Allan J David, Alexander Harvey J, Greenberg Ronald
Department of Zoology, University of Maryland, 20742, College Park, Maryland.
Oecologia. 1975 Mar;22(1):49-56. doi: 10.1007/BF00345257.
Two crop fields (alfalfa and orchard grass) and two fallow fields (bluegrass and old field) were compared on the basis of plant and foliage arthropod complexity. Plant species richness and foliage height diversity increased substantially from crop to fallow: bluegrass to fallow: old field. The trend in arthropod complexity paralleled this trend in plant complexity but dit not appear to be as striking. Fallow fields typically possessed more species, fever individuals, higher evenness in relative abundance patterns and proportionally more predators. However, crop fields had quite diverse foliage arthropod faunas, and we suggest that high primary productivity of crop fields may somewhat offset lowered plant habitat complexity.
基于植物和叶部节肢动物的复杂性，对两块农田（紫花苜蓿田和果园草田）和两块休耕田（早熟禾田和抛荒地）进行了比较。从农田到休耕田，植物物种丰富度和叶层高度多样性显著增加：从早熟禾田到休耕田，再到抛荒地。节肢动物复杂性的趋势与植物复杂性的趋势相似，但似乎不那么明显。休耕田通常拥有更多的物种、更少的个体、相对丰度模式中更高的均匀度以及比例上更多的捕食者。然而，农田也有相当多样的叶部节肢动物群落，我们认为农田较高的初级生产力可能在一定程度上抵消了植物栖息地复杂性的降低。
