Ecosystem carbon exchange over a warm-temperate mixed plantation in the lithoid hilly area of the North China
文献类型：SCI/SSCI论文
| 作者 | Li J.; Li J. |
| 发表日期 | 2012 |
| 关键词 | Mixed plantation Eddy covariance Net ecosystem carbon exchange Gross primary productivity Ecosystem respiration water-vapor exchange net primary productivity gross primary production dioxide exchange co2 exchange deciduous forest soil respiration pine forest interannual variability environmental controls |
| 英文摘要 | In recent decades, forest area in China increased rapidly by afforestation and reforestation, especially in its temperate parts. However, lack of information on carbon exchange in temperate plantations in China reduced the accuracy of estimation on regional carbon budget. In this study, CO2 flux was measured using the eddy covariance method over a broadleaf dominant mixed plantation in the lithoid hilly area of the North China. The results showed that annual maximum photosynthetic capacity (A(max)) varied from 0.81 to 1.22 mg CO2 m(-2) s(-1) and annual initial light use efficiency (alpha) from 0.014 to 0.026. Net CO2 uptake was depressed when vapor pressure deficit (VPD) was more than 2.5 kPa. Annual temperature sensitivity coefficient (Q(10)) for ecosystem respiration, ranged from 1.84 to 2.35, was negatively correlated with base ecosystem respiration (R-0) (P < 0.05). Annual R-0 decreased but Q(10) increased evidently when winter drought occurred. From 2006 to 2010, annual net ecosystem carbon exchange (NEE), Gross primary productivity (GPP) and ecosystem respiration (R-ec) were -355 +/- 34, 1196 +/- 21 and 841 +/- 43 g C m(-2) yr(-1), respectively. The warm-temperate mixed plantation in the lithoid hilly area of the North China was a strong carbon sink of the atmosphere, which was usually weaken when spring drought happened. (C) 2011 Elsevier Ltd. All rights reserved. |
| 出处 | Atmospheric Environment |
| 卷 | 49 |
| 页 | 257-267 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1352-2310 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/26790]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Li J.,Li J.. Ecosystem carbon exchange over a warm-temperate mixed plantation in the lithoid hilly area of the North China. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。