摘要
人工林是庙岛群岛典型的陆地生态系统的组成部分,对维护海岛地区生态环境具有重要作用。采用现有生物量相对生长方程和样地调查数据相结合的方法,以庙岛群岛中北长山岛为研究区,对海岛黑松纯林与黑松×刺槐混交林两种林型的碳储量进行了估算,并分析了土壤质地及其理化性质对海岛乔木层碳储量的影响。结果表明:黑松乔木层平均碳储量为84.00 t/hm2,接近于世界平均水平(86.00 t/hm2);黑松×刺槐混交林乔木层平均碳储量为29.60 t/hm2,高于山东省乔木层的平均碳储量(27.62 t/hm2)。应用因子分析法研究影响乔木层碳储量的主要因子,结果表明:土壤质地、pH值、含水量及含盐量是影响海岛乔木碳储量重要的影响因子。北长山岛土壤全氮、总磷、土壤有机质、碳氮比等其他理化性质对乔木层碳储量影响不是非常明显。
The artificial plantations is a typical terrestrial ecosystem on the island of Miaodao Archipelago, which plays a key role in regional ecological environment. The Pinus thunbergii and Pinus thunbergiiRobinia pseudoacacia are the typical trees on the Beichangshan island of Miaodao Archipelago in Shandong Province. But they are often disregarded due to their ecosystem services, particularly the carbon sequestion, which are not well understood or quantified. This paper is to estimate the trees carbon storage on the island with the biomass allometric equation and the data investigation in stand sample plot, and discuss the impact of different parameters in the island on trees carbon storage. The results showed that the average carbon storage was 84.00 t/hm2 for the Pinus thunbergii, which was close to the average level in the world （86.00 t/hm2）, and the average carbon storage was 29.60 t/hm2 for the Pinus thunbergiiRobinia pseudoacacia, which was higher than that of the average carbon stock in Shandong Province （27.62 t/hm2）. The average carbon storage of the Pinus thunbergii was higher than that of the Pinus thunbergiiRobinia pseudoacacia, which the difference was significant （P 〈 0.05）. The allocation of carbon storage in their different organs for the Pinus thunbergii and mixed forest in tree layer was trunk〉 root〉 branch〉 leaf. The Pinus thunbergii forests is more suitalbe for carbon storage than that of Pinus thunbergiiRobinia pseudoacacia forests on the Beichangshan island. In order to investigate the impact of different parameters in the island on trees carbon storage, a correlation matrix including environmental factors and soil texture was calculated. The carbon storage in the island forests showed significant （P 〈 0.05） correlations with soil class, slope, aspect, elevation. However, all these parameters were interrrelated, and cannot be regarded as independent determining factors. Therefore, the principal component analysis （PCA） was carried out in order to extract the main f
出处
《生态学报》
CAS
CSCD
北大核心
2013年第19期6363-6372,共10页
Acta Ecologica Sinica
基金
国家科技基础性工作专项项目(2012FY112500)
海洋行业性科研工作专项经费项目(201305009
201050008
201005009)
国家自然科学基金项目(41206111
41206112)
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项目(2011T06
2013G30
2013G27)
关键词
碳储量
黑松
刺槐
土壤理化性质
carbon storage
Pinus thunbergii
Robinia pseudoacacia
soil physical-chemical properties
