globalchange  > 气候变化事实与影响
DOI: 10.3390/f10030201
WOS记录号: WOS:000464461000003
论文题名:
Nitrogen and Phosphorus Resorption in Planted Forests Worldwide
作者: Jiang, Dalong1,2; Geng, Qinghong1; Li, Qian3; Luo, Yiqi4; Vogel, Jason2; Shi, Zheng1; Ruan, Honghua1; Xu, Xia1
通讯作者: Xu, Xia
刊名: FORESTS
ISSN: 1999-4907
出版年: 2019
卷: 10, 期:3
语种: 英语
英文关键词: nutrient resorption ; nitrogen and phosphorous ; planted forests ; climate zones ; plant functional types ; precipitation ; green leaf nutrient
WOS关键词: NUTRIENT RESORPTION ; SENESCING LEAVES ; LEAF-N ; METASEQUOIA-GLYPTOSTROBOIDES ; SOIL NUTRIENTS ; EFFICIENCY ; PATTERNS ; FOLIAR ; CARBON ; WATER
WOS学科分类: Forestry
WOS研究方向: Forestry
英文摘要:

Nutrient resorption from senescing leaves is one of the plants' essential nutrient conservation strategies. Parameters associated with resorption are important nutrient-cycling constraints for accurate predictions of long-term primary productivity in forest ecosystems. However, we know little about the spatial patterns and drivers of leaf nutrient resorption in planted forests worldwide. By synthesizing results of 146 studies, we explored nitrogen (N) and phosphorus (P) resorption efficiency (NRE and PRE) among climate zones and tree functional types, as well as the factors that play dominant roles in nutrient resorption in plantations globally. Our results showed that the mean NRE and PRE were 58.98% +/- 0.53% and 60.21% +/- 0.77%, respectively. NRE significantly increased from tropical to boreal zones, while PRE did not significantly differ among climate zones, suggesting differential impacts of climates on NRE and PRE. Plant functional types exert a strong influence on nutrient resorption. Conifer trees had higher PRE than broadleaf trees, reflecting the adaptation of the coniferous trees to oligotrophic habitats. Deciduous trees had lower PRE than evergreen trees that are commonly planted in P-limited low latitudes and have long leaf longevity with high nutrient use efficiency. While non-N-fixing trees had higher NRE than N-fixing trees, the PRE of non-N-fixing trees was lower than that of N-fixing trees, indicating significant impact of the N-fixing ability on the resorption of N and P. Our multivariate regression analyses showed that variations in NRE were mainly regulated by climates (mean annual precipitation and latitude), while variations in PRE were dominantly controlled by green leaf nutrient concentrations (N and P). Our results, in general, suggest that the predicted global warming and changed precipitation regimes may profoundly affect N cycling in planted forests. In addition, green leaf nutrient concentrations may be good indicators for PRE in planted forests.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/130235
Appears in Collections:气候变化事实与影响

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作者单位: 1.Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Coll Biol & Environm, Nanjing 210037, Jiangsu, Peoples R China
2.Univ Florida, Sch Forest Resources & Conservat, Gainesville, FL 32608 USA
3.Nanjing Forestry Univ, Adv Anal & Testing Ctr, Nanjing 210037, Jiangsu, Peoples R China
4.No Arizona Univ, Ctr Ecosyst Sci & Soc, Flagstaff, AZ 86011 USA

Recommended Citation:
Jiang, Dalong,Geng, Qinghong,Li, Qian,et al. Nitrogen and Phosphorus Resorption in Planted Forests Worldwide[J]. FORESTS,2019-01-01,10(3)
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