Dissertation Research: The Effect of Cultivation on Biogeochemical Cycles and the Community Following Shifting Cultivation in West Kalimantan, Indonesia

施莱辛格DEB-9623837，这项研究的目标是确定种植历史如何影响林地中的植物定居和竞争。我们假设，在当地规模上，重复的刀耕火种农业将减少植物生长所需的土壤养分，如磷的可获得性。在景观尺度上，在许多砍伐和焚烧循环过程中，种子来源的时空分布的变化将影响哪些物种到达给定的斑块。将通过观察性研究和实验室和现场实验来验证这些假说。将原始森林转化为农用土地对热带地区数百万农村贫困人口的福祉至关重要。它也是生物多样性丧失和碳储存潜力丧失的来源。这些景观的可持续管理和发展取决于了解多样性和养分循环之间的关系，以及它如何受到反复干扰的影响。

SCHLESINGER DEB-9623837 The goal of this research is to determine how cultivation history affects plant colonization and competition in forest patches . We hypothesize that at the local scale repeated slash-and-burn agriculture will reduce the availability of limiting soil nutrients, such as phosphorous, for plant growth. At the landscape scale, changes in the spatial and temporal distribution of seed sources over the course of many slash-and-burn cycles will affect which species arrive at a given patch. Both observational studies and experimentation in lab and field will be used to test these hypotheses. The conversion of primary forest to agricultural land is vital to the well-being of millions of rural poor in the tropics. It is also the sources of biodiversity loss and loss of carbon storage potential. Sustainable management and development of these landscapes depends on understanding the relationship between diversity and nutrient cycling and how it is affected by repeated disturbance.