摘要
苏北沿海防护林土壤抗侵蚀能力强 ,多数林分表土抗蚀性和抗冲性高 ,而深层土壤可蚀性差。根系对可蚀性有一定影响 ,根系越小影响越大 ,对抗冲性的影响比抗蚀性更加密切。人为扰动对可蚀性影响很大 ,耕作可提高土壤可蚀性 ,而机械清淤则使它大大减小。土壤质地、结构、容重、有机质含量等与抗冲、抗蚀显著相关 。
Soil erosion resistance ability of forest lands in silting coastal area of northern Jiangsu province was strong.The anti erodibility and anti scouribility of top soil in most forest lands was the highest.Whereas in deep soil the two factors reduced.Soil erodibility was obviously influenced by tree roots,especially fine roots.Besides, there was a closer relationship between soil antiscouribility and roots.Artificial disturbance had a great influence on erodibility.Cultivation can improve soil erodibility.But mechanical silt elimination had an adverse effect.There was significant correlation between soil texture ,structure ,bulk density,organic matter etc. and erodibility.Soil physical and chemical property had a closer relationship with anti erodibility than with anti scouribility.
出处
《水土保持研究》
CSCD
2001年第1期150-154,共5页
Research of Soil and Water Conservation
基金
国家科技攻关项目
