北京林业大学学报2011，Vol.33Issue(1)：11-15,5.
长白山阔叶红松林中水曲柳根呼吸及影响因素
respiration of Fraxinus mandushurica and its controls in broadleaf-Korean pine mixed forest of Changbai mountains.
摘要
Abstract
To study the seasonal variation of root respiration of Fraxinus mandushurica and its controls in broadleaf-Korean pine mixed forest of Changbai mountains, monthly root respiration rate was measured using in vitro root method from May to October 2007, and air temperature, soil temperature, soil moisture and root N content were determined simultaneously. The results showed that the root respiration rate of four age classes had an obvious seasonal variation, with the maximum occurring in July and the minimum in October. The root respiration rate ranged between 1.69 and 9.74 μmol/( g· s) during the growing season. The root respiration rate increased with increasing air temperature, soil temperature and root N content. More soil water in a certain range improved root respiration rate, but excessive water in soil, on the contrary, restrained root respiration rate. The response of the root respiration to temperature differed with age class, and the Q10 value ranged from 1.54 to 2.89, which increased with increasing forest age.关键词
长白山/阔叶红松林/水曲柳/根系呼吸Key words
Changbai mountains/ broadleaf-Korean pine mixed forest/ Fraxinus mandushurica/ root respiration分类
生物科学引用本文复制引用
任军,徐程扬,潘琳,林玉梅,章林,王晓娜..长白山阔叶红松林中水曲柳根呼吸及影响因素[J].北京林业大学学报,2011,33(1):11-15,5.基金项目
国家自然科学基金项目(30571483)、教育部博士点基金项目(20050022007). （30571483）
