Fine root C:N:P stoichiometry and its driving factors across forest ecosystems in northwestern China
文献类型：期刊论文
| 作者 | Cao, Yang1,2; Li, Yanan1,3; Zhang, Guangqi4; Zhang, Jing1,3; Chen, Meng1,3 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 737页码:10 |
| 关键词 | Fine root biomass Forest origin Leaf form Precipitation Soil C:N:P Temperature |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2020.140299 |
| 通讯作者 | Cao, Yang(yang.cao@nwsuaf.edu.cn) |
| 英文摘要 | Fine roots (52 mm in diameter) play a more significant role in regulating the biogeochemical cycles of forest ecosystems, but our current knowledge of fine root stoichiometry and its driving factors is extremely limited. In this study, fine root biomass (FRB) and their carbon (C), nitrogen (N) and phosphorus (P) concentrations were measured from dominant forests along environmental gradients in Northwestern China. The results showed that forest type (coniferous vs. broadleaved, and plantation vs. secondary forest) and climatic factors had no effects on FRB. FRB was only correlated with soil P, C:P and N:P in coniferous forests and N:P in secondary forests. Thus, forest type, soil C:N:P stoichiometry and climatic factors were less important to FRB. The fine root C and C:N and C:P were higher, and N and P were lower in coniferous than in broadleaved forests. Only fine root N concentration was higher in plantations than in secondary forests. The fine root C was positively correlated with soil C, N and C:N, C:P and N:P except in coniferous forests. The fine root N was negatively correlated soil C:N, C:P and N:P in plantations and C:N in broadleaved forests, but positively correlated with soil C, N, C:P and N:P in secondary forests. The fine root P was positively correlated with soil P in plantations and in coniferous forests, but negatively correlated with soil C:N, C:P and N:P in all forest types. The fine root C in broadleaved and in secondary forests was positively correlated with mean annual precipitation (MAP) and fine root N and N:P in plantations were negatively correlated with MAP. Only the fine root P and C:P in broadleaved forests were correlated with mean annual temperature (MAT). Collectively, forest type, soil C:N:P stoichiometry and climatic factors explained 29, 13 and 12% of the variation in the fine root C, N and P, and their most important explanatory variables were leaf form, soil C:N and soil C:P, respectively. These results advance our knowledge about the regional fine root stoichiometry and its driving factors and provide basic data for improving the key below-ground parameters for biogeochemical models. (C) 2020 Elsevier B.V. All rights reserved. |
| WOS关键词 | N-P STOICHIOMETRY ; TURNOVER RATES ; LOESS PLATEAU ; PHOSPHORUS STOICHIOMETRY ; TERRESTRIAL PLANTS ; CARBON CONTENT ; STAND AGE ; BIOMASS ; SOIL ; NITROGEN |
| 资助项目 | National Natural Science Foundation of China[41977418] ; National Natural Science Foundation of China[41201088] ; CAS Light ofWest China Program[XAB2017A02] ; National Key Research and Development Program of China[2016YFC0501703] ; National Key Research and Development Program of China[2017YFC0504605] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000553719700007 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; CAS Light ofWest China Program ; National Key Research and Development Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/158270]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Cao, Yang |
| 作者单位 | 1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China 4.Univ Montpellier, CIRAD, CNRS, INRA,IRD,AMAP, F-34000 Montpellier, France |
| 推荐引用方式 GB/T 7714 | Cao, Yang,Li, Yanan,Zhang, Guangqi,et al. Fine root C:N:P stoichiometry and its driving factors across forest ecosystems in northwestern China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,737:10. |
| APA | Cao, Yang,Li, Yanan,Zhang, Guangqi,Zhang, Jing,&Chen, Meng.(2020).Fine root C:N:P stoichiometry and its driving factors across forest ecosystems in northwestern China.SCIENCE OF THE TOTAL ENVIRONMENT,737,10. |
| MLA | Cao, Yang,et al."Fine root C:N:P stoichiometry and its driving factors across forest ecosystems in northwestern China".SCIENCE OF THE TOTAL ENVIRONMENT 737(2020):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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