GSTDTAP  > 气候变化
DOI10.1016/j.foreco.2019.03.012
Thinning increased fine root production, biomass, turnover rate and understory vegetation yield in a Chinese fir plantation
Wang, Dong1,2; Olatunji, Olusanya Abiodun3,4,5; Xiao, Jinlan6,7
2019-05-15
发表期刊FOREST ECOLOGY AND MANAGEMENT
ISSN0378-1127
EISSN1872-7042
出版年2019
卷号440页码:92-100
文章类型Article
语种英语
国家Peoples R China
英文摘要

Quantifying the fine root (FR) dynamics of understory plants and canopy trees is essential to accurately assess the impact of forest operations on forest production and ecological stability. However, such information has been poorly quantified, and little is known about the underlying mechanism of FR dynamics in response to human disturbances such as thinning. We investigated the FR dynamics and the understory vegetation of a Chinese fir plantation in southern China under four levels of thinning intensity (30, 50 and 70% of trees removed and uncut controls). We found that the total FR biomass, production and mortality, and turnover linearly increased with thinning intensity, and the FRs were stimulated more in the deeper soil layer (10-20 cm) than in the surface soil layer (0-10 cm). Across all stands, understory plants contributed 35-42% and 34-49% to the total biomass and production, respectively. The biomass and species richness of the understory plants increased with increasing thinning intensity. The principal component analysis indicated that the increased FR production and turnover rate of Chinese fir mainly result from increased understory plant richness and diversity, whereas the increased FR production and turnover rate in understory vegetation result from warmer soil and lower soil phosphorus (P). Our findings provide evidence for the positive effects of thinning on FR dynamics. The results suggest that the FR dynamics of understory plants could play a more critical role than expected in determining forest carbon (C) and nutrient cycling. The mechanism affecting FR dynamics following thinning differed between the understory plants and the canopy trees.


英文关键词Fine root dynamics Production Turnover rate Chinese fir plantation Thinning intensity
领域气候变化
收录类别SCI-E
WOS记录号WOS:000464297900010
WOS关键词FOREST ECOSYSTEMS ; PLANTED FORESTS ; PINE PLANTATION ; ORGANIC-CARBON ; SCOTS PINE ; DYNAMICS ; STAND ; INTENSITIES ; COMMUNITIES ; COMPETITION
WOS类目Forestry
WOS研究方向Forestry
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/183229
专题气候变化
作者单位1.China West Normal Univ, Coll Environm Sci & Engn, Nanchong 637000, Peoples R China;
2.China West Normal Univ, Inst Environm Sci, Nanchong 637000, Peoples R China;
3.Chinese Acad Sci, Chengdu Inst Biol, CAS Key Lab Mt Ecol Restorat & Bioresource Utiliz, Chengdu 610041, Peoples R China;
4.Chinese Acad Sci, Chengdu Inst Biol, Ecol Restorat Biodivers Conservat Key Lab Sichuan, Chengdu 610041, Peoples R China;
5.Univ Chinese Acad Sci, Beijing 100039, Peoples R China;
6.China West Normal Univ, Collaborat Innovat Ctr Tissue Repair Mat Engn Tec, Nanchong 637000, Peoples R China;
7.China West Normal Univ, Coll Life Sci, Nanchong 637000, Peoples R China
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GB/T 7714
Wang, Dong,Olatunji, Olusanya Abiodun,Xiao, Jinlan. Thinning increased fine root production, biomass, turnover rate and understory vegetation yield in a Chinese fir plantation[J]. FOREST ECOLOGY AND MANAGEMENT,2019,440:92-100.
APA Wang, Dong,Olatunji, Olusanya Abiodun,&Xiao, Jinlan.(2019).Thinning increased fine root production, biomass, turnover rate and understory vegetation yield in a Chinese fir plantation.FOREST ECOLOGY AND MANAGEMENT,440,92-100.
MLA Wang, Dong,et al."Thinning increased fine root production, biomass, turnover rate and understory vegetation yield in a Chinese fir plantation".FOREST ECOLOGY AND MANAGEMENT 440(2019):92-100.
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