内蒙古托克托县森林生长量调查分析  

Investigation and analysis of forest growth in Togtoh county

作　　者：冯倩男 段雷 张婷 韩静 蔡丽艳 FENG Qiannan;DUAN Lei;ZHANG Ting;HAN Jing;CAI Liyan(Institute of Forestry Monitoring and Planning of Inner Mongolia,Hohhot 010020,China)

机构地区：[1]内蒙古自治区林业监测规划院,内蒙古呼和浩特010020

出　　处：《林业建设》2020年第5期24-30,共7页Forestry Construction

基　　金：内蒙古自治区林地适宜性评价技术研究与应用项目资助。

摘　　要：以2016年托克托县森林资源规划设计调查和林业专业调查成果数据为基础,对其森林生长量状况进行分析,为掌握该县森林资源动态变化,预测发展趋势,制定林业发展规划和经营决策提供合理的依据。托克托县森林活立木年生长量27962.16 m^3,其中杨树年生长量最大(25791.52 m^3),占有林地年生长量的92.24%。有林地中,国槐单位面积生长量最高(4.26 m^3/hm^2),其次为圆柏(3.61m^3/hm^2)、榆树(2.97 m^3/hm^2)和杨树(2.14 m^3/hm^2),樟子松(0.21 m^3/hm^2)和油松(0.15 m^3/hm^2)最低;各龄组的单位面积生长量大小依次为中龄林(5.05 m^3/hm^2)、近熟林(3.69 m^3/hm^2)、成熟林(2.39 m^3/hm^2)、过熟林(1.77 m^3/hm^2)、幼龄林(1.25 m^3/hm^2);各林种的单位面积生长量大小依次为特种用途林(3.22 m^3/hm^2)、用材林(2.15 m^3/hm^2)、防护林(2.01 m^3/hm^2)和经济林(0.44 m^3/hm^2)。Based on the data of design and survey for forest resource and forestry specialty survey for Togtoh county in 2016,we analyzed the situation of forest growth and provided a reasonable basis for grasping the dynamic changes,predicting the developing trend of forest resources,formulating forestry development plan and management decision.The annual growth of living trees had 27962.16 m^3 in this county.Among them,Populus simonii had the highest growth(25791.52 m^3),accounting for 92.24%of the total growth of forest land.Sophora japonica had the highest growth per hectare(4.26 m^3/hm^2),followed by Sabina chinensis(3.61m^3/hm^2),Ulmus pumila(2.97 m^3/hm^2),Populus simonii(2.14 m^3/hm^2),Pinus sylvestris var.mongolica(0.21 m^3/hm^2)and Pinus tabuliformis(0.15 m^3/hm^2)in forest land;The order of growth per hectare of all age groups was mid-mature forest(5.05 m^3/hm^2),near-mature forest(3.69 m^3/hm^2),mature forest(2.39 m^3/hm^2),overmature forest(1.77 m^3/hm^2)and young forest(1.25 m^3/hm)in turn;The order of growth per hectare of all forest categories was special purpose forest(3.22 m^3/hm^2),timber forest(2.15 m^3/hm^2),protection forest(2.01 m^3/hm^2)and economic forest(0.44 m^3/hm^2)in turn.

关 键 词：托克托县 森林 生长量 

分 类 号：S757.2[农业科学—森林经理学]