甘肃省森林资源现状及动态变化分析  

Analysis on Status and Dynamic Change of Forest Resources in Gansu Province

作　　者：张龙生[1] 程小云 李萍[1] 张旭华[1] 曹容 车启龙 赵方圆 ZHANG Longsheng;CHENG Xiaoyun;LI Ping;ZHANG Xuhua;CAO Rong;CHE Qilong;ZHAO Fangyuan(Gansu Provincial Ecological Environment Monitoring and Supervision Administration/Gansu Provincial Forestry Investigation and Planning Institute,Lanzhou,Gansu 730020,China)

机构地区：[1]甘肃省生态环境监测监督管理局/甘肃省林业调查规划院,甘肃兰州730020

出　　处：《林业与环境科学》2020年第3期73-79,共7页Forestry and Environmental Science

基　　金：2017年甘肃省林业厅科研项目(2017kj030)。

摘　　要：文章以甘肃省森林资源连续清查和统计数据为数据基础,采用统计分析的方法,对40年来甘肃省森林资源动态变化进行了分析研究,结果表明:从1975年到2016年,全省林地面积由630.87万hm2增加到1046.35万hm2,增长65.9%;有林地面积由186.83万hm2增加到263.89万hm2,增长41.2%;森林面积(含国家特别规定灌木林)由2006年的470.67万hm2增加到2016年的509.73万hm2,增长8.3%;森林活立木蓄积量由1.96亿m3增长到2.84亿m3,增长45.1%。森林面积蓄积“双增”幅度较大。全省乔木林每公顷蓄积量由1975年的99.31m3/hm2微降到2016年的95.45 m3/hm2,下降4.1%,森林质量较低。同时乔木林树种、林龄结构不够合理。采用回归分析预估,到2035年和2050年,森林面积分别达到639.15万hm2和742.68万hm2,森林覆盖率达到14.21%和16.52%,乔木林蓄积量达到3.2亿m3和4.1亿m3,活立木蓄积量达到3.6亿m3和4.5亿m3。The research based on the continuous inventory and statistical data of forest resources in Gansu Province,analyzed the dynamic changes of forest resources of the past 40 years with the statistical analysis method.The result showed that:from 1975 to 2016,the forestry area of Cansu province increased from 6.31 million hm2 to 10.46 million hm2,an increase of 65.9%.Arboreal lands increased from 1.87 million hm2 to 2.64 million hm2,an increase of 41.2%.Forest standing volume increased from 196 million m3to 284 million m3,an increase of 45.1%.Forests area(including shrubs specified by the state)increased from 4.71 million hm2 in 2006 to 5.10 million hm2 in 2016,an increase of 8.3%.Both forest area and volume increased greatly.The volume of arbor forest per hectare showed a slight downward trend,which decreased from 99.31 m3/hm2 in the 1970s to 95.45 m3/hm2 in 2016,a decrease of 4.1%.The forest quality is lower.Both of the arbor species and age structure are unreasonable.Using regression analysis,it is predicted that by 2035 and 2050,the forest area will reach 6.39 million hm2 and 7.43 million hm2 respectively,the forest coverage will reach 14.21%and 16.52%,the stock of arbor forest will reach 320 million m3 and 410 million m3,and the standing forest stock will reached 360 million m3 and 450 million m3.

关 键 词：甘肃省 森林资源 动态变化 预估分析 

分 类 号：S757.2[农业科学—森林经理学]