布氏田鼠数量调查方法的比较

Comparison with the methods for Brandt's vole population

本文探讨了常用的四种调查方法，即标记流放法、定面积捕尽法、洞口计数法和铗日法对布氏田鼠数量测报的效果。结果标记法相关最高的是捕尽法（r＝0，7599，P＜0．05），其次为洞口法（r=0．5146，P＜0．05），铗日法最低（r=0．2682，P＜0．05）。建议有条件时可应用捕尽法。如对数量精度和种群信息要求较低者，可使用洞口法。铁日法对于种群变动的灵敏性较差，其资料可供地理范围之间的比较。

The methods of investigation are been discussed for forecasting Brandt's vole populations.There are four methods usually are used. They are (1) captured - recapured method, (2) all captured inplot, (3) numbers of burrow method and (4) trap day method. The maximum coefficient of relation in themare between (1) and (2) [r = 0.7599, P < 0.05], the second is between (1) and (3) [r = 0.5146, P <0.05 ], the smallest is (1) and (4). It is a suggest that all captured in plot can be applied for forest wherehaving better condition. The method of count number burrows can be used if it does no require more pre-cision of information of the population. Trap day method is not sensitive for the dynamic of the population,but the data can be used compare populations in geo - range.