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Aerial surveillance to detect kauri dieback in New Zealand

机译：在新西兰检测Kauri Dieback的空中监测

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The causal agent of kauri dieback, Phytophthora 'taxon Agathis' (PTA), poses a significant threat to kauri (Agathis australis) in northern New Zealand. Ground-based field surveys have previously confirmed PTA presence at several locations across Auckland and Northland. However, ground surveys are limited to areas adjacent to tracks because of difficulty and cost associated with off-track access in steep terrain, along with concern about furthering spread of PTA. A methodology for aerial photographicsurveillance of kauri dieback was developed and implemented in Waitakere Ranges, Hunua Ranges and adjacent forest areas. Using recently developed GPS technology, photographs were embedded with position data so unhealthy trees were easily located later for ground-truthing. Aerial survey was found to be a time- and cost-effective method for surveying large, inaccessible areas of forest for kauri dieback. The methodology would also be applicable for detection of visible disease or damage symptoms in othercanopy tree species.
机译：Kauri DieBack的因果转移，植物北仑的植物agathis'（PTA）对新西兰北部的Kauri（Agathis Australis）构成了重大威胁。基于地面的田间调查先前已经确认了奥克兰和北方的几个地点的PTA存在。然而，由于与陡峭地形中的离轨道接入相关的难度和成本，地面调查限于与轨道相邻的区域，同时涉及PTA的进一步扩散。在Waitakere Ranges，Hupua范围和邻近的森林地区开发并实施了Kauri Dieback的空中影像侦察方法。使用最近开发的GPS技术，照片嵌入了位置数据，因此不健康的树木稍后容易位于地面串联。发现空中调查是调查kauri死回的大型，无法接近的森林区域的时间和经济高效的方法。该方法还适用于检测以检测其他综合树种中的可见疾病或损害症状。

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