Ecosystem carbon exchange under different land use on the Qinghai-Tibetan plateau
文献类型：期刊论文
| 作者 | Luo, C. -Y. ; Zhu, X. -X. ; Wang, S. -P. ; Cui, S. -J. ; Zhang, Z. -H. ; Bao, X. -Y. ; Zhao, L. ; Li, Y. ; Zhao, X. -Q. |
| 刊名 | PHOTOSYNTHETICA
 |
| 出版日期 | 2015-12-01 |
| 英文摘要 | There is a great uncertainty about the effect of land use change on grassland ecosystem in the Tibetan Plateau. Net ecosystem carbon exchange (NEE) was measured for native alpine meadow with winter grazing (NAM), abandoned cropland/pasture (APL), perennial Elymus nutans (PEN), and annual oat pasture (AO) on the Tibetan plateau, during the growing seasons in 2009 and 2010 using a transparent chamber technique (Licor-6400). AO significantly decreased annual average NEE by 21.6, 23.7, and 15.7% compared to PEN, NAM, and APL during the growing season in 2010. Compared to PEN, NAM, and APL, AO significantly decreased average ecosystem respiration (R-e) by 21.1, 52.3, and 39.3%, respectively, during the growing season in 2009. Soil moisture and total aboveground and belowground biomass together explained 39.6% of NEE variation and 71% in gross primary productivity variation. Soil moisture and belowground biomass explained about 83.1% of the R-e variation. Our results indicated that it is possible to convert APL to PEN in the region because it could result in a higher NEE together with higher forage production compared to AO.; There is a great uncertainty about the effect of land use change on grassland ecosystem in the Tibetan Plateau. Net ecosystem carbon exchange (NEE) was measured for native alpine meadow with winter grazing (NAM), abandoned cropland/pasture (APL), perennial Elymus nutans (PEN), and annual oat pasture (AO) on the Tibetan plateau, during the growing seasons in 2009 and 2010 using a transparent chamber technique (Licor-6400). AO significantly decreased annual average NEE by 21.6, 23.7, and 15.7% compared to PEN, NAM, and APL during the growing season in 2010. Compared to PEN, NAM, and APL, AO significantly decreased average ecosystem respiration (R-e) by 21.1, 52.3, and 39.3%, respectively, during the growing season in 2009. Soil moisture and total aboveground and belowground biomass together explained 39.6% of NEE variation and 71% in gross primary productivity variation. Soil moisture and belowground biomass explained about 83.1% of the R-e variation. Our results indicated that it is possible to convert APL to PEN in the region because it could result in a higher NEE together with higher forage production compared to AO. |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/5488]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 推荐引用方式 GB/T 7714 | Luo, C. -Y.,Zhu, X. -X.,Wang, S. -P.,et al. Ecosystem carbon exchange under different land use on the Qinghai-Tibetan plateau[J]. PHOTOSYNTHETICA,2015. |
| APA | Luo, C. -Y..,Zhu, X. -X..,Wang, S. -P..,Cui, S. -J..,Zhang, Z. -H..,...&Zhao, X. -Q..(2015).Ecosystem carbon exchange under different land use on the Qinghai-Tibetan plateau.PHOTOSYNTHETICA. |
| MLA | Luo, C. -Y.,et al."Ecosystem carbon exchange under different land use on the Qinghai-Tibetan plateau".PHOTOSYNTHETICA (2015). |
入库方式： OAI收割
来源：西北高原生物研究所
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