Effects of Spring Burning on Grasshopper Nymphs

Sweep samples were taken for grasshoppers (Arcididae) at two upland sites on 5 watersheds at approximately two week intervals, June-Sept 1982. At each site on each occasion, 20 sets of 20 sweeps (400 sweeps total) were taken. Stored data include for each site on each occasion: total number of each species (all instars combined) collected and total number for each instar for each species (400 sweeps combined).1982年6月至9月，以约两周为采样间隔，在隶属于5个流域的2处高地样地中采集蝗虫（Arcididae）扫网样本。每次采样时，在每个样地中开展20组扫网操作，每组包含20次扫网，单样地单次采样总计完成400次扫网。所存储的数据集包含每次采样时各对应样地的两类统计信息：一是合并所有龄期后的各物种种群个体总数，二是各物种各龄期的个体数量，两类统计均基于全部400次扫网样本完成。