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农耕和草地退化使得土壤容重增加，孔隙度和田间持水量减小。禁牧、种植柠条和自然植被恢复有利于增加土壤孔隙度和田间持水量及减小土壤容重。随着植被恢复年限的增加，土壤容重呈减小的趋势。
植被恢复对不同土壤团聚体物理性质的影响
【摘 要】
：
农耕和草地退化使得土壤容重增加，孔隙度和田间持水量减小。禁牧、种植柠条和自然植被恢复有利于增加土壤孔隙度和田间持水量及减小土壤容重。随着植被恢复年限的增加，土壤容重
【机 构】
：
重庆长江工程勘察设计研究院
【出 处】
：
建材与装饰
【发表日期】
：
2004年期
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