Key Laboratory of Soil and Water Conservation & Desertification Combating of the Ministry of Education;
School of Soil and Wa- ter Conservation;
Beijing Forestry University;
Beijing 100083;
P. R. China;
College of Forestry;
Inner Mongolia Agricultural University;
Hohhot 010019;
P. R. China;
Prevention and Control Sand Office;
Beijing Municipal Bureau of Landscape and Forestry;
Beijing 100029;
R R. China;
土壤有机碳库; 北京山区; 阔叶林; 针叶林; 颗粒有机碳; 土层深度; SOC; 氧化性;