Effects of land use, climate, topography and soil properties on regional soil organic carbon and total nitrogen in the Upstream Watershed of Miyun Reservoir, North China
文献类型：期刊论文
| 作者 | Wang, Shufang ; Wang, Xiaoke ; Ouyang, Zhiyun |
| 刊名 | Environmental Sciences & Ecology
 |
| 出版日期 | 2012 |
| 卷号 | 24期号:3页码:387-395 |
| 关键词 | soil organic carbon soil total nitrogen principal component analysis multiple regression analysis |
| ISSN号 | 1001-0742 |
| 中文摘要 | Soil organic carbon (SOC) and total nitrogen (TN) contents as well as their relationships with site characteristics are of profound importance in assessing current regional, continental and global soil C and N stocks and potentials for C sequestration and N conservation to offset anthropogenic emissions of greenhouse gases. This study investigated contents and distribution of SOC and TN under different land uses, and the quantitative relationships between SOC or TN and site characteristics in the Upstream Watershed of Miyun Reservoir, North China. Overall, both SOC and TN contents in natural secondary forests and grasslands were much higher than in plantations and croplands. Land use alone explained 37.2% and 38.4% of variations in SOC and TN contents, respectively. The optimal models for SOC and TN, achieved by multiple regression analysis combined with principal component analysis (PCA) to remove the multicollinearity among site variables, showed that elevation, slope, soil clay and water contents were the most significant factors controlling SOC and TN contents, jointly explaining 70.3% of SOC and 67.1% of TN contents variability. Only does additional 1.9% and 3% increase in the interpretations of SOC and TN contents variability respectively when land use was added to regressions, probably due to environment factors determine land use. Therefore, environmental variables were more important for SOC and TN variability than land use in the study area, and should be taken into consideration in properly evaluating effects of future land use changes on SOC and TN on a regional scale. |
| WOS记录号 | WOS:000301869300005 |
| 公开日期 | 2014-11-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7970]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Wang, Shufang,Wang, Xiaoke,Ouyang, Zhiyun. Effects of land use, climate, topography and soil properties on regional soil organic carbon and total nitrogen in the Upstream Watershed of Miyun Reservoir, North China[J]. Environmental Sciences & Ecology,2012,24(3):387-395. |
| APA | Wang, Shufang,Wang, Xiaoke,&Ouyang, Zhiyun.(2012).Effects of land use, climate, topography and soil properties on regional soil organic carbon and total nitrogen in the Upstream Watershed of Miyun Reservoir, North China.Environmental Sciences & Ecology,24(3),387-395. |
| MLA | Wang, Shufang,et al."Effects of land use, climate, topography and soil properties on regional soil organic carbon and total nitrogen in the Upstream Watershed of Miyun Reservoir, North China".Environmental Sciences & Ecology 24.3(2012):387-395. |
入库方式： OAI收割
来源：生态环境研究中心
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