摘要
根据植被调查和土壤水分调查资料 ,讨论了黄土丘陵典型地区的造林的水分条件和植被地带的划分。水分不足是造林的限制因子 ,在现有天然林及人工林中普遍存在土壤干层 ,所以 ,延安研究区南部应属干旱森林区 ,北部属森林草原区。并根据土壤水分现状和植被现状 ,进行了植被建设区划 。
The vegetation reconstruction and the regionalization of the vegetation district in the Yan'an experimental region,according to the investigating data of vegetation and soil moisture.The moisture insufficient is limiting factors of growing forests.The soil arid layer is existing commonly in natural and artificial forests.Consequently,the southern part in Yan'an experimental region belong to arid forest prairie and the northern part belong to forest steppe prairie.The regionalization of vegetation reconstruction is carrying on.The Yan'an experimental region is divided into two districts and two subdistricts.
出处
《水土保持研究》
CSCD
2000年第2期102-110,共9页
Research of Soil and Water Conservation
基金
国家"九五"科技攻关专题! ( 96-0 0 4-0 5 -13 )
关键词
黄土丘陵区
土壤水分
植被建设区划
loess gully and valley
soil moisture
soil drying layer
arid forest
division of vegetation reconstruction