Oak Processionary Moth Survey GB 10K Grid 2013

Sites selected for inspection were formerly used for the Forestry Commission Forest Condition Survey. Each site contains 24 numbered trees and each of these trees is inspected for signs and symptoms of OPM. Surveys started in 2010. Count - Number of sites surveyed in grid square Year - Year in which sites were surveyed Attribution statement: Contains OS data © Crown copyright [and database right] [year].本次遴选的检查样地此前均用于林业委员会（Forestry Commission）森林状况调查项目。每个样地均包含24棵带编号的林木，并针对栎列队蛾（OPM）的危害体征与症状开展检查。调查工作于2010年正式启动。 Count —— 方格网格内已完成调查的样地总数。 Year —— 样地的调查年份。 署名声明：本数据集包含英国地形测量局（Ordnance Survey，OS）数据，© 英国皇家版权及数据库权利 [年份]。