黄河入海口生态恢复区土壤空间异质性研究

发布时间：2018-04-05 19:12

本文选题：生态恢复区　切入点：土壤属性　出处：《人民黄河》2016年03期

【摘要】：为了研究黄河入海口生态恢复区不同植物群落下土壤属性的空间分异特征,垂直于海岸线由黄河岸边向海滩方向布设2条样带A—E、AA—EE,在每条样带的5个不同植物群落内采集土样,测定样品的碱解氮、有机质、含水率、可溶性盐和p H值。结果表明:研究区0~30 cm土壤中碱解氮、有机质、含水率、可溶性盐的平均含量和p H值分别为0.355 8mg/kg、0.330 4 g/kg、26.61%、0.926 2 g/kg、8.62;在水平方向上,土壤碱解氮和有机质含量以样带上香蒲—假苇拂子茅群落为中心向黄河岸边和近海光滩方向逐渐下降;土壤p H值、含水率及可溶性盐含量自黄河岸边向近海光滩方向呈波动式上升。此外,除p H值属于弱变异水平外,其余均为中等变异水平,土壤属性变异不明显。
[Abstract]:In order to study the spatial differentiation characteristics of soil properties under different plant communities in the ecological restoration area of the estuary of the Yellow River,Two samples were arranged from the shore of the Yellow River to the beach. Soil samples were collected from 5 different plant communities in each transect, and the alkaline dissolved nitrogen, organic matter, moisture content, soluble salt and pH value of the samples were measured.The results showed that the average content and pH value of alkali-hydrolyzed nitrogen, organic matter, water content, soluble salt were 0.355 mg / kg 路kg ~ (-1) 0.330 4 g / kg ~ 26.61% ~ 0.926 2 g / kg ~ (-1) ~ 8.62 g 路kg ~ (-1), respectively.The soil alkali-hydrolyzed nitrogen and organic matter content decreased gradually to the Yellow River shore and the offshore smooth beach, the soil pH value, the soil pH value, and the soil pH value, and the soil pH value decreased gradually.Water content and soluble salt content fluctuate from the bank of the Yellow River to the offshore beach.In addition, except pH value belongs to weak variation level, the others are medium variation level, soil attribute variation is not obvious.
【作者单位】：鲁东大学资源与环境工程学院;中国科学院烟台海岸带研究所;
【基金】：国家自然科学基金资助项目(41171424)
【分类号】：S158

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