华北地区油松林主要乔木物种叶片氮磷化学计量特征-安徽农业大学进站页.PDF

安徽农业大学学报, 2012, 39(2): 247-251 Journal of Anhui Agricultural University 网络出版时间：2012-02-29 14:21 [URL] /kcms/detail/34.1162.S1421.022.html 华北地区油松林主要乔木物种叶片氮磷化学计量特征 张 业，任一星，姚 婧，李 颖，杨 松，侯继华* (北京林业大学省部共建森林培育与保护重点实验室，北京 100083) 摘 要：植物体内特别是叶片N 、P 含量特征一直是植物生理生态学研究的一个热点。以内蒙古黑里河、北京 松山、山西太岳山3 个地区的油松林为研究对象，分析了油松和阔叶乔木叶片N 、P 化学计量特征。结果表明，13 个乔木树种叶片N 含量、P 含量及N/P 的范围分别为0.934 4% ～4.898 7% 、0.079 0% ～0.655 5% 、3.632 8 ～35.430 2； 叶片N 含量与P 含量之间呈极显著正相关 (r=0.589, P0.01) ，而叶片P 含量与N/P 之间呈极显著负相关(r= －0.618, P0.01)；3 个地区油松叶片N 含量和P 含量均低于阔叶树种叶片N 含量和P 含量，说明阔叶树种叶片具有较高的 N 、P 储存能力； 黑里河地区油松叶片的N/P 显著小于阔叶乔木叶片N/P (P0.01) ，而松山和太岳山地区油松叶片 N/P 与阔叶乔木叶片N/P 的差异性不显著；油松叶片N 含量和P 含量的顺序均为太岳山黑里河松山，阔叶乔木 叶片N 含量和P 含量的顺序均为黑里河松山太岳山，说明太岳山地区的油松具有更高的N 、P 储存能力，而黑 里河地区的阔叶乔木具有更高的N 、P 储存能力。 关键词：氮磷含量；氮磷比；天然油松林；温带针叶林 中图分类号：Q142; S791.254 文献标识码：A 文章编号：1672−352X (2012)02−0247−05 Leaf nitrogen and phosphorous stoichiometry of trees in Pinus tabulaeformis Carr stands, North China ZHANG Ye, REN Yi-xing, YAO Jing, LI Ying, YANG Song, HOU Ji-hua (Key Laboratory for Silviculture and Conservation of Ministry of Education and Beijing, Beijing Forestry University, Beijing 100083) Abstract: Nitrogen (N) and phosphorous (P) stoichiometry in plant leaves have been studied intensively with recent focus on large-scale patterns and driving mechanisms. An experiment was conducted in Hei Lihe of Inner Mongolia Autonomous Region, Song Mountain of Beijing and Taiyue Mountain of Shanxi Province to understand the N and P stoichiometry between Pinus tabulaeformis and broad-leaf trees in nature Pinus tabulaeformis Carr. Leaf stoichiometry showed large variations with N ranged from 0.934 4% to 4.898 7%, P from 0.079 0% to 0.655 5%, and N/P from 3.632 8 t