Vulnerability of the carbon and water cycles in primary rainforest and agroforestry ecosystems in Indonesia to Climate Change

印度尼西亚原始雨林和农林生态系统碳和水循环对气候变化的脆弱性

• 批准号: 175292638
• 负责人: Professor Dr. Alexander Knohl
• 金额: --
• 依托单位: Abteilung Bioklimatologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/175292638?language=en
• 关键词: Vulnerability; carbon; water; cycles; primary

Current and future climatic changes are affecting the functioning of natural and managed ecosystems in Indonesia by altering the energy balance and fluxes of water and greenhouse gases and consequently the productivity of the ecosystems. Land use changes e.g. from natural to managed ecosystems may results in important climatic feedbacks at all spatial scales in terms of surface properties and particularly in the water cycle. The main objectives of the proposal are (a) to quantify the ecosystem – atmosphere exchange of energy, water and CO2 fluxes over a primary rainforest and a cacao plantation in relation to environmental drivers, (b) to determine the origin and recycling of atmospheric water using stable water isotopes (18O and 2H), and (c) to assess the feedbacks of changing land use on regional climate forcing and the water cycle. Methodologically, we will combine eddy covariance measurements of energy, water, and CO2 fluxes at two sites on the Sulawesi Island with novel online measurements of 18O and 2H in water vapor using laser spectroscopy, and regional scale climate modeling. Combining new data measured at the two tower sites and a meteo-station network with regional climate modeling will provide an assessment of the vulnerability of the carbon and water cycle to global change and thus help to identify high risk areas for land use during the 21st century.

当前和未来的气候变化正在影响印度尼西亚自然生态系统和管理生态系统的功能，改变了能量平衡和水和温室气体的通量，从而影响了生态系统的生产力。土地利用的变化，例如从自然生态系统到管理生态系统的变化，可能在所有空间尺度上导致重要的气候反馈，就地表性质而言，特别是在水循环方面。该提案的主要目标是(a)量化原始雨林和可可种植园与环境驱动因素相关的生态系统与大气之间的能量、水和二氧化碳通量交换，(b)利用稳定的水同位素（18O和2H）确定大气水的来源和再循环，以及(c)评估土地利用变化对区域气候强迫和水循环的反馈。在方法上，我们将结合苏拉威西岛两个地点的能量、水和二氧化碳通量的涡旋相关方差测量，以及利用激光光谱和区域尺度气候模型对水蒸气中18O和2H的新型在线测量。将两个塔台站点和气象站网络测量的新数据与区域气候模拟相结合，将提供碳和水循环对全球变化脆弱性的评估，从而有助于确定21世纪土地利用的高风险地区。