中国西南地区森林生物量及生产力研究综述

在参考前人大量的研究结果基础上,按不同林分类型和林分起源对中国西南地区(云南省、贵州省、四川省、重庆市)的森林生物量和净生产力进行了总结概述.结果显示,西南地区的森林生物量为162.15 t/hm2;若按不同的林分类型来划分,则阔叶林的森林生物量(178.08 t/hm2)大于针叶阔叶混交林( 164.63 t/hm2)和针叶林(145.18 t/hm2)的；若按不同的林分起源进行划分,则天然林的森林生物量(210.58 t/hm2)大于人工林(110.65 t/hm2)的.西南地区的森林净生产力为11.98 t/(hm2·a),若按不同的林分类型来划分,则阔叶林的森林净生产力12.75 t/(hm2·a)大于针叶林的12.13 t/(hm2·a)和针叶阔叶混交林的9.61 t/(hm2·a)；若按不同的林分起源进行划分,则天然林的森林净生产力13.38t/(hm2·a)大于人工林的10.56 t/(hm2·a).同时对研究中发现的一些问题及以后的研究方向进行了讨论与展望.

Study on the Biomass and Productivity of Forest in Southwest China

The forest biomass and productivity in Southwest region of China(Yunnan province,Guizhou province,Sichuan province,Chongqing city) was summarized according to different forest types and forest origin on the basis of the previous studies.The results showed that the forest biomass in Southwestern region was 162.15 t/hm2;the biomass of the broad-leaved forest(178.08 t/hm2) was greater than that of the needle and broad-leaved mixed forest(164.63 t/hm2) and coniferous forest(145.18 t/hm2)according to the division of the forest types;the biomass of the natural forests(210.58 t/hm2) was greater than that of the planted forests(110.65 t/hm2) according to the origin division of forest stands.The net primary forest productivity in Southwest of China was 11.98 t/(hm2·a);the net primary forest productivity of the broad-leaved forests was 12.75 t/(hm2·a),greater than that of the coniferous forest which was 12.13 t/(hm2·a) and the needle and broad-leaved mixed forest(9.61 t/(hm2·a)) according to the division of the forest types.The net productivity of the natural forest was 13.38 t/(hm2·a),greater than that of the artificial forest(10.56 t/(hm2·a)) according to the origin division of the forest stands.Some problems and countermeasures were discussed.