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台风对橡胶林的影响是一个复杂的过程。选择1973年以来登陆华南的最强台风“威马逊”(201409)作为研究案件。通过台风登陆前后的Landsat 8遥感数据,利用橡胶林NDVI值的变化表示橡胶受损的程度,分析了它与台风破坏潜能、地形指数的相关性,并建立了台风对橡胶林植被的影响力指数,借此可以开展台风对橡胶林植被的影响预测。结果表明:(1)橡胶NDVI值的变化能从一定程度上反映橡胶受台风影响的程度,说明Landsat 8遥感数据能用于监测台风对橡胶的影响。(2)风速是决定橡胶林破坏严重程度的主要因子,台风破坏潜能指数能客观反映台风对橡胶林的影响程度。(3)定义的台风对橡胶林植被影响力指数,能从一定程度上预测台风对橡胶林的可能影响程度,但仍需要大量个例对其进行验证。
The impact of typhoon on the rubber plantation is a complex process. Select the strongest typhoon “Weimazun” (201409) that landed in southern China since 1973 as a research case. Based on the Landsat 8 remote sensing data before and after the typhoon landed, the relationship between the NDVI value of the rubber plantation and the damage potential of the typhoon and the topographic index was analyzed. The influence index of the typhoon on the rubber plantation , So as to forecast the impact of typhoon on rubber plantation. The results show that: (1) The change of rubber NDVI value can reflect the degree of rubber affected by typhoon to some extent, indicating that Landsat 8 remote sensing data can be used to monitor the impact of typhoon on rubber. (2) The wind speed is the main factor that determines the severity of rubber plantation damage. The typhoon damage potential index can objectively reflect the impact of typhoon on the rubber plantation. (3) The definition of typhoon’s influence index on rubber plantation can predict the possible impact of typhoon to rubber plant to a certain extent, but a large number of cases still need to be verified.