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| 蒙古栎不同冠层部位叶片养分动态 | |
| 作者姓名： | Cheng XB Han SJ Zhang ZH Zhou YM Wang SQ Wang XJ |
| 作者单位： | 1. 中国科学院沈阳应用生态研究所,沈阳110016;中国科学院研究生院,北京100049 2. 中国科学院沈阳应用生态研究所,沈阳,110016 3. 吉林省林业科学研究院,长春l3003 |
| 基金项目： | 国家自然科学基金重点项目,环保公益性行业科研专项 |
| 摘 要： | 以长白山原始针阔叶混交林优势树种蒙古栎为对象,研究了6-10月生长季不同冠层叶片单位叶面积质量(LMA)、单位质量和单位叶面积的C、N、P含量变化,以及N、P的再吸收效率与利用效率.结果表明:在生长季,蒙古栎冠层上、下部叶片的LMA和单位叶面积C含量(Carea)表现出明显的月动态变化;单位叶面积N、P含量(Narea、Parea)的月变化趋势与单位质量N、P含量(Nmass、Pmass)相似,而用单位叶面积与单位质量表示的N、P再吸收效率无明显差异.冠层位置对N的再吸收效率和利用效率无明显影响,但冠层上部P的再吸收效率和利用效率显著高于冠层下部.在未来气候变化情景下,蒙古栎较高的生存力和竞争力有助于促进生态系统的养分循环. |
| 关 键 词： | 冠层部位 养分再吸收效率 养分利用效率 蒙古栎 长白山 |
Nutrient dynamics in Quercus mongolica leaves at different canopy positions |
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| Cheng XB,Han SJ,Zhang ZH,Zhou YM,Wang SQ,Wang XJ.Nutrient dynamics in Quercus mongolica leaves at different canopy positions[J].Chinese Journal of Applied Ecology,2011,22(9):2272-2278. | |
| Authors: | Cheng Xu-bing Han Shi-jie Zhang Zhong-hui Zhou Yu-mei Wang Shu-qi Wang Xue-juan |
| Institution: | CHENG Xu-bing1,2,HAN Shi-jie1,ZHANG Zhong-hui3,ZHOU Yu-mei1,WANG Shu-qi1,WANG Xue-juan1,2 (1Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China,2Graduate University of Chinese Academy of Sciences,Beijing 100049,3Jilin Provincial Academy of Forestry Sciences,Changchun 130033,China) |
| Abstract: | Taking the dominant tree species Quercus mongolica in natural coniferous-broadleaved mixed forest in Changbai Mountains as test object, this paper studied the variations of leaf dry mass per unit area (LMA), leaf carbon (C), nitrogen (N), and phosphorus (P) contents per unit mass and per unit area, as well as the leaf N and P resorption efficiency and use efficiency at upper and lower canopy positions during growth season (from June to October). In the growth season, and at both upper and lower canopy posit... |
| Keywords: | canopy position nutrient resorption efficiency nutrient use efficiency Quercus mongolica Changban Mountain |
| 本文献已被 CNKI 万方数据 PubMed 等数据库收录！ | |