海岛陆地生态系统固碳估算方法  

Discussion of carbon sequestration estimates in the island terrestrial ecosystems

作　　者：王晓丽[1] 王嫒[1] 石洪华[2] 郑伟[2] 周然[3] 

机构地区：[1]天津理工大学环境科学与安全工程学院,天津300384 [2]国家海洋局第一海洋研究所,青岛266061 [3]交通运输部天津水运工程科学研究所,天津300456

出　　处：《生态学报》2014年第1期88-96,共9页Acta Ecologica Sinica

基　　金：国家科技基础性工作专项资助项目(2012FY112500);海洋公益性行业科研专项经费资助项目(201305009);国家海洋局第一海洋研究所中央级科研院所基本科研业务经费资助项目(GY0213G13;GY0213G30)

摘　　要：陆地生态系统在调节全球碳平衡和减缓全球气候变化中起着重要作用。海岛作为一种特殊的生态系统,生物群落和环境与大陆基本相似。虽然海岛生态结构相对简单,物种的丰富程度比大陆低,但对全球碳循环也有一定的影响。在海岛陆地生态系统中,森林和灌草的种属相对较少,且不同纬度的海岛森林植被种属差异明显,可采用典型样地清查和生物量模型估算相结合的方法估算乔木层和灌草层的碳储量。采用模型估算固碳潜力时,根据海岛生态环境的特殊性,综合考虑岛陆面积、季节、风向、坡度、坡向、海拔、平均温度、降雨量、土壤理化性质等参数对其碳储量估算的影响。海岛植被生物多样性影响其土壤碳储存的生态服务功能,利用多元统计分析方法,建立岛陆植物物种丰度与土壤碳储量的空间回归模型,明确植物多样性的改变对岛陆土壤固碳能力的影响。此外,从土壤固碳的角度而言,海岛土壤-植物-微生物间相互作用是其重要的研究方向。利用现代分子生物学技术,研究海岛陆地生态系统的土壤-植物-微生物相互作用关系,有利于海岛土壤固碳潜力估算精度的提高。Terrestrial ecosystems play an important role in regulating the carbon balance and mitigating global climate change. Island is a special terrestrial ecosystem, on which the communities and environmental conditions are similar to that of the mainland, but its ecological structure is relatively simple, and the species richness is lower than that of the mainland. Island ecosystems still has strong ability of carbon storage, carbon fixation and plays an important role in the global carbon cycle. This work discusses carbon sequestration estimates in the island terrestrial ecosystems Island regions are especially vulnerable to projected changes in eustatic sea level, storm impacts, suitability due to low-lying land and limited migration potential. The island area in the global is about 1/15 mainland, so the ecosystem of forest, shrub, and grass on islands has had an impact on the global carbon and habitat of the whole sequestration. Although the species of forest, shrub, and grass on islands is relative fewer, there is significant difference of biodiversity on the islands at different latitudes The combining methodology of the estimate selected to estimate the carbon storage of forests, model shrub, of biomass and the inventory of sampling investigation and grass on islands. The estimate model of biomass is a can be specifictype of modeling that seeks to mechanistically represent cycles of carbon at islands regional ecosystem through an integrated into account of biology and geochemistry. Using models to estimate carbon sequestration on the island, factors influencing the carbon storage assessment are considered to be identified. The factors covers the land area of the island, season, wind, slope, aspect, elevation, average temperature, rainfall, soil properties, and so on. Biodiversity also enhances the ability of ecosystems to maintain multiple functions, such as carbon storage, productivity, and the buildup of nutrient pools. If the maintenance of biodiversity is to be justified as a strategy for enhancing ecosyst

关 键 词：碳循环 碳汇估算 海岛 陆地生态 

分 类 号：X171[环境科学与工程—环境科学]