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拜读刘晓龙等先生的《啄木鸟益害新评》(下简称《新评》)一文(见《大自然》1993.3)后,亦想发表一点己见,目的是能对啄木鸟的益害有一个全面的评价。对啄木鸟的益害,用“一分为二”的方法评价,是我们的共识。但是《新评》中列举的一些事例,则值得商榷。我国的啄木鸟均属食虫鸟类研究啄木鸟的食性,是确定其益害的主要依据,但又是一个较复杂的问题,除《新评》所提“因种而异、因时而变”外,再加上“因地而
After reading Liu Xiaolong et al’s “New Comment on Woodpecker Benefit” (also referred to as “New Comment”) (see Nature 1993.3), I would also like to make my own opinion so as to give an overall assessment of the benefits of Woodpecker . The benefits of woodpeckers, with “one divided into two” approach to evaluation, is our consensus. However, some of the examples listed in the “New Comment” are debatable. The woodpeckers in our country belong to the feeding habits of the woodpecker, which is the main basis for determining their beneficial effects. However, it is a more complicated issue. In addition to the “new comment” that “varies from species to species and from time to time” , Plus "because of the ground