Spatial and Temporal Patterns of Tropical Forest Recovery in an Agricultural Landscape

农业景观中热带森林恢复的时空模式

• 批准号: 0515577
• 负责人: Karen Holl
• 金额: --
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0515577&HistoricalAwards=false
• 关键词: Spatial; Temporal; Patterns; Tropical; Forest

This research will answer theoretical and applied questions about ecosystem recovery across broad temporal and spatial scales, specifically focusing on the recovery of tropical montane rain forest in southern Costa Rica. The research is the first stage in a long-term study testing a novel restoration approach, planting islands of trees to serve as nuclei for recovery, and evaluating the importance of proximity to existing rain forest patches for recovery. To address these questions 12 replicate blocks of three 0.25-ha plots will be established in abandoned agricultural lands over a 100 km2 area in southern Costa Rica. Plots will receive one of three treatments: (1) control - no planting, (2) planting the plot with native tree "nuclei" of three sizes, and (3) planting the entire plot with native tree species. These blocks will be split between areas surrounded by "low" and "high" forest cover. We will monitor tree seedling establishment of forest species in these plots, as well as in six remnant forest plots. In the third year, seed rain, microclimatic conditions, soil water potential, soil phosphorus, and seed/seedling herbivory will be measured in selected plots to evaluate alternative mechanisms underlying patterns of seedling establishment. This research constitutes an innovative collaborative research effort between scientists and farmers interested in integrating agricultural production and biological conservation, and consequently will yield ecological, social, and educational benefits. The results of this work will help improve tropical forest restoration efforts both locally and regionally, which has important consequences for conservation of biodiversity and ecosystem services.

这项研究将回答理论和应用问题的生态系统恢复跨越广泛的时间和空间尺度，特别是侧重于恢复南部哥斯达黎加的热带山地雨林。 这项研究是一项长期研究的第一阶段，该研究测试了一种新的恢复方法，种植树木岛屿作为恢复的核心，并评估了接近现有雨林斑块的重要性。 为了解决这些问题，将在哥斯达黎加南部100平方公里的废弃农田中建立12个重复区块，每区块3块0.25公顷。地块将接受三种处理之一：（1）对照-不种植，（2）用三种大小的原生树“核”种植地块，以及（3）用原生树种种植整个地块。这些区块将分为“低”和“高”森林覆盖率所包围的地区。我们将监测这些地块以及六个残留森林地块中森林物种的树苗建立。在第三年，种子雨，小气候条件，土壤水势，土壤磷，种子/幼苗草食动物将在选定的地块进行测量，以评估替代机制的幼苗建立模式的基础。这项研究是科学家和农民之间的一项创新合作研究，他们对农业生产和生物保护相结合感兴趣，因此将产生生态，社会和教育效益。这项工作的成果将有助于改善地方和区域的热带森林恢复工作，这对保护生物多样性和生态系统服务具有重要影响。