华北山区草地资源及其生产力的研究

华北山区位于温带——暖温带，东经１０７°～１２３°，北纬３５°～４３°。包括山东丘陵区，太行山区，冀北辽西山地区，阴山山地区四部分。该区属于农牧业交错区，农业、牧业（农区牧业和草地牧业）、林业十分发达，并且在迅速发展。华北山区是我国小麦、玉米和杂粮的主要产区。草地类型多样，饲草料丰富，又是养牛业、养羊业、养猪业相当发达的地区。经统计，华北山区总人口为５６２９万，总土地面积３５４５万ｈａ，天然草地总面积为１５８８．９１万ｈａ，占土地总面积的４４．８２％，人均草地０．２８２３ｈａ。各个区的草地类型不同，生产力差异显著（ｐ＜０．０１）。

The Study on Grassland Resources and Their Productive Forces in North China Mountainous Districts

The North China mountainous regions are situated at the Temperate-Warm Temperate Zone,including Shandong Hilly Area,Taihang Mountainous Area,Northern Hebei and Western Liaoning Mountainous Area and Yinshan Mountainous Area,these 4 areas in total,are situated from 107-123° E longitude to 35-43° N latitude.And these districts are crisscross through rural,pastoral and forest areas all around,where these 3 industries are showing all prosperously towards rapid development up to the present.The North China Mountainous Districts are an important industrial region of wheat,corn and other food grains production.The rangeland (inclusive of grassland) types are much and varied,where the raw feeds are also abundant,and furthermore,these areas are stated as analogous to prosperous districts of cattle,sheep and goat as well as to swine raising industries. According to our statistical survey,the total population figure was estimated to 56.29 million,total areas to 35.45 million hectares,and area of rangeland to 15889100 hectares,occupying 44.82% of these Districts. The rangeland types are quite varied and variant level was indicated to be highly significant(P>001).