文献类型：期刊文献

英文题名：Elevation alters carbon and nutrient concentrations and stoichiometry in Quercus aquifolioides in southwestern China

作者：Wang, Ao[1,3] Wang, Xue[1,2] Tognetti, Roberto[4,5] Lei, Jing-Pin[6] Pan, Hong-Li[7] Liu, Xing-Liang[7] Jiang, Yong[2] Wang, Xiao-Yu[2,8] He, Peng[2,8] Yu, Fei-Hai[1] Li, Mai-He[2,8]

第一作者：Wang, Ao

通信作者：Yu, FH[1];Li, MH[2];Li, MH[3]

机构：[1]Taizhou Univ, Zhejiang Prov Key Lab Plant Evolutionary Ecol & C, Taizhou 318000, Peoples R China;[2]Chinese Acad Sci, Inst Appl Ecol, Shenyang 110164, Liaoning, Peoples R China;[3]Beijing Forestry Univ, Coll Nat Conservat, Beijing 100083, Peoples R China;[4]Univ Molise, Dipartimento Agr Ambiente & Alimenti, I-86090 Campobasso, Italy;[5]Project Ctr Mt Forests MOUNTFOR, European Forest Inst, I-38010 San Michele All Adige, Italy;[6]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat State Forestry A, Beijing, Peoples R China;[7]Sichuan Acad Forestry, Chengdu 610081, Sichuan, Peoples R China;[8]Swiss Fed Res Inst WSL, Forest Dynam, Zuercherstr 111, CH-8903 Birmensdorf, Switzerland

年份：2018

卷号：622

起止页码：1463-1475

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000426349000142)】；

基金：We thank two anonymous reviewers for their valuable comments. This study was financially supported by the Fundamental Research Funds for the Academy of Forestry Sciences (CAFYBB2011ZD001), and the National Natural Science Foundation of China (41371076, 31570501).

语种：英文

外文关键词：Elevational gradient; Global warming; Non-structural carbohydrates; Nitrogen; Phosphorus

摘要：Elevation is a complex environmental factor altering temperature, light, moisture and soil nutrient availability, and thus may affect plant growth and physiology. Such effects of elevation may also depend on seasons. Along an elevational gradient of the Balang Mountain, southwestern China, we sampled soil and 2-year old leaves, 2-year old shoots, stem sapwood and fine roots (diameter < 5 mm) of Quercus aquifolioides at 2843, 2978, 3159, 3327, 3441 and 3589 m a.s.l. in both summer and winter. In summer, the concentrations of tissue non-structural carbohydrates (NSC) did not decrease with increasing elevation, suggesting that the carbon supply is sufficient for plant growth at high altitude in the growing season. The concentration of NSC in fine roots decreased with elevation in winter, and the mean concentration of NSC across tissues in a whole plant showed no significant difference between the two sampling seasons, suggesting that the direction of NSC reallocation among plant tissues changed with season. During the growing season, NSC transferred from leaves to other tissues, and in winter NSC stored in roots transferred from roots to aboveground tissues. Available soil N increased with elevation, but total N concentrations in plant tissues did not show any clear elevational pattern. Both available soil P and total P concentrations in all plant tissues decreased with increasing elevation. Thus, tissue N: P ratio increased with