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《Ecologic Science》 2004-02
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Preliminary studies on effects of restored mangroves on coastal soils

CAO Zhi-mian1, YE Yong1, 2, LU Chang-yi1, 2, ZHENG Feng-zhong1, 2(1.Environmental Science Research Center, Xiamen University, Xiamen 361005, China, 2. Key Lab. for Marine Environmental Science of Ministry of Education, Xiamen University, Xiamen 361005, China)  
Effects of mangroves restored in different years on physical and chemical properties of coastal soils were studied. Results showed that the effects on deep soils (20-25cm) were more significant than surface soils (0-5cm). Eh values of 20-25cm soils under mangrove forests were higher than those of barren soils. Restored mangroves strongly assimilated nutrients from soils to accelerate their growth. The contents of NH4+-N were higher than those of NO2--N and NO3--N and NH4+-N was the main inorganic nitrogen assimilated by mangroves. Although its contents were nearly the same as the inorganic nitrogen, PO43--P was assimilated little. As mangroves grew, pH values at depth of 20-25cm decreased significantly and soil acidification was strengthened. There was no significant difference in SO42- contents among the surface soils but at depth of 20-25cm, the contents of the soils under mangrove forests was higher than those of barren soils.
【Fund】: 国家自然科学基金资助项目(40276036);; 福建省自然科学基金资助项目;; 厦门大学环境科学研究中心“凌峰”科研奖励计划
【CateGory Index】: S714
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