浙江农林大学学报2012，Vol.29Issue(4)：482-490,9.
不同恢复模式下干热河谷幼龄印楝和大叶相思生物量及其分配
Biomass and allocation of young Azadirachta indica and A cacia auriculiformis for different restoration patterns in dry-hot valley
摘要
Abstract
To understand biomass and its allocation in tree species for plantations using different restoration patterns for dry-hot areas, and to evaluate the benefits of mixed patterns of tree species, biomass and allocation characteristics in nine-year-old Azadirachta indica and Acacia auric uliformis were studied in the dry-hot Yuanmou Valley. Data from sample trees were averaged to determine biomass and allocation, and 17 Azadirachta indica trees and 16 Acacia auric uliformis trees in different diameter classes were cut to build allometric equations. One-way ANOVA showed no significant differences between biomass per plant of Azadirachta indica or Acacia auriculiformis in the pure and mixed plantations. Biomass in the mixed plantation was 16.525 t·hm-2; with Azadirachta indica it was 7.837 t·hm-2; and for Acacia auriculiformis it was 27.802 t·hm-2. Biomass of Azadirachta indica organs varied as follows: in the pure plantation; stem＞root＞branch＞bark＞leaf and in the mixed plantation; stem＞branch＞root＞leaf＞bark; whereas Acacia auriculiformis varied as follows: in the pure plantation; branch ＞stem＞root＞leaf＞bark and in the mixed plantation; stem＞branch＞root＞ leaf＞bark. The root/shoot ratio of Azadirachta indica in the mixed plantation (0.280) was significantly smaller (P<0.05) than in the pure plantation(0.400) and for Acacia auriculiformis mixed (0.163) it was larger (P> 0.05) than the pure plantation (0.132). Relationships between organs or the organ and stem diameter (D) or stem diameter square multiplied by tree height (D2H) of the two species showed allometry with an allometric equation being y=axb. The allometric rate of the organs was as follows; for Azadirachta indica-branch>leaf and stem＞root with aboveground＞belowground; whereas for Acacia auriculifomiis-branch＞stem＞root＞leaf with aboveground＞belowground. In the dry-hot valley, when the two species were planted in the mixed pattern and compared to the pure plantation, biomass increased for Azadirachta indica and decreased for Acacia auriculiformis with biomass allocation for organs changing for the same tree species in different restoration patterns. [Ch, 4 tab. 38 ref.]关键词
森林生态学/干热河谷/印楝/大叶相思/生物量分配/恢复模式Key words
forest ecology/ dry-hot valley/ Azadirachta indica/ Acacia auriculiformis / biomass allocation/ restoration pattern分类
农业科技引用本文复制引用
高成杰,唐国勇,孙永玉,张春华,谢青海,李昆..不同恢复模式下干热河谷幼龄印楝和大叶相思生物量及其分配[J].浙江农林大学学报,2012,29(4):482-490,9.基金项目
“十二五”国家科技支撑计划项目(2011BAD38B0105) （2011BAD38B0105）
国家林业公益性行业专项(201104002-3-2) （201104002-3-2）
中国林科院资源昆虫研究所基本科研业务费专项(riricaf201001M) （riricaf201001M）
金沙江干热河谷高效水保林构建技术研究示范项目(2011BAD38B0404) （2011BAD38B0404）
