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| Water and nitrogen availability co-control ecosystem CO2 exchange in a semiarid temperate steppe | |
Zhang, Xiaolin1; Tan, Yulian; Li, Ang; Ren, Tingting; Chen, Shiping ; Wang, Lixin2; Huang, Jianhui
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| 2015 | |
| Source Publication | SCIENTIFIC REPORTS
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| ISSN | 2045-2322 |
| Volume | 5 |
| Abstract | Both water and nitrogen (N) availability have significant effects on ecosystem CO2 exchange (ECE), which includes net ecosystem productivity (NEP), ecosystem respiration (ER) and gross ecosystem photosynthesis (GEP). How water and N availability influence ECE in arid and semiarid grasslands is still uncertain. A manipulative experiment with additions of rainfall, snow and N was conducted to test their effects on ECE in a semiarid temperate steppe of northern China for three consecutive years with contrasting natural precipitation. ECE increased with annual precipitation but approached peak values at different precipitation amount. Water addition, especially summer water addition, had significantly positive effects on ECE in years when the natural precipitation was normal or below normal, but showed trivial effect on GEP when the natural precipitation was above normal as effects on ER and NEP offset one another. Nitrogen addition exerted non-significant or negative effects on ECE when precipitation was low but switched to a positive effect when precipitation was high, indicating N effect triggered by water availability. Our results indicate that both water and N availability control ECE and the effects of future precipitation changes and increasing N deposition will depend on how they can change collaboratively in this semiarid steppe ecosystem. |
| Subject Area | Multidisciplinary Sciences |
| DOI | 10.1038/srep15549 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | CARBON-DIOXIDE EXCHANGE ; SOIL RESPIRATION ; DIFFERENTIAL RESPONSES ; TEMPORAL VARIATION ; CLIMATE ; GRASSLAND ; PRECIPITATION ; DEPOSITION ; PULSES ; SNOW |
| WOS Research Area | Science Citation Index Expanded (SCI-EXPANDED) |
| WOS ID | WOS:000363315100001 |
| Publisher | NATURE PORTFOLIO |
| Subtype | Article |
| Publication Place | BERLIN |
| Funding Organization | National Natural Science Foundation of China [31430016] ; Strategic Priority Research Program on Soil and Microbes of the Chinese Academy of Sciences [XDB15010401] |
| Corresponding Author Email | spchen@ibcas.ac.cn ; jhhuang@ibcas.ac.cn |
| OA | Green Submitted, Green Published, gold |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ibcas.ac.cn/handle/2S10CLM1/25964 |
| Collection | 植被与环境变化国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.IUPUI, Dept Earth Sci, Indianapolis, IN 46202 USA |
| Recommended Citation GB/T 7714 | Zhang, Xiaolin,Tan, Yulian,Li, Ang,et al. Water and nitrogen availability co-control ecosystem CO2 exchange in a semiarid temperate steppe[J]. SCIENTIFIC REPORTS,2015,5. |
| APA | Zhang, Xiaolin.,Tan, Yulian.,Li, Ang.,Ren, Tingting.,Chen, Shiping.,...&Huang, Jianhui.(2015).Water and nitrogen availability co-control ecosystem CO2 exchange in a semiarid temperate steppe.SCIENTIFIC REPORTS,5. |
| MLA | Zhang, Xiaolin,et al."Water and nitrogen availability co-control ecosystem CO2 exchange in a semiarid temperate steppe".SCIENTIFIC REPORTS 5(2015). |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Zhang-2015-Water and（3057KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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