文献类型：期刊文献

英文题名：The growth of Chinese fir is limited by nitrogen: Evidences from N:P ratio, N or P variability and NuRE based on a regional investigation

作者：Tong, Ran[1,2] Zhou, Benzhi[1,2] Jiang, Lina[1] Ge, Xiaogai[1,2] Cao, Yonghui[1,2]

第一作者：Tong, Ran;童冉

通信作者：Zhou, BZ[1];Zhou, BZ[2]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Zhejiang, Peoples R China;[2]State Forestry Adm, Qianjiangyuan Forest Ecosyst Res Stn, Hangzhou 311400, Zhejiang, Peoples R China

年份：2020

卷号：460

外文期刊名：FOREST ECOLOGY AND MANAGEMENT

收录：;EI(收录号：20200408064257);Scopus(收录号：2-s2.0-85078071267);WOS:【SCI-EXPANDED(收录号:WOS:000518874700020)】；

基金：This work was supported by the National Key Research and Development Program of China (2016YFD0600202-4) and Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2017ZX002-2).

语种：英文

外文关键词：N-limitation; Leaf stoichiometry; Spatial variation; Nutrient resorption; Environmental factors; Chinese fir

摘要：Plant growth and vegetation productivity were generally limited either by nitrogen (N) or phosphorus (P) worldwide. To date, our current understandings on plant nutrient limitation are primarily derived from site-specific studies. By taking account into more factors, studies on regional or larger scales might resolve the divergences effectively arisen from regional differences, which would help provide new insights for plant nutrient limitation. In this study, we made an attempt to evidence the particular element that limiting the growth of Clamingharnia lanceolata (Chinese fir) based on a regional investigation. Firstly, we found that leaf N:P ratio (11.49) was significantly lower than 14, which suggested and evidenced that the growth of Chinese fir was limited by N. Next, leaf N concentration was less affected by the environmental variables, showing low variability. Leaf P concentration and N:P ratio were significantly affected by soil P concentration (SP), mean annual temperature (MAT) and altitude (ALT), and both of them showed high variability. Hence under same regional environmental changes, the level of the variability in leaf N or P concentration might affect the N or P supply for plant growth. Thirdly, the P resorption efficiency (PRE) was significantly higher than N resorption efficiency (NRE). Leaf N:P ratio decreased with the increasing PRE and INRE - PREP. Overall, our findings suggested that in subtropical China, low leaf N:P ratios, low N variability under, and high PRE were three major pieces of evidence that induce N- limitation for the growth of Chinese fir.