Wind damage risk estimation for strip cutting under current and future wind conditions based on moment observations in a coastal forest in Japan.
Wind damage risk estimation for strip cutting under current and future wind conditions based on moment observations in a coastal forest in Japan.
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基于日本沿海森林的时刻观测，评估当前和未来风力条件下条带切割的风害风险。
DOI：
10.1007/s10310-016-0539-0
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发表时间：
2016
影响因子：
1.5
通讯作者：
Hironori Noguchi
中科院分区：
文献类型：
--
作者：
Satoru Suzuki;Tomoki Sakamoto;Hironori Noguchi
在日本，沿着海岸建造了沿海森林，以防止房屋和田地受到强风造成的灾害。需要建立一种管理方法来调节林分密度。由于气候变化导致的热带气旋强度增加，未来风速也有可能增加。基于对样本树的矩工作，我们评估了与日本黑松林带状砍伐相关的当前和未来风害风险。我们建立了一个由三组树木组成的研究站点：a组面对1.2 m的采伐带，B组面对5 m的采伐带，C组为对照。B组易受强风影响，标准化临界风速（CWSnml）明显小于其他组。通过比较cwsnl与风速50年重现期标准进行了灾害风险评估。在当前条件下，5m切割具有一定的风险，1.2 m切割具有较低的风险。在未来的风条件下，5米的砍伐被认为是高风险的，因此大多数树木不符合标准。即使在未来的条件下，1.2米的切割也显示出低风险。我们的研究结果清楚地揭示了条带砍伐后剩余树木对强风稳定性的显着变化。本研究提出了一种量化森林管理风险的方法。
In Japan, coastal forests have been constructed along the seashore to prevent houses and fields from disasters caused by strong winds. A management method needs to be established to regulate the stand density. There is also the possibility that wind speed will increase in the future because of the increasing strength of tropical cyclones caused by climate change. We evaluated the current and future risk of wind damage associated with strip cutting of Japanese black pine forest based on moment work on sample trees. We established a research site consisting of three groups of trees: group A faced a 1.2-m cutting strip, group B faced a 5-m cutting strip, and group C was the control. Group B was vulnerable to strong winds because the normalized critical wind speed (CWSnml) was significantly smaller than that in the other groups. The damage risk was evaluated by comparing CWSnmlwith the criterion, a 50-year return period of wind speed. In the current conditions, 5-m cutting had a certain degree of risk, and 1.2-m cutting showed a low risk. Under the future wind conditions, 5-m cutting was found to show high risk so that most of the trees did not meet the criterion. The 1.2-m cutting showed a low risk even in the future conditions. Our results clearly reveal the significant changes in the stability of remaining trees against strong winds after strip cutting. This study suggests a method to quantify the risk involved in forest management.