摘要
为了分析矿区不同复垦条件下,复垦土地土壤中有效微量元素的的分布特征,采用实地试验与实验室分析相结合的方法,研究不同复垦时间和复垦措施条件下土壤铜(Cu)、铁(Fe)、锰(Mn)、锌(Zn)4种微量元素有效态含量的时空变化规律。结果表明,在复垦土地恢复过程中,不同的微量元素含量变化表现出了不同的特征;恢复时间的延长有利于土壤有效微量元素的恢复和增加;当土壤恢复时间超过8a以后,有效微量元素含量接近或超过自然状态下土壤中的含量。不同治理措施对土壤有效微量元素含量及其分布也有较大影响,覆土+灌草种植等合理的人为治理活动能够提高土壤中有效态微量元素的含量。
Based on field sampling and indoor analysis,both spatial and temporal distribution characters of soil available trace element,including Cu,Fe,Mn,and Zn were studied.Results indicated contents of different soil available trace element showed different trends;and the increase of restoration time favored the content increase of soil available trace element.When the restoration time was over 8 years,contents of available trace element in soil was close to that in natural condition.Different managements also influenced contents of available trace element and its distribution.Rational management,such as soil cover together with shrub and grass planting,was proved to be effective in increasing contents of available trace element.
出处
《水土保持学报》
CSCD
北大核心
2011年第3期126-130,共5页
Journal of Soil and Water Conservation
基金
国家自然科学基金"植被格局对坡沟水蚀过程调控机理研究"(41071182)
"基于小流域淤积信息的侵蚀产沙与侵蚀环境变化响应研究"(40971161)
陕西省自然科学基金重点项目"陕北旱区水资源演变与生态活动响应及调控研究"(2009JZ008)
关键词
有效微量元素
复垦土地
恢复时间
治理措施
矿区
available trace element
restoration land
restoration time
management measure
mine region
