第一节农业动物群落生态工程 一、放牧群落生态工程 科学家们从对野生动物群落的考察中发现,动物农业与植物农业一样存在多物种混合经营的可能性。在非洲的一些地方仍存在大量野生动物群落,这些野生物种在生境、身体的大小和寻食习性方面各不相同。对这种野生动物混合群落中持续获取动物产品产量的潜力作出的估计表明,随所研究地的湿度的升高,每平方公里的动物生物量由1吨增至30吨,不仅 Section I Ecological Animal Husbandry Communities I. Grazing Community Ecological Engineering Scientists have discovered from the investigation of wild animal communities that animal agriculture has the possibility of multi-species mixed management as well as plant agriculture. There are still large numbers of wildlife communities in some parts of Africa that differ in their habitat, size of their bodies and the habits of seeking food. Estimates of the potential for continued gains in animal products from this mixed community of wildlife indicate that as the humidity studied increased, animal biomass per square kilometer increased from 1 to 30 tons per square kilometer, not only