【摘 要】
:
To examine changes in surface soil quality over time in Populus × xiaohei shelterbelts, we collected soil samples from five shelterbelts of different ages and also from former cropland left fallow for
【出 处】
:
Journal of Forestry Research
论文部分内容阅读
To examine changes in surface soil quality over time in Populus × xiaohei shelterbelts, we collected soil samples from five shelterbelts of different ages and also from former cropland left fallow for 25 years. Twenty-one surface soil(0–20 cm) properti
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