海南清澜港杯萼海桑生态系统碳密度及分配特征

采用Komiyama红树林异速生长模型，对海南清澜港杯萼海桑生态系统的植被生物量、碳密度及其空间分布特征进行研究。结果表明:杯萼海桑植被层总生物量为(177.89±14.36)t·hm^-2，碳密度为(80.35±6.92)t·hm^-2，其中，乔木层生物量为(176.52±14.23)t·hm^-2，碳密度为(79.69±6.86)t·hm^-2，占林分植被层总碳密度的99.2%。杯萼海桑生态系统总有机碳库密度为(536.91±54.99)t·hm^-2，其中0~105 cm土壤碳密度为(456.56±48.07)t·hm^-2，占总碳贮量的85.0%，植被有机碳密度占总碳贮量的14.85%，林下植被层和现存凋落物层仅占0.15%。

Carbon Density and Allocation of Sonneratia alba Mangrove Ecosystem in Qinglan Harbor of Hainan

Based on Komiyama mangrove allometric growth model, vegetation layer biomass, carbon density and its spatial distribution characteristics of Sonneratia alba mangrove ecosystem in Qinglan Harbor of Hainan were investigated. The results showed that the total vegetation layer biomass was (177.89±14.36)t·hm^-2 in the Sonneratia alba mangrove ecosystem, and the tree layer biomass was (176.52±14.23)t·hm^-2. The carbon density was (79.69±6.86)t·hm^-2, accounting for 99.2% of the total forest vegetation layer. Total organic carbon density of Sonneratia alba mangrove ecosystem was (536.91±54.99)t·hm^-2, vegetation layer carbon capacity per unit area was (80.35±6.92)t·hm^-2, accounting for 14.85% of the total carbon reserves. Soil organic carbon of per unit area was (456.56±48.07)t·hm^-2 in the soil layer of 0-105 cm, accounting for 85.0% of the total ecosystem carbon reserve. Only 0.15% belonged to undergrowth and litter layer.