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本文以伯里湿度系数为主要依据,对黄土高原的植被建设作了宏观区划,并进行了验证。一、黄土高原概况黄土高原西起日月山,东至太行山,北至长城,南抵秦岭(东经103～113°,北纬34～41°),总面积53万km~2,其中水土流失面积43万km~2。该区属于中温带～暖温带大陆性气候。大部分地区黄土覆盖深厚,一般均在50～100m以上。整个高原的土壤空隙度、降雨、气温、生长期由东南向西北呈现明显的递减变化(表一)。
In this paper, the humidity coefficient of Buri as the main basis for the construction of the Loess Plateau of the macroscopic zoning and verified. I. Overview of the Loess Plateau The Loess Plateau west of the Riyosphere, east Taihang Mountains, north of the Great Wall, south Qinling (103 ~ 113 longitude, 34 ~ 41 ° latitude), with a total area of 530,000 km ~ 2, of which soil erosion area 430000 km ~ 2. The area belongs to the temperate ~ warm temperate continental climate. Loess in most parts of the deep, generally more than 50 ~ 100m. The soil porosity, rainfall, temperature and growth period of the whole plateau show a significant decreasing change from southeast to northwest (Table 1).