Caloric values and ash content of six dominant tree species in an evergreen broadleaf forest of Ailaoshan，Yunnan Province
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摘要: 测定了云南省哀牢山国家级自然保护区常绿阔叶林6种优势植物各器官的热值、养分和灰分。结果表明：6种植物各器官的干质量热值和灰分因种而异，且同种植物不同器官之间热值存在明显差异。6种植物各器官的干质量热值变化范围是：叶19.01 ～ 23.41 kJg-1，枝19.22 ～ 21.47 kJg-1，皮18.22 ～ 21.24 kJg-1，干19.32 ～ 21.27 kJg-1，根18.89 ～ 20.90 kJg-1；6种植物平均干质量热值大小顺序为木果柯Lithocarpus xylocarpus＞南洋木荷Schima noronhae＞黄心树Machilus bombycina＞景东冬青Ilex gintungensis＞蒙自连蕊茶Camellia forrestii＞变色锥Castanopsis rufescens，去灰分热值大小顺序为木果柯＞黄心树＞南洋木荷＞景东冬青＞变色锥＞蒙自连蕊茶，都和植物的优势度顺序没有关系。表4参22Abstract: To study the characteristic of the caloric value and ash content of dominant tree species in an evergreen broadleaf forest in Ailaoshan National Nature Reserve，Yunnan Province，the caloric value and ash content of six dominant tree species：Lithocarpus xylocarpus，Schima noronhae，Machilus bombycina，Ilex gintungensis，Camellia forrestii，and Castanopsis rufescens，were analyzed respectively on leaves，branches，trunks，trunk barks，and roots by sampling in the field and analyzing in the laboratory. Results showed ranges of gross caloric value of six dominant species were（in kJg-1） 19.0 － 23.41 for leaves，19.22 － 21.47 for branches，18.22 － 21.24 for trunk bark，19.32 － 21.27 for trunks，and 18.89 － 20.90 for roots. Tree gross caloric value ranked：L. xylocarpus ＞ S. noronhae ＞ M. bombycina ＞ I. gintungensis ＞ C. forrestii ＞ C. rufescens，whereas the rank of ash-free caloric values was：L. xylocarpus ＞ M. bombycina ＞ S. noronhae ＞ I. gintungensis ＞ C. rufescens ＞ C. forrestii. Both gross caloric values and ash-free caloric values were not consistent with the sequence of the importance value of these tree species. The caloric value were correlated remarkably with ash content （P＜0.01）.［Ch，4 tab. 22 ref.］
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https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2010.02.015
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