Influence of Canopy Plants on Variation Characteristics of Forest Color Landscape in Pearl River Delta
Focusing on 10 typical forests occurring in the Pearl River Delta(PRD),our study aimed to reveal the effects of canopy plants on the forest color landscape's characteristics.Through fixed-point observations over one year,we collected a total of 195 sample images.These images were analyzed for color composition and patch spatial patterns using a custom-developed program.Plant species and patch patterns were identi-fied through visual interpretation.Additionally,the association between canopy species and forest color was elucidated using the Apriori algorithm,and the impact of canopy plant patch distribution on the forest color landscape pattern was explored using a linear mixed model.The results showed that 1)the forest landscape in the PRD was dominated by green(66.14%),with light green(13.15%)as a secondary color,and em-bellished with yellow-green(8.94%),orange(6.31%),and yellow(5.45%).2)The contributing species to different forest colors varied in species composition,contribution timing,and contribution rate.Aporosa dioica and Eucalyptus exserta significantly contributed to orange and yellow,Khaya senegalensis,Termi-nalia neotaliala,Ceiba speciosa and Vernicia montana significantly contributed to yellow-green and light-green,Michelia chapensis,Litsea cubeba and Chukrasia tabularis significantly contributed to green.3)The canopy plant patch indicators had higher explanations for the average fractal dimension,diversity,and den-sity of the forest color patches(Marginal R2=0.399,0.287,0.250).These findings provide a theoretical basis and technical support for optimizing the forest color landscape in the South Subtropical region through strategic tree species selection and plant spatial distribution.
canopy plantforest color contribution rateduration of contributionforest color landscape pattern
万方数据
维普
