Patterns and driving factors of WUE and NUE in natural forest ecosystems along the North-South Transect of Eastern China
文献类型：期刊论文
| 作者 | Sheng Wenping(盛文萍) ; Ren Shujie ; Yu Guirui ; Fang Huajun ; Jiang Chunming ; Zhang Mi |
| 刊名 | JOURNAL OF GEOGRAPHICAL SCIENCES
 |
| 出版日期 | 2011 |
| 卷号 | 21期号:4页码:651-665 |
| 关键词 | CARBON-ISOTOPE DISCRIMINATION WATER-USE EFFICIENCY NITROGEN-USE EFFICIENCY ATMOSPHERIC CO2 RESPONSES DIOXIDE PLANTS SEQUESTRATION TEMPERATURE ENRICHMENT |
| 英文摘要 | From July 2008 to August 2008, 72 leaf samples from 22 species and 81 soil samples in the nine natural forest ecosystems were collected, from north to south along the North-South Transect of Eastern China (NSTEC). Based on these samples, we studied the geographical distribution patterns of vegetable water use efficiency (WUE) and nitrogen use efficiency (NUE), and analyzed their relationship with environmental factors. The vegetable WUE and NUE were calculated through the measurement of foliar delta(13)C and C/N of predominant species, respectively. The results showed: (1) vegetable WUE, ranging from 2.13 to 28.67 mg C g(-1) H(2)O, increased linearly from south to north in the representative forest ecosystems along the NSTEC, while vegetable NUE showed an opposite trend, increasing from north to south, ranging from 12.92 to 29.60 g C g(-1) N. (2) Vegetable WUE and NUE were dominantly driven by climate and significantly affected by soil nutrient factors. Based on multiple stepwise regression analysis, mean annual temperature, soil phosphorus concentration, and soil nitrogen concentration were responding for 75.5% of the variations of WUE (p<0.001). While, mean annual precipitation and soil phosphorus concentration could explain 65.7% of the change in vegetable NUE (p<0.001). Moreover, vegetable WUE and NUE would also be seriously influenced by atmospheric nitrogen deposition in nitrogen saturated ecosystems. (3) There was a significant trade-off relationship between vegetable WUE and NUE in the typical forest ecosystems along the NSTEC (p<0.001), indicating a balanced strategy for vegetation in resource utilization in natural forest ecosystems along the NSTEC. This study suggests that global change would impact the resource use efficiency of forest ecosystems. However, vegetation could adapt to those changes by increasing the use efficiency of shortage resource while decreasing the relatively ample one. But extreme impacts, such as heavy nitrogen deposition, would break this trade-off mechanism and give a dramatic disturbance to the ecosystem biogeochemical cycle. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China 30590381;National Basic Research Program of China 2010CB833504 31000211 |
| 语种 | 英语 |
| 公开日期 | 2011-09-09 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/5498]  |
| 专题 | 地理科学与资源研究所_研究生部 |
| 推荐引用方式 GB/T 7714 | Sheng Wenping,Ren Shujie,Yu Guirui,et al. Patterns and driving factors of WUE and NUE in natural forest ecosystems along the North-South Transect of Eastern China[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2011,21(4):651-665. |
| APA | Sheng Wenping,Ren Shujie,Yu Guirui,Fang Huajun,Jiang Chunming,&Zhang Mi.(2011).Patterns and driving factors of WUE and NUE in natural forest ecosystems along the North-South Transect of Eastern China.JOURNAL OF GEOGRAPHICAL SCIENCES,21(4),651-665. |
| MLA | Sheng Wenping,et al."Patterns and driving factors of WUE and NUE in natural forest ecosystems along the North-South Transect of Eastern China".JOURNAL OF GEOGRAPHICAL SCIENCES 21.4(2011):651-665. |
入库方式： OAI收割
来源：地理科学与资源研究所
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