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马志婷, 周璋, 李意德, 陈德祥, 赵厚本, 骆土寿, 许涵, 陈洁, 吴建辉, 张霞. 广州典型风水林碳密度特征[J]. 植物科学学报, 2020, 38(4): 506-516. DOI: 10.11913/PSJ.2095-0837.2020.40506
引用本文: 马志婷, 周璋, 李意德, 陈德祥, 赵厚本, 骆土寿, 许涵, 陈洁, 吴建辉, 张霞. 广州典型风水林碳密度特征[J]. 植物科学学报, 2020, 38(4): 506-516. DOI: 10.11913/PSJ.2095-0837.2020.40506
Ma Zhi-Ting, Zhou Zhang, Li Yi-De, Chen De-Xiang, Zhao Hou-Ben, Luo Tu-Shou, Xu Han, Chen Jie, Wu Jian-Hui, Zhang Xia. Carbon density in geomantic forests in Guangzhou, China[J]. Plant Science Journal, 2020, 38(4): 506-516. DOI: 10.11913/PSJ.2095-0837.2020.40506
Citation: Ma Zhi-Ting, Zhou Zhang, Li Yi-De, Chen De-Xiang, Zhao Hou-Ben, Luo Tu-Shou, Xu Han, Chen Jie, Wu Jian-Hui, Zhang Xia. Carbon density in geomantic forests in Guangzhou, China[J]. Plant Science Journal, 2020, 38(4): 506-516. DOI: 10.11913/PSJ.2095-0837.2020.40506

广州典型风水林碳密度特征

Carbon density in geomantic forests in Guangzhou, China

  • 摘要: 以广州市典型风水林为对象,对其生态系统全组分碳储量及其分配格局进行调查和估算,研究碳密度特征及其影响因素。结果显示:风水林生态系统平均碳密度为(259.17±69.67)t/hm2,其中,植被碳密度为(194.04±54.07)t/hm2(占74.9%)(其中以乔木层占绝对优势,达90%以上),土壤碳密度为(65.13±19.30)t/hm2(占25.1%);植被和土壤碳密度之间呈显著正相关(P<0.05);不同优势种类的风水林碳密度差异较大,以米槠(Castanopsis carlesii(Hemsl.)Hayata.)为优势的林分碳密度最大(310.57±62.65 t/hm2)。结果表明影响风水林碳密度的主要因子是林分胸高断面积、林分密度、土壤容重和土壤碳含量,其中,风水林碳密度与胸高断面积、土壤容重和土壤碳含量呈显著正相关,与林分密度呈显著负相关,与植物多样性无显著相关。研究结果对南亚热带林分改造和碳汇林营造具有重要科学意义。

     

    Abstract: Typical geomantic forests were studied in Guangzhou, and their carbon (C) density composition and distribution patterns were investigated. Ecosystem, vegetation, and soil C density were (259.17±69.67) t/hm2, (194.04±54.07) t/hm2, and (65.13±19.30) t/hm2, respectively. The C densities of different dominant species in the geomantic forests differed significantly, with the highest C density for Castanopsis carlesii (Hemsl.) Hayata. (310.57±62.65 t/hm2). The ecosystem C storage was dominated by the tree layer (more than 90% of the vegetation). The main factors that affected forest vegetation C density in the geomantic forest were mean tree diameter at breast height (DBH), stand basal area (BA), stand density, soil bulk density, and soil C content, but not the species diversity indices. These results confirmed the importance of stand structure on C storage and dynamic reallocation in geomantic forests. Therefore, improving the complexity of community structure in geomantic forests during forest management might enhance forest C storage.

     

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