Age-Related Modulation of the Nitrogen Resorption Efficiency Response to   Growth Requirements and Soil Nitrogen Availability in a Temperate Pine   Plantation

doi:10.1007/s10021-016-9962-5

CORC > 北京大学 > 城市与环境学院

	Age-Related Modulation of the Nitrogen Resorption Efficiency Response to Growth Requirements and Soil Nitrogen Availability in a Temperate Pine Plantation
	Sun, Zhenzhong ; Liu, Lingli ; Peng, Shushi ; Penuelas, Josep ; Zeng, Hui ; Piao, Shilong
刊名	ECOSYSTEMS
	2016
关键词	nitrogen resorption green leaves senesced leaves nitrogen requirement nitrogen deposition stand age plant-available nitrogen annual stand biomass production ASPEN POPULUS-TREMULOIDES LEAF-LITTER DECOMPOSITION NUTRIENT RESORPTION STAND AGE FOREST GROWTH DYNAMICS LEAVES RETRANSLOCATION SEEDLINGS PATTERNS
DOI	10.1007/s10021-016-9962-5
英文摘要	Nitrogen (N) resorption is a key strategy for conserving N in forests, and is often affected by soil nutrient condition and N sink strength within the plant. However, our understanding of the age-related pattern of N resorption and how increasing N deposition will affect this pattern is limited. Here, we investigated N resorption along a chronosequence of stands ranging in age from 2 to 100 years old, and conducted a 4-year exogenous N input experiment in stands at age class 11, 20, and 45 in a Larix Principis-rupprechtii plantation in north China. We found a logarithmic increase in leaf N resorption efficiency (NRE) and green leaf N concentration, and a logarithmic decrease in senesced-leaf N concentration along the stand-age chronosequence. Leaf NRE was negatively correlated with plant-available N concentration. Stand-level N resorption was positively correlated with the annual N requirement for tree growth. N resorption contributed to 45, 62, and 68% of the annual N supply in the 11-, 20-, and 45-year-old stands, respectively. Our exogenous N input experiment showed that leaf NRE in the 11- and 20-year-old stands decreased 17 and 12% following a 50-kg N ha(-1) y(-1) input. However, leaf NRE was not affected in the 45-year-old stand. The increases in leaf NRE and the contribution of N resorption to annual N supply along stand ages suggested that, with stand development, tree growth depends more on N resorption to supply its N need. Furthermore, the leaf NRE of mature stand was not decreased under exogenous N input, suggesting that mature stands can be stronger sinks for N deposition than young stands due to their higher capacity to retain the deposited N within plants via internal cycle. Ignoring age-related N use strategies can lead to a bias in N cycle models when evaluating forest net primary production under increasing global N deposition.; National Natural Science Foundation of China [41401096, 41171202, 41125004]; National Youth Top-notch Talent Support Program in China; European Research Council Synergy [ERC-2013-SyG675 610028]; SCI(E); ARTICLE; lingli.liu@ibcas.ac.cn; slpiao@pku.edu.cn; 4; 698-709; 19
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/438128]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Sun, Zhenzhong,Liu, Lingli,Peng, Shushi,et al. Age-Related Modulation of the Nitrogen Resorption Efficiency Response to Growth Requirements and Soil Nitrogen Availability in a Temperate Pine Plantation[J]. ECOSYSTEMS,2016.
APA	Sun, Zhenzhong,Liu, Lingli,Peng, Shushi,Penuelas, Josep,Zeng, Hui,&Piao, Shilong.(2016).Age-Related Modulation of the Nitrogen Resorption Efficiency Response to Growth Requirements and Soil Nitrogen Availability in a Temperate Pine Plantation.ECOSYSTEMS.
MLA	Sun, Zhenzhong,et al."Age-Related Modulation of the Nitrogen Resorption Efficiency Response to Growth Requirements and Soil Nitrogen Availability in a Temperate Pine Plantation".ECOSYSTEMS (2016).