珠三角地区冠层植物对森林色彩景观时空特征的影响  

Influence of Canopy Plants on Variation Characteristics of Forest Color Landscape in Pearl River Delta

作　　者：韩文静 张昶[1,3] 王成 沈德才[3,4] 周海琪 刘婷 殷鲁秦 HAN Wenjing;ZHANG Chang;WANG Cheng;SHEN Decai;ZHOU Haiqi;LIU Ting;YIN Luqin(Research Institute of Forestry,Chinese Academy of Forestry/Urban Forest Research Centre of National Forestry and Grassland Administration,Beijing 100091,China;CCCC Highway Consultants.Co.,Ltd.,Beijing 100010,China;Guangdong Pearl River Estuary City Cluster Ecosystem National Observation and Research Station,Dongguan 523106,Guangdong,China;Dongguan Institute of Forestry Science,Dongguan 523106,Guangdong,China)

机构地区：[1]中国林业科学研究院林业研究所/国家林业和草原局城市森林研究中心,北京100091 [2]中交公路规划设计院有限公司,北京100010 [3]广东珠江口城市群森林生态系统国家定位观测研究站,广东东莞523106 [4]东莞市林业科学研究所,广东东莞523106

出　　处：《西北林学院学报》2025年第1期232-243,共12页Journal of Northwest Forestry University

基　　金：中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2020ZB008);东莞市社会发展科技项目(20231800936142)。

摘　　要：以珠三角地区10种典型森林为研究对象,揭示冠层植物对森林色彩景观的时空贡献机制。通过全年定点观测,共获取195张样本图像,利用自拟程序量化分析图像色彩构成和斑块空间格局特征。通过目视解译辨识分析植物种类和斑块格局,采用Apriori算法揭示冠层树种与森林色彩的关联机制,使用线性混合模型探讨冠层植物斑块分布对森林色彩景观格局的影响。结果表明:1)珠三角地区森林色彩景观以绿色(66.14%)为主色,以浅绿色(13.15%)为辅助色,以黄绿色(8.94%)、橙色(6.31%)和黄色(5.45%)为点缀色;2)不同森林色彩的主要贡献植物,其种类构成、贡献时间和贡献率均存在差异,银柴、窿缘桉对橙色和黄色贡献突出,非洲楝、小叶榄仁、美丽异木棉、木油桐对黄绿色和浅绿色贡献较大,而乐昌含笑、山鸡椒、麻楝则对绿色贡献较大;3)冠层植物斑块指标对森林色彩斑块平均分维度指数、多样性指数和密度的解释程度较高(Marginal R^(2)=0.399、0.287、0.250)。以上结果为南亚热带地区森林色彩景观优化提供了树种选择和植物空间方面的理论基础和技术支撑。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 identified 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 embellished 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,Terminalia neotaliala,Ceiba speciosa and Vernicia montana significantly contributed to yellow-green and lightgreen,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 density of the forest color patches(Marginal R^(2)=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.

关 键 词：冠层植物 森林色彩贡献率 贡献持续时间 森林色彩景观格局 

分 类 号：S731.3[农业科学—林学]