Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41401262 |
| 污泥施用对沙地生态系统土壤溶解性有机碳迁移转化的影响及其机制 | |
| 孙学凯 | |
| 主持机构 | 中国科学院沈阳应用生态研究所 |
| 开始日期 | 2015 |
| 结束日期 | 2017 |
| 资助经费 | 250000(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 | Dissolved organic carbon (DOC) plays a critical role in soil carbon cycle in terrestrial ecosystems. DOC can bind with hydrophobic organic contaminants, and the chemical behaviors between them are complicated. Moreover, previous studies have overlooked the effects of organic contaminants on soil organic carbon cycle. Furthermore, under different conditions of soil moisture due to canopy interception of rainfall by various vegetable types, the mechanisms of organic contaminants on the transportation and transformation of soil DOC are still not clear. In this proposal, based on the ecological and environmental issues caused by organic contaminants, we will investigate how organic contaminants from sewage sludge impacts soil DOC cycle in Mongolian pine plantation, sparse woodland and grassland at semi-arid Horqin sandy lands. We will measure concentrations, fractions, the δ13C and biodegradation of DOC. Furthermore, distribution behaviors of the organic contaminants to DOC fractions, and microbial community structure will be also determined. We attempt to explain the mechanisms of soil DOC distributions as affected by organic contaminants, clarify transportation manners of DOC in the organic polluted soil, and specify the role of organic contaminants on soil organic carbon cycle in different sandy land ecosystems. The results from this project will provide new insights for forecasting soil organic carbon changes during sewage sludge application to sandy land for soil amendments. |
| 来源机构 | 中国科学院沈阳应用生态研究所 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346755 |
| 推荐引用方式 GB/T 7714 | 孙学凯.污泥施用对沙地生态系统土壤溶解性有机碳迁移转化的影响及其机制.2015. |
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