Carbon and non-carbon climate regulation effects of land transformation systems at landscape level

景观层面土地改造系统的碳和非碳气候调节效应

• 批准号: 532868192
• 负责人: Professor Dr. Dirk Hölscher
• 金额: --
• 依托单位: Abteilung Bioklimatologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/532868192?language=en
• 关键词: Carbon; non; carbon; climate; regulation

Tropical rainforests play a highly important role in climate regulation. In addition to widely acknowledged carbon-based regulation relatively recently also non-carbon biophysical mechanisms, in particular evapotranspiration, have been highlighted. However, land transformation in tropical rainforest regions is proceeding fast and its climate regulation effects have thus far not been evaluated comprehensively. We propose to assess temporal and spatial variability of carbon and non-carbon climate regulation effects in a tropical mosaic landscape. The study area is located in lowland Sumatra, where rainforest in the past decades has to a large extent been converted into monoculture oil palm and rubber plantations. We assess the long-term variation of climate regulation effects with the eddy covariance method in a mature oil palm plantation, where a predicted El Nino Southern Oscillation event and future management interventions may create ‘hot moments’. The spatial variation (‘hot spots’) of vegetation indices, albedo and evapotranspiration as indicator of climate regulation effects will be assessed by ground-referenced drone-based measurements of rainforest, oil palm and rubber plantations, and in a biodiversity enrichment experiment (EFForTS-BEE). Landscape-wide available airborne LiDAR and spectral data will be used for up-scaling. Our project will provide essential climatic and LiDAR information to integrative analyses in partner projects, and lead a study on carbon and non-carbon climate regulation effects of land transformation systems at landscape level.

热带雨林在气候调节中发挥着非常重要的作用。除了最近得到广泛承认的基于碳的监管之外，非碳生物物理机制，特别是蒸散，也得到了强调。然而，热带雨林地区的土地改造正在迅速进行，其气候调节效应迄今尚未得到全面评价。我们建议在热带镶嵌景观中评估碳和非碳气候调节效应的时空变异。研究区域位于苏门答腊岛的低地，过去几十年来，那里的雨林在很大程度上已经转变为单一种植的油棕和橡胶种植园。我们评估的长期变化的气候调节效应与涡度协方差方法在一个成熟的油棕种植园，预测厄尔尼诺南方涛动事件和未来的管理干预可能会创造“热时刻”。将通过地面参考无人机对雨林、油棕榈和橡胶种植园的测量，并在生物多样性富集实验（EFForTS-BEE）中，评估作为气候调节效应指标的植被指数、蒸腾量和蒸散量的空间变化（“热点”）。将使用整个地貌范围内现有的机载激光雷达和光谱数据进行放大。我们的项目将为合作伙伴项目的综合分析提供必要的气候和激光雷达信息，并在景观水平上研究土地改造系统的碳和非碳气候调节效应。