文献类型：期刊文献

英文题名：Calorific values and ash contents of different parts of Masson pine trees in southern China

作者：Zeng, Wei-sheng[1] Tang, Shou-zheng[2] Xiao, Qian-hui[3]

第一作者：Zeng, Wei-sheng

通信作者：Zeng, WS[1]

机构：[1]Acad Forest Inventory & Planning, State Forestry Adm, Beijing 100714, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forest Resources Informat Tech, Beijing 100091, Peoples R China;[3]State Forestry Adm, Cent South Forest Inventory & Planning Inst, Changsha 410014, Hunan, Peoples R China

年份：2014

卷号：25

期号：4

起止页码：779-786

外文期刊名：JOURNAL OF FORESTRY RESEARCH

收录：;Scopus(收录号：2-s2.0-84919949855);WOS:【SCI-EXPANDED(收录号:WOS:000344447900006)】；

基金：Project funding: This work was initiated as part of the National Biomass Modeling Program in Continuous Forest Inventory (NBMP-CFI) funded by the State Forestry Administration of China.

语种：英文

外文关键词：ash-free calorific value; ash content; gross calorific value; hypothesis testing; regression analysis; Pinus massoniana

摘要：Calorific value of plants is an important parameter for evaluating and indexing material cycles and energy conversion in forest ecosystems. Based on mensuration data of 150 sample sets, we analyzed the calorific value (CV) and ash content (AC) of different parts of Masson pine (Pinus massoniana) trees in southern China using hypothesis testing and regression analysis. CV and AC of different tree parts were almost significantly different (P<0.05). In descending order, ash-free calorific value (AFCV) ranked as foliage > branch > stem bark > root > stem wood, and AC ranked as foliage > stem bark > root > branch > stem wood. CV and AC of stem wood from the top, middle and lower sections of trees differed significantly. CV increased from the top to the lower sections of the trunk while AC decreased. Mean gross calorific value (GCV) and AFCV of aboveground parts were significantly higher than those of belowground parts (roots). The mean GCV, AFCV and AC of a whole tree of Masson pine were 21.54 kJ/g, 21.74 kJ/g and 0.90%, respectively. CV and AC of different tree parts were, to some extent, correlated with tree diameter, height and origin.