首页|弃耕地植被恢复过程中土壤理化性质演变趋势研究

弃耕地植被恢复过程中土壤理化性质演变趋势研究

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通过对安塞纸坊沟流域14块不同弃耕年限的草地土壤理化性质的研究表明:随着弃耕地植被的恢复,土壤容重降低、孔隙度增大、质地改善;土壤有机质含量、CEC、全氮含量、全钾含量、水解氮及速效钾含量逐步提高,土壤盐分含量、土壤pH值有逐步降低的趋势,说明随着植被的恢复,土壤理化性质在不断优化.另外植被生物量与土壤有机质、CEC、全钾、速效钾、全氮及水解氮均呈极显著正相关,与土壤pH值与土壤容重呈极显著负相关,说明土壤与植被具有互动效应.
Changes of soil physical and chemical properties during vegetation restoration on abandoned cropland
Study was made on soil physical and chemical properties of 14 pieces of abandoned cropland with different years of abandonment. The results showed that soil bulk density was descending and the texture was improving; soil organic matter content, CEC, total K, hydrolyze N and available K were increasing during vegetation restoration, while soil salt content and soil pH value were decreasing. It meant soil physical and chemical properties were improving during the vegetation restoration. In addition, plant biomass correlated closely with soil organic matter content, CEC, total N, total K, hydrolyze N, available K, pH and soil bulk density. It showed that soil and vegetation interacted.

abandoned croplandabandoned yearsvegetation restorationsoil physical and chemical propertieschanges

宋娟丽、吴发启、姚军、佘雕、包耀贤

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西北农林科技大学资源环境学院,陕西,杨凌,712100

弃耕地 弃耕年限 植被恢复 土壤理化性质 演变趋势

中国科学院知识创新工程项目

KZCX2-XB2-05-01

2009

干旱地区农业研究
西北农林科技大学

干旱地区农业研究

CSTPCDCSCD北大核心
影响因子:1.021
ISSN:1000-7601
年,卷(期):2009.27(3)
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