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陕北沙区天然臭柏灌丛地土壤养分特性研究

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摘要 对陕北沙区天然臭柏灌丛地土壤养分(土壤有机质、全氮、速效钾和速效磷)的变化规律进行研究,结果表明:①陕北沙区天然臭柏灌丛地土壤有机质、全氮和速效钾在水平和垂直方向都具有空间异质性,土壤速效磷空间分布较均一。②陕北沙区天然臭柏灌丛地、油蒿覆盖地和裸地三生境,对不同土壤养分的空间异质性作用不同,对土壤养分的富集能力也不同。臭柏灌丛地对土壤有机质和全氮的富集能力最强,对土壤速效磷的富集能力最弱;油蒿覆盖地对土壤速效钾和速效磷的富集能力强;裸地内土壤养分少且分布均匀。
作者 田丽
出处 《陕西农业科学》 2012年第2期94-97,共4页 Shaanxi Journal of Agricultural Sciences
基金 陕西省教育厅专项科研计划项目(09JK839)
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