气候变化领域集成服务门户(CCPortal): Contrasting effects of N addition on the N and P status of understory vegetation in plantations of sapling and mature Larix principis-rupprechtii

CCPortal

DOI	10.1093/jpe/rty023
	Contrasting effects of N addition on the N and P status of understory vegetation in plantations of sapling and mature Larix principis-rupprechtii
	Yan, Tao; Qu, Tiantian; Song, Huanhuan; Ciais, Philippe; Piao, Shilong; Sun, Zhenzhong; Zeng, Hui
通讯作者	Zeng, H (通讯作者)
发表日期	2018
ISSN	1752-9921
EISSN	1752-993X
起始页码	843
结束页码	852
卷号	11 期号:6
英文摘要	Aims The productivity of forest plantations in temperate areas is often limited by nitrogen (N), but may shift towards phosphorus (P) limitation with increasing atmospheric N deposition. Nutrient resorption is a nutrient conservation strategy in plants. Although data on nutrient resorption are available for overstory trees, there are few data for understory vegetation. Methods We examined leaf N and P concentrations and N and P resorption efficiencies (NRE and PRE, respectively) in eight understory species in 11- and 45-year-old Larix principis-rupprechtii stands subjected to N supplementation over a 3-year period. Important findings Leaf N concentrations and N:P ratios increased and P concentrations decreased, with N input in species within the 45-year-old stand, but not in the 11-year-old stand. NRE and PRE were not altered by N input in any of the species in either stand, but N resorption proficiency decreased and P resorption proficiency increased, in the species in the 45-year-old stand. Thus, the growth of understory species may be more P-limited in the 45- versus 11-year-old stand, and nutrient resorption proficiency was more sensitive to N addition than nutrient resorption efficiency. These results will improve the understanding of nutrient use strategies and their responses to N addition in understory vegetation. The contrasting effects of N addition on nutrient status between stand ages cannot be ignored when modeling ecosystem nutrient cycling under global N deposition conditions.
关键词	CHRONIC NITROGEN ADDITIONS NUTRIENT RESORPTION PHOTOSYNTHETIC CAPACITY PHOSPHORUS LIMITATION LITTER DECOMPOSITION LARCH PLANTATIONS SOIL RESPIRATION SENESCED LEAVES FOREST TEMPERATE
英文关键词	larch plantation; N addition; nutrient resorption; stand age; understory species
语种	英语
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS记录号	WOS:000456053600005
来源期刊	JOURNAL OF PLANT ECOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259335
推荐引用方式 GB/T 7714	Yan, Tao,Qu, Tiantian,Song, Huanhuan,et al. Contrasting effects of N addition on the N and P status of understory vegetation in plantations of sapling and mature Larix principis-rupprechtii[J]. 中国科学院青藏高原研究所,2018,11(6).
APA	Yan, Tao.,Qu, Tiantian.,Song, Huanhuan.,Ciais, Philippe.,Piao, Shilong.,...&Zeng, Hui.(2018).Contrasting effects of N addition on the N and P status of understory vegetation in plantations of sapling and mature Larix principis-rupprechtii.JOURNAL OF PLANT ECOLOGY,11(6).
MLA	Yan, Tao,et al."Contrasting effects of N addition on the N and P status of understory vegetation in plantations of sapling and mature Larix principis-rupprechtii".JOURNAL OF PLANT ECOLOGY 11.6(2018).