喀斯特森林林分环境对光皮桦幼树生物量的影响  

Effects of different environment of Karst forest on the biomass of Betula luminifera saplings

作　　者：杨瑞[1] 喻理飞[1] 罗云 罗远飞 

机构地区：[1]贵州大学林学院,贵州贵阳550025 [2]修文林业绿化局,贵州修文550200

出　　处：《南京林业大学学报（自然科学版）》2009年第1期143-145,共3页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家“十一五”科技支撑计划(2006BAD03A1006-2;2006BAC01A09);林业新技术新产品中试项目([2002]林科中字04号);贵州省科技成果推广项目(黔科合成字(2005)500103);贵州省优秀人才基金项目(黔科合人字(2005)0529号);教育部重点项目(205141)

摘　　要：采用幂函数生物量模型,对喀斯特森林不同林分环境中136株2～9年生光皮桦幼树的地上部分、树干、枝和叶生物量的分配关系进行研究,得出了林缘木生物量地上部分、干、枝、叶的估测模型,模型的拟合优度均在0.90以上。对比分析表明地径模型最客观反映林木生物量变化规律,该模型适用的地径范围为0.4～8.0cm。Biomass of Betula luminifera samplings （2-9 years old, 136 saplings）in different environments of Karst forest for above-ground individual and its allocation among stem, branch and leaf were studied using power function model. The results showed that estimation model of the biomass on the edge of forest was Wo = 0. 824 3 （D^2H）^0.8340, Ws = 0. 208 7 （ D^2H） ^0. 9214, Wb = 0. 219 1 （ D^2 H）^ 0.7982, Wl = 0. 522 5 （D^2H） ^0. 6880 respectively. The estimation model of the biomass in the middle of forest was Wo = 1. 184 8 （D^2H）^0.7479, Ws = 0. 515 1 （D^2H）^0.7887, Wb = 0. 204 8 （D^2H）^0.7626, Wl = 0.5089 （D^2H）^ 0.6390 respectively. The estimate model of tbe biomass isolated forest was Wo = 1. 210 9 （D^2H）^0. 7807, W s= 0. 360 5 （D^2H）^0.8897, Wb = 0. 411 8 （D^2H）^0.7269, Wl = 0. 930 1 （D^2H）^0.6315 respectively. All correlative coefficients of these functions were in excess of 0.90. The model of basal diameter fitted better than that of height, when basal diameter was in the range of 0.4-8.0 cm.

关 键 词：光皮桦 幼树 生物量 林分环境 喀斯特森林 

分 类 号：S718[农业科学—林学]