林地开垦后对不同质地红壤碳氮和磷库的影响

来源 :土壤通报 | 被引量 : 29次 | 上传用户：beige0801

【摘要】

：

林地开垦农用后,土壤有机C和总N、P的浓度及在各团聚体粒级中的分布可发生较大的变化。对亚热带山地两类不同质地的红壤研究表明,林地开垦为旱地和茶园后,有机质和全N明显下降,全P呈轻微下降。下降量壤质土壤(黄泥土)大于粘质土壤(黄粘泥)。表土(0～15cm)的有机C和总N、P下降大于亚表土(15～30cm)。在三个团聚体粒级中,砂粒中有机C和总N、P的下降幅度最大,并随粒径变细下降幅度逐渐变小,表明与

【作者】

：

夏建强章明奎徐建民

【机构】

：

浙江大学环境与资源学院资源科学系,浙江大学环境与资源学院资源科学系,浙江大学环境与资源学院资源科学系浙江杭州310029,浙江杭州310029,浙江杭州310029

【出处】

：

土壤通报

【发表日期】

：

2005年02期

【关键词】

：

林地开垦有机碳养分库质地团聚体粒级

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林地开垦后对不同质地红壤碳氮和磷库的影响

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