roles in root decomposition and nitrogen transportation. However, few researches focused on this. In this study responses of root decomposition rate and nitrogen transportation to live root growth, mycorhiza, root exudates and rhizosphere microorganisms of Artemisia halodendron in are studied by root chamber method in field experiment, combined with laboratory incubation. Biological and chemical effects of root exudates and rhizosphere microorganisms on root decomposition and element release are separated by laboratory experiments. Also component changes of soil nitrogen related with root decomposition are measured together. Then the relationship between root decomposition rate and nitrogen component is analyzed to understand the response process of root decomposition to different processes to root growth, mycorhiza, root exudates and rhizosphere microorganisms. The aim is to offer a further discussion on the impact mechanism of root growth, mycorhiza, root exudates and rhizosphere microorganisms on root decomposition and the mechanism of plant-root system nitrogen transportation in semi-arid region, and then provide a theoretical basis for in-depth understanding of the nitrogen feedback mechanism of plant-soil system in semi-arid sandy land. |
| 中文关键词 | 凋落物分解 ; 细根 ; 根际效应 ; 土壤微生物 ; 菌根 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346928 |
| 推荐引用方式 GB/T 7714 | 罗永清.半干旱沙地植物根区生物要素对根分解及氮素释放的影响.2016. |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [罗永清]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [罗永清]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [罗永清]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
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。
