Spatial simulation of forest succession and timber harvesting using LANDIS
Spatial simulation of forest succession and timber harvesting using LANDIS
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DOI：
10.1139/cjfr-30-1-32
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发表时间：
2000-01-01
影响因子：
2.2
通讯作者：
He, HS
中科院分区：
文献类型：
--
作者：
Gustafson, EJ;Shifley, SR;He, HS
Landis模型模拟了包括森林演替、干扰、种子传播和建立、火和风干扰在内的生态动态及其相互作用。我们描述了LADIS增加的模拟森林植被管理的能力，包括收获。使用与森林管理目标相关的标准的四种排名算法之一对林分(单元组)的收获进行优先排序。根据处方中规定的物种和年龄队列移除规则，采集选定林内的细胞。这些灵活的移除规则允许模拟各种处方，如规定的焚烧、间伐、单木选择和采伐。我们提出了一个案例研究应用LADIS在密苏里州(美国)的一个受管理的分水岭。以说明这种方法在模拟演替作为对森林管理和其他干扰的反应时的效用。不同的采伐措施在物种和大小类组成、平均斑块大小(由森林类型或大小类定义的斑块)和整个景观的森林边缘数量上产生了差异。LADIS的能力提供了一个建模工具，用于研究木材管理如何改变森林组成和空间格局的问题，为森林管理的生态响应提供了洞察。
The LANDIS model simulates ecological dynamics, including forest succession, disturbance, seed dispersal and establishment, fire and wind disturbance, and their interactions. We describe the addition to LANDIS of capabilities to simulate forest vegetation management, including harvest. Stands (groups of cells) are prioritized for harvest using one of four ranking algorithms that use criteria related to forest management objectives. Cells within a selected stand are harvested according to the species and age cohort removal rules specified in a prescription. These flexible removal rules allow simulation of a wide range of prescriptions such as prescribed burning, thinning, single-tree selection, and clear-cutting. We present a case study of the application of LANDIS to a managed watershed in the Missouri (U.S.A.) Ozark Mountains to illustrate the utility of this approach to simulate succession as a response to forest management and other disturbance. The different cutting practices produced differences in species and size-class composition, average patch sizes (for patches defined by forest type or by size class), and amount of forest edge across the landscape. The capabilities of LANDIS provide a modeling tool to investigate questions of how timber management changes forest composition and spatial pattern, providing insight into ecological response to forest management.