长江滩地I-72杨人工林生物量和生产力研究  

A Study on Biomass and Productivity of Populus×euramericana cv. 'San Martino' (I-72/58) Plantation on Beach Land of Yangtze River

作　　者：张群[1] 范少辉[2] 刘广路[2] 冯慧想[1] 宗亦尘[1] 费本华[3] 

机构地区：[1]中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京100091 [2]国际竹藤网络中心,竹藤科学与技术重点实验室,北京100102 [3]中国林业科学研究院木材工业研究所,北京100091

出　　处：《林业科学研究》2008年第4期542-547,共6页Forest Research

基　　金：国家自然科学基金重点项目(30230420)部分研究内容

摘　　要：应用典型样地调查法和相对生长法，测定了长江滩地4种密度14年生I-72杨人工林的生物量与生产力。发现在密度250～37 0株·hm^-2的范围内，I-72杨林分生物量从102．40t·hm^-2增加到147．20t·hm^-2，生产力从7．31t·hm^-2·a^-1增加到10．52t·hm^-2·a^-1。在所调查的林分中，地上部分生物量占总生物量的90％，其中干54％、枝28％、皮7％、叶1％；地下部分生物量仅占总生物量10％。在4种密度的林分中，I-72杨人工林生物量的径级分布表现为波浪形，随着林分密度的增大，生物量高峰出现时的径阶有减小的趋势。By the methods of sampling typical plots and allometric dimension analysis, the underground and aboveground biomass and net primary productivity （NPP） of Populus x euramericana cv. San Martino＇（ I -72/58） plantation with different densities were measured on the beach land of Yangtze River in Anqing City, Anhui Province. The results showed that the biomass of the stand increased from 102.40 t·hm^-2to 147.2 t · hm^-2 ,the productivity increased from 7.31 t·hm^-2· a^-1 to 10.52 t·hm^-2·a^-1with the trees number increased from 250 to 370 per hectare. Aboveground and underground biomass accounted for 90% and 10% of the total biomass. In aboveground biomass, the stem, branch, bark and leaf account for 54% ,28% ,7% and 1% , respectively. The diameter class distribution of biomass and tree＇ numbers both took on irregular undee curve in plantations with four different densities; at the same time, the more the portion of high diameter class, the more the biomass of the Populus × euramericana cv. ‘ San Martino （ I - 72/58 ） ＇ forest in a plantation with same density.

关 键 词：I-72杨人工林 生物量 生产力 长江滩地 

分 类 号：S792.11[农业科学—林木遗传育种]