Effects of Vegetation Restoration on Soil Nutrients in Yifengxi Wetlands
To understand the changes of soil physicochemical properties after vegetation restoration in the Yifengxi wetland,the mangrove wetland of Yifengxi was selected as the research object,and the tidal flat was used as the control to analyze the dynamic changes of nutrient indexes,such as pH,organic matter,total nitro-gen,alkalihydrolyzed nitrogen,total phosphorus,available phosphorus,total potassium,and available potas-sium in the soil layer of 0-30 cm under different patterns of vegetation restoration(pure forest of S.apetala,mixed forest of Sonneratia apetala+Aegiceras corniculatum+Kandelia obovate+Acrostichum aureum).The re-sults showed that:after the vegetation restoration,soil pH decreased significantly,and soil organic matter,to-tal nitrogen,alkaline dissolved nitrogen,total phosphorus,effective phosphorus,total potassium and quick-acting potassium increased;under different restoration modes,except for pH,soil organic matter,total nitro-gen,alkali hydrolyzed nitrogen,total phosphorus,effective phosphorus,total potassium and available potassi-um in mixed forests were significantly higher than that in pure forests(P<0.05),which indicated that soil nutri-ent contents in the mixed forest were higher,and the effect of vegetation restoration was better.Therefore,the pattern of mixed forest should be used in the subsequent mangrove restoration to ensure the effect of vegetation restoration.
Yifengxi Wetlandmangrovevegetation restorationsoil physical and chemical properties
万方数据
维普
