云南省造林绿化空间适宜性调查评估研究--以大理州为例

Investigation and Evaluation on Spatial Suitability of Afforestation and Greening in Yunnan Province--Take Dali Prefecture as anExample

结合GIS对下发的国家级、省级及县(市、区)自提补充图斑根据用地评估范围指标和调查评估指标进行调查评估分析是否适宜纳入造林绿化空间并提出大理州森林覆盖率和林地保有量目标,结果表明:(1)纳入造林绿化空间图斑有49887个,面积105485.29 hm^(2);(2)在2020年大理州林地面积1874676.52 hm^(2),森林覆盖率58.07%的基础上,大理州自然资源和规划局和大理州林业和草原草局共同研究提出大理州森林覆盖率和林地保有量目标是:2020-2025年底林地保有量124428.06 hm^(2),森林覆盖率58.75%,2025-2030年底林地保有量123935.7 hm^(2),森林覆盖率59.39%;2030-2035林地保有量123478.55 hm^(2),森林覆盖率60.02%。针对森林资源管理“一张图”与“国土三调”成果地类现状存在不一致、林草部门的退化林修复、自然灾害和人为破坏等需进行人工造林修复、地块细碎等问题,籍此,提出相应的建议,以期为造林绿化空间调查评估提供参考。

Combining GIS,the national,provincial,and county(city,district)self extracted supplementary patches issued were investigated,evaluated,and analyzed based on the land use evaluation scope indicators and survey evaluation indicators to determine whether they are suitable for inclusion in afforestation and greening spaces.The forest coverage rate and forest land retention targets in Dali Prefecture were proposed.The results showed that:(1)49887 patches were included in afforestation and greening spaces,with an area of 105485.29 hm^(2);(2)On the basis of the forest area of 1874676.52 hm^(2) and forest coverage rate of 58.07%in Dali Prefecture in 2020,the Natural Resources and Planning Bureau of Dali Prefecture and the Forestry and Grassland Bureau of Dali Prefecture jointly studied and proposed the goals for forest coverage and forest retention in Dali Prefecture:by the end of 2020 to 2025,the forest land conservation amount is 124428.06 hm^(2),the forest coverage rate is 58.75%,and by the end of 2025 to 2030,the forest land conservation amount is 123935.7 hm^(2),and the forest coverage rate is 59.39%;The forest land ownership from 2030 to 2035 is 123478.55 hectares,with a forest coverage rate of 60.02%.In response to the inconsistency between the"one map"of forest resource management and the current situation of land types in the"three national land adjustments",the need for artificial afforestation and restoration in the forest and grass sectors,natural disasters and human destruction,and the fragmentation of land plots,corresponding suggestions are proposed to provide reference for the investigation and evaluation of afforestation and greening spaces.