陷阱法的改进及其在稻田蜘蛛取样中的应用

An improved pitfall trap for better sampling of spiders in paddy fields

在稻田保水的情况下,使用传统的取样方法调查地面活动的节肢动物存在很大的困难。为了准确监测稻田地面活动节肢动物的物种及其个体数量和时间动态,对陷阱法在水稻田的应用进行了改进。以稻田地面活动的优势种狼蛛(Lycosidae)为监测对象,采用改进的陷阱法——"土堆陷阱法"取样,并以常用的吸虫器法作对比,验证土堆陷阱法的应用效果。建议以土堆陷阱法作为稻田地面节肢动物的调查采样方法。

Ecologists are often faced with the difficulty of sampling arthropods moving around on land using sampling tools like suction traps.To overcome sampling difficulties associated with such methods,an improved pitfall trap,the cubic-soil pitfall trap,was developed to sample Lycosid spiders in rice fields.This technique proved more accurate and efficient than suction traps.Although we do not dismiss other approaches to sampling arthropods,we suggest that the cubic-soil pitfall trap be accepted as an alternative approach that can potentially achieve a better assessment of species diversity in crop fields.