Effect of thinning-induced gap size on soil CO2 efflux in a reforested spruce forest in the eastern Tibetan Plateau
文献类型：期刊论文
| 作者 | Pang, XY; Hu, B; Bao, WK; Vargas, TD; Tian, GL; Bao, WK (reprint author), Chinese Acad Sci, Chengdu Inst Biol, POB 416,9,Sect 4,Renmin Nan Rd, Chengdu 610041, Peoples R China. |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 220页码:1-9 |
| 关键词 | Soil Respirationl Thinningforest Gap Size Root Biomass Understory Spruce Plantation |
| DOI | 10.1016/j.agrformet.2016.01.004 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Understanding the effects of forest management practices (e.g. thinning) on soil respiration (R-s) is crucial for the accurate estimation of forest carbon budget. However, little is known about the response of R-s to forest thinning in the subalpine region and its linkage to changes in environmental factors induced by thinning. We aimed to quantify the response of R-s rate to various gap sizes following thinning treatments, and to explore the relationships between Rs and soil temperature and moisture and other biophysical factors in the different gap sizes. We applied the thinning by simulating gap formation (four gap sizes at 0, 74, 109 and 196 m(2)) in a 26-year old spruce plantation in the eastern Tibetan Plateau. We measured R-s monthly before (July to November 2008) and after (December 2008 to June 2012) thinning, as well as monthly soil temperature and moisture and other biophysical factors. Thinning tended to decrease fine root biomass, litterfall, soil extractable C, and increased soil temperature and soil moisture. The change in soil temperature and moisture depended on the time after thinning and the size of forest gap. We found that R-s showed an immediate decrease in initial stage after thinning, followed by a gradual increase with understory development towards the level at the control plot. Overall, thinning decreased R-s rate by 14.9%, 15.8% and 25.8% in the small, intermediate and large gap, respectively, as compared to the control. We concluded that the decrease in Rs rates by thinning in a spruce plantation was driven by the decline in tree root biomass and reduction in soil labile C. The positive effect of soil temperature elevation under thinning on Rs was masked by other factors, and the development of understory vegetation after thinning gradually offset the thinning-induced R-s reduction. Our results suggest the need to consider a set of abiotic and biotic factors induced by forest thinning intensity on R-s rates in modeling the response of soil C cycling to forest management practices. (C) 2016 Elsevier B.V. All rights reserved. |
| 学科主题 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 资助项目 | 中国科学院山地生态恢复与生物资源利用重点实验室 |
| 语种 | 英语 |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Science (CAS) [XDA05070306] ; Strategic Priority Research Program of the Chinese Academy of Science (CAS) [XDA05070306] ; National Natural Science Foundation of China [31270492] ; National Natural Science Foundation of China [31270492] ; National Science & Technology Pillar Program in the 12th Five-year Plan of China [2011BAC09B04-02] ; National Science & Technology Pillar Program in the 12th Five-year Plan of China [2011BAC09B04-02] ; Maoxian Mountain Ecosystem Research Station, CAS ; Maoxian Mountain Ecosystem Research Station, CAS ; Strategic Priority Research Program of the Chinese Academy of Science (CAS) [XDA05070306] ; Strategic Priority Research Program of the Chinese Academy of Science (CAS) [XDA05070306] ; National Natural Science Foundation of China [31270492] ; National Natural Science Foundation of China [31270492] ; National Science & Technology Pillar Program in the 12th Five-year Plan of China [2011BAC09B04-02] ; National Science & Technology Pillar Program in the 12th Five-year Plan of China [2011BAC09B04-02] ; Maoxian Mountain Ecosystem Research Station, CAS ; Maoxian Mountain Ecosystem Research Station, CAS |
| 源URL | [http://210.75.237.14/handle/351003/28133]  |
| 专题 | 成都生物研究所_生态研究 |
| 通讯作者 | Pang, XY; Bao, WK (reprint author), Chinese Acad Sci, Chengdu Inst Biol, POB 416,9,Sect 4,Renmin Nan Rd, Chengdu 610041, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Pang, XY,Hu, B,Bao, WK,et al. Effect of thinning-induced gap size on soil CO2 efflux in a reforested spruce forest in the eastern Tibetan Plateau[J]. AGRICULTURAL AND FOREST METEOROLOGY,2016,220:1-9. |
| APA | Pang, XY,Hu, B,Bao, WK,Vargas, TD,Tian, GL,&Bao, WK .(2016).Effect of thinning-induced gap size on soil CO2 efflux in a reforested spruce forest in the eastern Tibetan Plateau.AGRICULTURAL AND FOREST METEOROLOGY,220,1-9. |
| MLA | Pang, XY,et al."Effect of thinning-induced gap size on soil CO2 efflux in a reforested spruce forest in the eastern Tibetan Plateau".AGRICULTURAL AND FOREST METEOROLOGY 220(2016):1-9. |
入库方式： OAI收割
来源：成都生物研究所
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