青海省主要造林树种的热值和灰分含量特征  

Characteristics of Caloric Values and Ash Contents of Main Afforestation Tree Species in Qinghai Province

作　　者：罗艳 唐才富 董旭 辛文荣 赵丰钰 

机构地区：[1]山水自然保护中心,北京100871 [2]青海省林业勘察设计院,西宁810007

出　　处：《中南林业调查规划》2015年第1期42-47,共6页Central South Forest Inventory and Planning

基　　金：青海省林业厅项目(QHGH2013-001)

摘　　要：为了解青藏高原森林的热值特征,对青海省主要造林树种的热值和灰分含量进行了分析。结果显示:1青海省云杉属和圆柏属5个乔木树种全株的干质量热值和去灰分热值分别在22.34 MJ/kg^22.92 MJ/kg之间和23.19 MJ/kg^23.48 MJ/kg之间,灰分含量在2.23%~3.54%之间,云杉属的干质量热值显著高于圆柏属,灰分含量显著低于圆柏属。2青海省主要乔木树种各器官的干质量热值和去灰分热值分别在21.20 MJ/kg^26.60 MJ/kg和22.20 MJ/kg^28.28 MJ/kg之间,灰分含量在0.43%~8.33%之间。就干质量热值而言,每种植物叶片的热值均显著高于其它器官;就去灰分热值而言,除紫果云杉外,每种植物叶片的热值均显著高于其它器官。就灰分含量而言,不同树种灰分含量最小的器官均为干。3树种热值和灰分含量均会受到年龄和海拔影响,但这种影响总体不具显著性。In order to understand the calorific values features of Tibet Plateau forest, this study analyzed the ca- loric values and ash content values of main afforestation tree species in Qinghai province. The results showed as below. ① Range of Gross caloric values, ash-free caloric values and ash content values in whole plants of 5 tree species in Picea and Sabirra were between 22.34 MJ/kg - 22.92 MJ/kg, and 23. 19 MJ/kg - 23.48 MJ/kg, and ash content values were between 2.23% and 3.54%. Calorific values of Picea were significantly higher than that of Sabina, while ash content values of Picea were significantly lower than that of Sabina. ②Range of Gross caloric values, ash-free caloric values in organs of all 5 species in Picea and Sabina were betwwen 221.20 MJ/kg ～ 26. 60 MJ/kg, and 22.20 MJ/kg～ 28. 28 MJ/kg, and ash content values were 0.43% 8.33%. The gross calorie values of leaves were significantly higher than that of other organs in all analyzed species. The ash-free caloric values of leaves were also significantly higher than that of other organs in all ana- lyzed species except Picea purpurea. The ash content values of stem were less than that of other organs. ③ Ca- loric values and ash content values of tree species in this study were affected by age and altitude, but this effect was not significant in general.

关 键 词：热值 灰分含量 圆柏属 云杉属 青海省 

分 类 号：Q947[生物学—植物学]