气候变化领域集成服务门户(CCPortal): Tree growth rate and soil nutrient status determine the shift in nutrient-use strategy of Chinese fir plantations along a chronosequence

CCPortal

DOI	10.1016/j.foreco.2020.117896
	Tree growth rate and soil nutrient status determine the shift in nutrient-use strategy of Chinese fir plantations along a chronosequence
	Wu H.; Xiang W.; Ouyang S.; Xiao W.; Li S.; Chen L.; Lei P.; Deng X.; Zeng Y.; Zeng L.; Peng C.
发表日期	2020
ISSN	0378-1127
卷号	460
英文摘要	Nutrient resorption is a key nutrient-use strategy exhibited by perennial plants to overcome nutrient limitations and meet their nutritional demands. However, the factors that drive nutrient resorption with stand development remain largely unknown. In this study, we examined how a nutrient source (soil) and sink (trees) affected the resorption efficiency (RE) of nitrogen (N) and phosphorus (P). Fresh leaves, leaf litterfall, and soil samples were collected from a chronosequence of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook., Taxodiaceae) plantations at the ages of 3, 8–11, 16, 20, 25, 29, and 32 years. The N and P concentrations in stems, branches, leaves, coarse roots, and fine roots, stocks of N and P in soils, and the relative growth rate (RGR) of trees were measured. Fresh leaf N and P concentrations and RE decreased with stand age, while the N:P ratio in fresh leaves as well as the N and P concentrations in leaf litterfall increased. The RGR of trees declined with stand age. Soil P stocks increased but soil N stocks slightly decreased with stand age. A variation partitioning analysis revealed that the combined effect of RGR and soil P stocks on the RE of P (PRE) was stronger than the individual effect of each factor, while the RE of N (NRE) was greatly affected by the individual effect of RGR. With increasing age, Chinese fir plantations shifted from N-limiting to P-limiting conditions, and the nutrient-use strategy changed from “conservative consumption” to “resource spending”. These patterns were co-regulated by the tree growth rate and soil nutrient status. Thus, supply-demand relationships reflected the nutrient cycling status and could provide valuable information for sustainable nutrient management practices in tree plantations. © 2020 Elsevier B.V.
关键词	Forestry Plants (botany)Soils Cunninghamia lanceolata Nutrient cycling Plant nutrients Relative growth rate Resorption efficiencies Soil nutrients Supply-demand relationships Sustainable management Nutrients chronosequence concentration (composition)coniferous tree growth rate litterfall nutrient cycling nutrient dynamics nutrient limitation nutrient use phosphorus plantation forestry sampling soil nutrient source-sink dynamics sustainability Chinese Forestry Growth Rate Leaves Management Nutrients Plantations Soil Cunninghamia lanceolata Cupressaceae
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133010
推荐引用方式 GB/T 7714	Wu H.,Xiang W.,Ouyang S.,et al. Tree growth rate and soil nutrient status determine the shift in nutrient-use strategy of Chinese fir plantations along a chronosequence[J]. Forest Ecology and Management,2020,460.
APA	Wu H..,Xiang W..,Ouyang S..,Xiao W..,Li S..,...&Peng C..(2020).Tree growth rate and soil nutrient status determine the shift in nutrient-use strategy of Chinese fir plantations along a chronosequence.,460.
MLA	Wu H.,et al."Tree growth rate and soil nutrient status determine the shift in nutrient-use strategy of Chinese fir plantations along a chronosequence".460(2020).