Land suitability assessment for forest landscape restoration
In this study,we sought to examine county forest landscape restoration mechanisms,determine priority restoration areas and appropriate restoration measures,and provide a theoretical basis for county ecological restoration.Taking Zigui County as a typical case,we conducted an assessment of land suitability for forest landscape restoration at the landscape and stand scales.For landscape-scale assessments,we used a matter element model to determine the priority plots for forest landscape restoration and carried out targeted restoration.For stand-scale assessments,we used a gray situation decision-making mathematical model for multi-targets to construct a restoration strategy focused on improving the conservation function of regional water sources,biomass,and productivity,with the aim of achieving the optimal allocation of ecosystem services within certain spatial and temporal ranges.The results revealed that the area suitable of forest landscape restoration in Zigui County is 18 674.06 hm2.Of this total,3 643.74 hm2 land was found to be suitable for afforestation,of which,41.74％,29.93％,24.53％,and 3.80％was suitable for coniferous forest,coniferous and broad-leaved mixed forest,broad-leaved forest,and shrubbery,respectively.The remaining 15 030.32 hm2 was assessed to be suitable for forest quality improvement in Zigui County.According to the type of forest,different specific interventions and combinations of replanting,reforestation,promotion of understory vegetation growth,passive restoration,forest management,single-species transformation,planting mixed forest,mountain closure,and afforestation were determined.Our findings in this study reveal that a quantitative matter element analysis method and the gray situation decision-making mathematical model for multi-targets,combined with the data of regional land use status,forest resource and other basic data,can be applied to effectively determine restoration strategies,and provide an effective quantitative method for assessing forest landscape restoration at the county scale.
forest landscape restorationmatter element modelgray situation decision-making mathematical model for multi-tar-getsZigui Countyforest quality improvement
万方数据
维普
