【摘 要】
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In Inner Mongolia,steppe grasslands face desertification or degradation because of human overuse and abandonment after inappropriate agricultural management.The soils in these croplands exist in heter
【机 构】
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Institute of Soil and Fertilizer and Save Water Agricultural,Gansu Academy of Agricultural Sciences,
【出 处】
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教育部学位管理与研究生教育司,国务院学位委员会办公室
论文部分内容阅读
In Inner Mongolia,steppe grasslands face desertification or degradation because of human overuse and abandonment after inappropriate agricultural management.The soils in these croplands exist in heterogeneous environments characterized by widely fluctuating microbial growth.
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