基于城市森林生态保健功能的游憩适宜性评价OA

It explored the eco-environmental benefits and health functions of urban forests with different communities to provide a scientific guidance as urban residents undertake ecological health care activities in suitable areas across seasons.Based on the dynamic changes of nine eco-environmental factors among different communities,this study constructed the Urban Forest Health Care Index(UFHCI)for Chenzhou Nanling Botanical Garden.Using GIS spatial analysis to overlay assessed UFHCI with geographic factors,we evaluated seasonal suitability of health care recreational area for urban residents.Considering the five forest communities of evergreen broad-leaved forest(SM),deciduous broad-leaved forest(SN),evergreen coniferous forest(SK),deciduous coniferous forest(ST)and mixed forest(SA),and the annual average UFHCI ranked in ascending order as SN ≈ SM ≈ ST<SK<SA,with values of 0.87±0.08,0.87±0.10,0.87±0.10,0.88±0.11 and 0.89±0.11,respectively.The UFHCI of five forest communities was significantly higher than that of CK(P<0.01),but no significant differences among different communities.The UFHCI of the same forest community exhibited obvious seasonal variations,with significantly higher values in spring and summer than in autumn and winter.In autumn,the UFHCI of evergreen forests SM and SK was significantly higher than that of deciduous forests SN and ST(P<0.05),whereas no significant differences among different communities in the other three seasons.Nanling Botanical Garden in which the area was highly suitable and suitable for the forest health care and recreation accounted for 41.79%of the total area.The area proportion of the forest health care and recreation had obvious seasonal variation.The highly suitable area was the largest in summer(24.19%)and the smallest in autumn,while the suitable area reached its maximum in spring(45.48%).The distinct spatiotemporal UFHCI patterns provide theoretical support for improving the health care function of urban forests,optimizing recreational forest construction,and refining vegetation structure.