Sample plots的用法和样例：
例句
- In tropical areas, larger plots have proved more useful due to greater heterogeneity of the forest.
在热带地区，由于森林的异质性较大，已证实大一些的样地更有效。 - At the level of species categories, the means mercury contents of macrobenthos at each sample point were higher in the creek than that under forest.
在动物类别水平上，各滩的潮沟样地动物中的汞含量均值均大于相应林内样地动物。
