不同营林和采伐方式对野生动物栖息地会产生什么效应?美国一些大学和政府部门的研究人员在亚利桑那州的6块美国黄松林地对此进行了各种对比研究。上层木主要为美国黄松(Pinus ponderosa)、桧(Juniperus deppeana)、甘氏栎(Quercus gambelii),下层植物有多年生草本、阔叶草本和灌木。6块林地分别作如下处理:1)皆伐后将废材堆成一行行;2)砍 What effects do different silos and harvesting methods have on wildlife habitat? Some researchers from universities and government departments in the United States have conducted various comparative studies in six American pine forests in Arizona. The upper wood is dominated by Pinus ponderosa, Juniperus deppeana, Quercus gambelii and perennial, broadleaf herbs and shrubs. 6 pieces of woodland were treated as follows: 1) after clearing the waste pile into a line; 2) cut