CRB: Stimulation of Woodland Restoration: Inital Patch Size Effects on Spread of Vegetation and on Soil Development

在大都市地区常见的废弃土地往往不能 支持林地植被的正常演替，原因是， 不知道。 恢复不同的原生木本植物群落 在这样的网站上的植物是重要的，因为需要增加 野生动物和植物生物多样性的栖息地，创造走廊， 减少自然栖息地之间的距离， 候鸟，并为环境提供机会， 在人口稠密的城市地区开展教育和娱乐活动。 我们 建议测试可能刺激木本植物定殖的方法 的封闭式堆填区，一个丰富的类型， 可以迅速在该地点定居的小块木本植物。 我们将通过实验确定补丁大小的网站，并将测试 一系列关于抑制的原因的假设 自然演替 该项研究将在新鲜的一个最近关闭的堆填区进行 Kills，NY. 7个物种的7个、21个和72个个体的斑块将 在随机区组设计中创建。 种子雨，招募 和幼苗的生存，草食动物将在监测 斑块和从每个斑块向外延伸的横断面上;这些 研究将检验传播和食草限制的假设， 天然木本植物建立。 土壤质量，包括 有机质，氮磷库，氮矿化度，根系生长 和菌根感染，也将在 ”““然后，然后。 随着时间的推移，地面的变化将允许测试假设 关于这些进程之间的联系。 通过评估 关于地上和地下过程的假设，我们 将能够比较它们的相对重要性 传承为 随后，该项目将导致设计 对在被破坏土地上使用的恢复方法的建议 在整个地区。

Derelict land commonly found in metropolitan areas often fails to support normal succession to woodland vegetation, for reasons that are not known. Restoration of diverse communities of native woody plants on such sites is important because of the need to increase habitat for wildlife and plant biodiversity, create corridors and decrease distance between areas of natural habitat, support migratory birds, and provide opportunities for environmental education and recreation in densely populated urban areas. We propose to test methods that may stimulate woody plant colonization of closed landfills, an abundant type of derelict land, by planting small patches of woody plants that can rapidly colonized the site. We will experimentally determine the patch size site, and will test a series of hypotheses concerning the causes for the inhibition of natural succession. The study will be conducted on a recently closed landfill at Fresh Kills, NY. Patches of 7, 21, and 72 individuals of 7 species will be created in a randomized block design. Seed rain, recruitment and survival of seedlings, and herbivory will be monitored in the patches and on transects extending outward from each patch; these studies will test hypotheses that dispersal and herbivory limit natural woody plant establishment. Soil qualities, including organic matter, pools of N and P, N mineralization rae, root growth and mycorrhizal infection, will also be monitored within the patches and transects, and will test hypotheses concerning below- ground changes over time will permit testing of hypotheses concerning linkages among these processes. By evaluating hypotheses regarding both above- and below-ground processes, we will be able to compare their relative importance during succession. Subsequently, this project will result in design recommendations for restoration methods used on derelict land throughout the region.