云南永德大雪山国家级自然保护区森林资源现状及评价

Status and Evaluation of Forest Resources in Daxueshan National Nature of Reserve of Yongde County in Yunnan Province

基于永德县2019年森林资源管理“一张图”和云南永德大雪山国家级自然保护区界线,利用GIS软件,对该保护区的森林资源现状进行分析和评价。结果表明:(1)该保护区林地占保护区面积比例约为100%,森林覆盖率为99.33%;(2)森林以天然林为主,乔木林以栎类林为主,优势树种以栎类、铁杉、桤木为主;(3)林地活立木公顷蓄积相对较高,乔木林中幼龄林、中熟林、近熟林占比较大,过熟林所占比相对较小,林木正处于较快生长阶段,森林生态系统生态价值正在提升;(4)保护区以阔叶林为主,针叶林为辅,生物多样性丰富,生态系统服务价值较高;(5)保护区海拔相差较大,植被从季雨林到亚高山灌丛草甸均有分布,便于科学考察研究和探险等生态旅游活动;(6)保护区以国有林为主,集体林为辅。

Based on the“One Picture”of Forest Resource Management in Yongde County in 2019 and the boundaries of the Daxueshan National Nature Reserve of Yongde County in Yunnan Province,using GiS software to analyze and evaluate the status of forest resources in the protected area.Result shows that:(1)The proportion of forest land in this Nature Reserve in the protected area is about 100%,and the forest coverage rate is 99.33%;(2)The forest was mainly natural forest,the arbor forest is mainly oak forest,and the dominant tree species was oak and iron Cunninghamia lanceolata and alder are mainly;(3)The accumulation of standing trees per hectare of forest land is relatively high.The proportion of young forest,middle-mature forest and near-mature forest in arbor forest is relatively large,and the proportion of over-mature forest is relatively small,indicating Forest trees are in a relatively rapid growth stage,and the ecological value of forest ecosystems is increasing;(4)The protected area is dominated by broad-leaved forests,supplemented by coniferous forests,with rich biodiversity and high ecosystem service value;(5)Conservation There is a big difference in altitude in the area.The vegetation ranges from monsoon forests to subalpine shrub meadows,which is convenient for scientific investigation and exploration and other eco-tourism activities;(6)The protected areas are mainly state-owned forests,supplemented by collective forests.Collective forests are mainly distributed in experimental areas,which are relatively loosely controlled and easy to manage.