This article presents a carbon stock assessment to illustrate the organic carbon distribution and storage within mangrove ecosystems in Sri Lanka. The living tree biomass and soil carbon pools were investigated in three sites with varying degree of human disturbance in Batticaloa Lagoon. Soil carbon content was derived by the Walkley Black method from soil samples and mangrove trees were measured for calculations in general allometric equations. The mangroves that were extremely converted into a shrimp farm in Kokkaddicholai recorded a carbon (C) stock of 100.9 kg m‐2. Dominated by the poisonous Excoecaria agallocha stands, the regenerating mangroves in Manmunai Bridge Island hosted the largest C stock measuring 786.4 kg C m‐2. The Kannankudah site—dominated by Avicennia marina, Lumnitzera racemosa and Excoecaria agallocha stands, recorded a C stock of 593.1 kg C m‐2. Cuts and stumps indicated wood harvesting for local livelihoods. The soil C content pool contributed most significantly to the total C stock, with the top 30 cm containing the largest C concentration in all soil profiles. The soil carbon content was highest (5.1 per cent) in Kannankudah, second highest (3.6 per cent) in the disturbed but regenerating forest at Manmunai Bridge Island, and the lowest (0.3 per cent) at the converted site of Kokkaddicholai.

中文翻译：

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斯里兰卡巴蒂卡洛泻湖红树林生态系统碳储量评估，不同程度的人为干扰

本文介绍了碳储量评估，以说明斯里兰卡红树林生态系统中有机碳的分布和存储。在拜蒂克洛泻湖的三个地点，研究了不同程度的人为干扰的活树生物量和土壤碳库。通过沃克利·布莱克（Walley Black）方法从土壤样品中提取土壤碳含量，并测量红树林中的树木，以用于一般的异速方程。在Kokkaddicholai被极度转变为虾场的红树林记录了100.9 kg m-2的碳（C）存量。以有毒的Excoecaria agallocha林分为主，Manmunai桥岛的红树林中碳蓄积量最大，为786.4 kg C m-2。坎南库达（Kannankudah）网站-以Avicennia码头为主，Lumnitzera racemosa和Excoecaria agallocha林分记录的碳储量为593.1 kg C m-2。砍伐和树桩表明砍伐木材是当地的生计。土壤碳含量池对总碳储量的贡献最大，最高的30 cm处所有土壤剖面中的碳浓度最高。在坎南库达州，土壤碳含量最高（5.1％），在曼穆奈桥岛（Manmunai Bridge Island）受干扰但正在再生的森林中土壤碳含量最高（3.6％），而在经改造的科卡德迪霍莱伊地区最低（0.3％）。