The sandy provenance district of Hulunbeir ( No. ⅱ);
采用野外定点取样与室内培养相结合的方法，研究了呼伦贝尔4种退化沙地土壤种子库密度多样性。
Based on the field sampling and the bourgeoning experiment in laboratory , the diversity of the soil seed banks in4 types of sandy grasslands were studied .
呼伦贝尔沙地