摘要:
2011 年6—9 月和2012 年4—5 月,采用“围栏陷阱法冶对福建省将乐县国有林场典型人工林内泽陆蛙种群进 行调查,共捕获泽陆蛙222 只。采用聚类分析方法,按照体长、体重将泽陆蛙划分为成体和亚成体,分析不同月份、 不同类型人工林、不同林龄人工林内泽陆蛙的日均捕获量、肥满度和重长比的变化规律。结果显示:1)人工林泽陆 蛙日均捕获量随月份变化先减小后增大,肥满度无显著变化,重长比先增大后减小。2)人工林泽陆蛙肥满度、重长 比,混交林高于纯林;日均捕获量纯林高于混交林。3)随人工林林龄的增加泽陆蛙肥满度、重长比增大,中龄林泽 陆蛙日均捕获量最高。研究结果可为人工林物种多样性保护提供新思路,并为人工林经营模式的转变提供参考。
关键词:
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人工林
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泽陆蛙
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日均捕获量
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肥满度
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重长比
Abstract:
From June to September 2011 and April to May 2012, we had made a preliminary investigation on the rice frog communities in different typical plantations using the “Fence with pitfall trap冶in Jiangle County of Fujian Province, eastern China and 222 rice frogs were captured. Based on snout-vent length and body weight, rice frogs were divided into adult and subadult by using cluster analysis. The variation of daily-catches, relative-fatness and weight/ length index were analysed in different months, different types of plantations and varied age of plantations. The result showed that: 1) the daily-catches and weight/ length index of rice frog in plantations decreased first and then increased from April to September, and the relative-atness had no significant changes; 2) The relative-fatness and weight/ length index of rice frog in pure plantations were higher than mixed plantations, and the daily-catches was contrary;3) The relative-fatness and weight/ length index of rice frog were growing with the age of plantations, and the daily-catches reached the highest in middle age plantations. The results can provide new ideas for protecting the species diversity in plantations and guide for changing the management mode of plantations
百度学术
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