作　　者： ; ; ; ;

机构地区： 中国林业科学研究院热带林业研究所

出　　处： 《生态环境学报》 2017年第6期985-990,共6页

摘　　要： 红树林生态系统具有碳储量高、碳汇潜力强的特点,选择碳密度高的红树林树种和最佳的碳汇环境有利于实现碳储量的最大化。以广东省雷州半岛附城沿海红树林为研究对象,通过比较不同林龄、不同潮位、不同树种栽种模式红树林群落碳储量,深入研究不同生物因素和环境因素对红树林碳储量的影响。该研究中,红树林碳储量包括植物碳储量和土壤碳储量两部分,植物碳储量通过地上植物、地下植物和凋落物的生物量的测定进行计算,通过测定土壤有机碳来计算土壤碳储量。结果表明,红树林群落碳储量一般具有随树龄增加而持续增大的趋势,主要原因为土壤碳储量不断增加。高潮位红树林碳储量高于低潮位的,潮位因素与树种因素对碳储量的影响具有交互作用,潮位因素对不同树种的影响程度不同。在研究区域内,20年生各群落碳储量排序为:无瓣海桑(S.apetala)-桐花树(A.corniculatum)>桐花树(A.corniculatum)+秋茄(K.obovata)>无瓣海桑(S.apetala)>桐花树(A.corniculatum)>无瓣海桑(S.apetala)-白骨壤(A.marina)>秋茄(K.obovata)>白骨壤(A.marina),碳储量分别为305.52、236.26、178.15、172.96、145.99、136.98、97.42 t·hm^(-2)。本研究可为合理制定红树林碳汇造林方案提供科学依据。 Mangrove ecosystem occupies high carbon storage and strong carbon sequestration potential.It could maximize the carbon storage if suitable mangrove species and the best environment were chosen to improve the forest stand and afforest.Selecting mangrove which was in Fucheng town of Leizhou peninsula,Guangdong,as the research object,influence of biotic and environmental factors on carbon storage was studied by comparing with carbon storage of different age,sea level,tree species and plant model.In this study,carbon stocks include two parts,the vegetation and soil carbon stocks.Vegetation carbon stocks were quantified by measuring the biomass of trees,roots and downed woody debris.Soil organic carbon was measured to quantify soil carbon stocks.The results showed that carbon storage of mangrove communities was abidingly raised by the increase of age of which major reason was the increase of soil carbon storage.Carbon stocks of mangrove which were at high tide level was higher than those which were at low tide level.Influence of tidal and tree factors on carbon storage had interaction effect.Tidal factors had different influence on different tree.In the study region,carbon storage of20-year-old communities was ranked that S.apetala-A.corniculatum>A.corniculatum+K.obovata>S.apetala>A.corniculatum>S.apetala-A.marina>K.obovata>A.marin,which value was separately305.52,236.26,178.15,172.96,145.99,136.98,97.42t·hm-1.The study provided scientific basis to construct carbon sequestration forest.

关 键 词： 雷州半岛 红树林 碳储量 影响因子 碳汇造林

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