气候变化领域集成服务门户(CCPortal): Linking above-ground biomass production to below-ground carbon fluxes across stocking, clone, fertilization, and understory elimination in Pinus radiata D.Don plantations, New Zealand

CCPortal

DOI	10.1016/j.foreco.2020.118469
	Linking above-ground biomass production to below-ground carbon fluxes across stocking, clone, fertilization, and understory elimination in Pinus radiata D.Don plantations, New Zealand
	KC M.; Mason E.G.; Bown H.E.
发表日期	2020
ISSN	0378-1127
卷号	477
英文摘要	The linkage between above-ground biomass production and below-ground carbon fluxes as influenced by silviculture has been insufficiently studied. We tested the effects of stocking, clone, fertilization, and follow-up herbicide treatments on below-ground carbon flux (BCF), above-ground biomass production (AGB), the ratio (BCF/AGB), tree diameter (DBH), height (H), basal area (G), and leaf area index (LAI) for a Pinus radiata D. Don plantation trial in the Canterbury region of New Zealand. Mixed-effects analysis of variance was carried out using data at the plot and clone levels. The H, DBH, G, AGB, BCF and the BCF/AGB ratio were influenced significantly by the main effects of stocking (p < .05), and the follow-up herbicide (p < .001). The main effects of clone had significant influence on H (p < .001), BCF (p < .01) and the BCF/AGB ratio (p < .01). Values of AGB and G increased with stand density, while DBH and H decreased with stand density. The significant stocking × follow-up herbicide interactions observed for DBH, G and AGB, suggested that follow-up weed control alleviated understory-induced water and nutrient stresses. Significant clone × follow-up herbicide interactions for DBH and AGB (p < .05), and clone × stocking interactions for G (p < .05), and no interaction of silvicultural treatments for BCF and BCF/AGB ratio were observed. Clones 1 and 3 exhibited greater AGB and smaller BCF/AGB ratio, compared to slower growing clones (i.e., Clones 4 and 5), suggesting certain clones were more productive above-ground at the expense of less carbon partitioned below-ground. These findings highlight that stocking, follow-up herbicide, and clone, in that order, had the greatest influence on above- and below-ground variables, suggesting that those silvicultural practices shifted carbon partitioning above-and below-ground. We conclude that well-performing clone planted with appropriate stand density and with follow-up weed control treatments may increase aboveground radiata pine productivity. © 2020 Elsevier B.V.
英文关键词	Above-ground; Below-ground; Carbon; Fertilization; Genotype; Partitioning; Stand density
语种	英语
scopus关键词	Biomass; Carbon; Cloning; Herbicides; Plants (botany); Weed control; Above ground biomass; Carbon partitioning; Control treatments; Herbicide treatment; Nutrient stress; Silvicultural practices; Silvicultural treatments; Stand densities; Forestry; aboveground biomass; basal area; belowground biomass; carbon flux; clone; coniferous tree; fertilizer application; herbicide; leaf area index; plantation forestry; silviculture; stocking density; variance analysis; Biomass; Carbon; Clones; DBH; Forestry; Herbicides; Production; Weed Control; Canterbury [South Island]; New Zealand; South Island; Pinus radiata; Radiata
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154982
作者单位	School of Forestry, University of Canterbury, Private Bag 4800, Christchurch, New Zealand; Ministry of Industry, Tourism, Forests and EnvironmentBagmati Province, Nepal; Faculty of Forestry, University of Chile, P.O. Box 9206, Santiago, Chile
推荐引用方式 GB/T 7714	KC M.,Mason E.G.,Bown H.E.. Linking above-ground biomass production to below-ground carbon fluxes across stocking, clone, fertilization, and understory elimination in Pinus radiata D.Don plantations, New Zealand[J],2020,477.
APA	KC M.,Mason E.G.,&Bown H.E..(2020).Linking above-ground biomass production to below-ground carbon fluxes across stocking, clone, fertilization, and understory elimination in Pinus radiata D.Don plantations, New Zealand.Forest Ecology and Management,477.
MLA	KC M.,et al."Linking above-ground biomass production to below-ground carbon fluxes across stocking, clone, fertilization, and understory elimination in Pinus radiata D.Don plantations, New Zealand".Forest Ecology and Management 477(2020).