Optimizing Aggregation of Small Forest Stands for Thinning Operations: A Case Study in Nasushiobara, Tochigi Prefecture, Japanns: A Case Study in Nasushiobara, Tochigi Prefecture, Japan.
Optimizing Aggregation of Small Forest Stands for Thinning Operations: A Case Study in Nasushiobara, Tochigi Prefecture, Japanns: A Case Study in Nasushiobara, Tochigi Prefecture, Japan.
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优化小型林分聚集以进行间伐作业：日本栃木县那须盐原市的案例研究：日本栃木县那须盐原市的案例研究。
DOI：
10.1007/s11842-022-09502-2
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发表时间：
2022
影响因子：
1.5
通讯作者：
K.
中科院分区：
文献类型：
--
作者：
Hosaka;K.;Konoshima;M.;Uemura;R.;Aruga;K.
在日本，将小型林场集中为较大的管理单位是改进管理计划的主要挑战之一，因为日本的大多数森林所有者都是小规模所有者。这样做可以提高疏林作业的效率，办法是扩大森林作业地点，并通过协调和巩固小规模森林所有者的管理做法，在综合管理单位之上建立更有效的道路网，从而降低经营费用。我们开发了一个空间显式的0 - 1优化模型，该模型考虑附近森林道路的空间位置，搜索最优聚合模式。为了考虑到森林道路在伐木和运输的聚集管理单元之间的连通性，我们假设远离附近道路的聚集单元必须在作为通往道路的聚集单元被收获之后才进行处理。我们在每个时间段内依次求解0-1整数规划问题。我们在日本枥木县那士原的一片森林中展示了我们的方法。我们研究的森林由1346个森林经营单位组成，面积为876公顷。我们考虑各种管理场景，并为每种场景寻找最优解决方案。每个管理场景都有一组需要满足的不同约束（例如，容量流约束、每个周期的最大允许聚合区域等）。我们的模拟结果表明，我们提出的方法能够提供有用的信息，帮助森林管理者制定基于分析框架的总体规划，使我们能够考虑总体单元内部和之间的森林生长以及整个景观的潜在道路网络连通性。
Aggregation of small forest stands into larger management units has been one of the main challenges to improve the management scheme in Japan where the majority of forest owners are small-scale owners. Doing so can improve the efficiency of thinning operations by expanding forest operation sites and by building more efficient road networks over the aggregated management units through the coordination and consolidation of the management practices of small-scale forest owners and resulting in reduced operating costs. We develop a spatially explicit 0–1optimization model that searches for optimal aggregation patterns considering spatial locations of nearby forest roads. In order to take into account the connectivity of forest roads among aggregated management units for logging and hauling, we assume aggregated units located away from a nearby road must be treated only after the aggregated units that act as the pathway to the road are harvested. We solve the 0–1 integer programming problem sequentially in each period of time. We demonstrate our approach using a part of a forest in Nasushiobara, Tochigi prefecture, Japan. Our study forest consists of 1346 forest management units covering an area of 876 ha. We consider various management scenarios and search for the optimal solution to each scenario. Each management scenario has a different set of constraints (e.g., volume flow constraint, the maximum allowable area for aggregation per period, etc.) to be satisfied. Our simulation results show that our proposed approach is able to provide useful information to help forest managers to develop an aggregation plan based on analytical framework that allows us to consider forest growth within and among aggregated units as well as the potential road network connectivity for the entire landscape.