Leaf nitrogen and phosphorus resorption of woody species in response to climatic conditions and soil nutrients： a meta-analysis

作     者：Tao Yan Jiaojun Zhu Kai Yang 

作者机构：CAS Key Laboratory of Forest Ecology and Management Institute of Applied Ecology Shenyang 110016 People' s Republic of China Qingyuan Forest CERN Chinese Academy of Sciences Shenyang 110016 People's Republic of China University of Chinese Academy of Sciences Beijing 100049 People's Republic of China 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2018年第29卷第4期

页      面：904-912页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0907[农学-林学] 07[理学] 0829[工学-林业工程] 0901[农学-作物学] 0713[理学-生态学] 

基　　金：funded by the National Basic Research Program of China(973 Program)(2012CB416906) 

主　　题：Global Climate change Nutrient resorptionefficiency Tree Shrub 

摘      要：Nutrient resorption before abscission is an important nutrient conservation mechanism regulated by climatic conditions and soil nutrients. However, our current understanding of leaf nutrient resorption is primarily derived from site-specific studies or from the use of greenleaf nutrient concentrations to represent those in soils. It remains unknown how nutrient resorption responds to natural soil-nutrient concentrations at a global scale. The effects of plant functional groups, climatic conditions, and soil nutrients and their interactions on leaf nutrient resorption are also unknown. In this study, we established a global database derived from 85 published papers, including 547 reports of nitrogen and phosphorus resorption efficiency （NRE and PRE）, climatic factors （LAT, latitude; MAT, mean annual temperature; MAP, mean annual precipitation） and soil-nutrient data （STN, soil total nitrogen; STP, soil total phosphorus） across 111 research sites. The results demonstrated that mean NRE and PRE were 48.4 and 53.3%, respectively. NRE of trees was lower than those of shrubs. NRE and PRE of coniferous species were both higher than those of broad-leaved species. Evergreen species had higher PRE than did deciduous species. NRE was negatively related to STN, but PRE and STP were not related. Both NRE and PRE decreased with increasing MAT and MAP but increased with increasing LAT. Plant functional groups, climate and soil nutrients jointly explained 22 and 32% of the variations in NRE and PRE, respectively. It is important to note that climate （especially MAT） explained 12 and 29% of the variations in NRE and PRE, respectively, implying that continuing global warming will exert an increasingly profound influence on plant nutrient cycles.