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首页> 外文会议>International Peat Congress >SOIL MICROBIAL COMMUNITIES AND ASSOCIATED GHG EMISSIONS AT DIFFERENT LAND USE TYPES IN MALAYSIAN PEATLANDS: AN IMPLICATION FOR CLIMATE CHANGE
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SOIL MICROBIAL COMMUNITIES AND ASSOCIATED GHG EMISSIONS AT DIFFERENT LAND USE TYPES IN MALAYSIAN PEATLANDS: AN IMPLICATION FOR CLIMATE CHANGE

机译：马来西亚泥炭地区不同土地利用类型的土壤微生物群落及相关的温室气体排放：气候变化的含义

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The tropical peatlands are complex and globally important ecosystems for its distinctive biodiversity and high carbon storage because of its unique acidic, nutrient poor and waterlogged conditions. About 68% of the carbon-rich tropical peatlands are present in South East Asia (SEA) with highest cover in Indonesia and Malaysia. The SEA peatlands store about 70 Gt of carbon, and absorb at least 2.6 tonnes of CO2 per hectare per year. The carbon has been gradually amassed in these peatlands since the last ice age for last 10,000 years, when the peatlands have played a major role in maintaining the carbon balance of the earth. This carbon accumulation is a result of delicate balance among different environmental and biological conditions. This delicate balance is disturbed by anthropogenic disturbances that are turning the peatlands from carbon sinks to sources of three major greenhouse gases. The microbes in peatlands play an important role not only in the formation of peat itself, but also directly influence ecosystem carbon turnover and nutrient mineralization for high primary production, effecting overall ecosystem function and maintaining the balance. Despite the importance of microbes in maintaining the peatland functions and their importance on climate change, there is minimal research done on the microbes in different land use types within the tropical peatlands. There is an increasing need to know the changes in microbial communities with land use change and understand the relationship between soil microbial communities and biogeochemical cycling in the peatlands. This research aims to quantify the carbon loss and the changes in microbial community structure along the different disturbance gradients in the tropical peatlands of North Selangor. The emissions of CO2 and CH4 are measured using Los Gatos greenhouse gas analyser. The microbial community structure is determined using PLFA (phospholipid Fatty Acids) and PLEL (Phospholipid Ether Lipids) analysis. The outcome is expected to help understand the relationship between soil communities and biogeochemical cycling, and observe the pattern of change along the disturbance gradient. The results would also help estimate the impact of land use change in tropical peatlands on global climate change.
机译：热带泥炭地是一种复杂的和全球重要的生态系统，其独特的生物多样性和高碳储存，因为其独特的酸性，营养素差和涝渍。大约68％的碳富碳热带泥炭块出现在东南亚（海运），印度尼西亚和马来西亚最高的封面。海泥泥储存约70克碳，每年吸收至少2.6吨二氧化碳。自过去10,000年以来，碳覆盖率以来，这些泥炭地在这些泥炭地中逐渐积累了这些泥炭地。这种碳积累是不同环境和生物条件之间的微妙平衡的结果。这种微妙的平衡受到人为干扰的干扰，这些障碍将泥炭池从碳汇到三个主要温室气体的来源。泥炭地的微生物不仅在泥炭本身的形成中发挥着重要作用，而且还可以直接影响生态系统碳周转和营养矿化，以获得高初级生产，实现整体生态系统功能并保持平衡。尽管微生物在维持泥炭地职能方面的重要性及其对气候变化的重要性时，但在热带泥炭地区的不同土地使用类型中的微生物就会进行最小的研究。越来越需要了解与土地利用变化的微生物社区的变化，了解泥炭地泥土中土壤微生物社区与生物地球化学之间的关系。该研究旨在量化北雪兰莪热带泥炭地区不同干扰梯度的碳损失和微生物群落结构的变化。使用Los Gatos温室气体分析仪测量CO2和CH4的排放。使用PLFA（磷脂脂肪酸）和棕榈（磷脂醚脂质）分析测定微生物群落结构。预计结果有助于了解土壤社区与生物地球化学循环之间的关系，并观察逆梯度的变化模式。结果还将有助于估计土地利用变化对全球气候变化的热带泥土的影响。

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