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前言兴隆山青杆(Picea wilsonii Mast.)林是甘肃中部黄土干旱石质山地的垂直地带性植被和顶极群落。在一望无垠的黄土高原上,茂密的森林植被,对当地环境保护,水源涵
Foreword Picea wilsonii Mast. Forest is a vertical zonal vegetation and climax community of loess arid stony mountainous area in central Gansu Province. In the vast Loess Plateau, dense forest vegetation, the local environmental protection, water source culvert