在河北省最北部内蒙古高原南缘的塞罕坝机械林场,分布有17目48科117属227种鸟类,由于本区冬季漫长、年均气温低,其中大部分为夏候鸟,春夏季节到此繁殖,深秋陆续迁往南方越冬。一、基本情况(一)植被状况塞罕坝机械林场总经营面积140万亩,有林地 In the northernmost part of Inner Mongolia Plateau in Hebei Province, the southern edge of the Saihanba mechanical forest, there are 17 orders and 48 families, 117 genera and 227 species of birds. Due to the long winter, the annual average temperature is low, most of them are summer migratory birds, To this breeding, autumn and winter will be relocated to the south. First, the basic situation (a) vegetation status Saihanba mechanical forest total management area of ​​140 mu, with woodland