小白河湿地土壤和植物N、P累积特征及分析

发布时间：2018-06-23 23:02

本文选题：植物群落 + 富集系数　；参考：《人民黄河》2017年10期

【摘要】：针对内蒙古包头黄河湿地植被的恢复和保护问题,通过布设黄河湿地的小白河湿地片区4种典型植物群落,即Ⅰ区芦苇混杂区、Ⅱ区草混杂区、Ⅲ区香蒲混杂区、Ⅳ区芦苇区,研究了这4种典型植物群落土壤及优势植物N、P元素含量,并初步分析了影响植物生长的因素。结果表明:湿地土壤中N含量在5—8月呈下降趋势,之后有所回升,土壤P含量频繁波动,但波动幅度较小;湿地植物整体N、P含量在5—10月呈下降趋势,植物整体对N元素的富集能力远高于对P元素的;5—9月4个区植物地上部分对N元素的富集能力高于地下部分的,5—7月植物地上部分对P元素的富集能力高于地下部分的。经初步分析,草和芦苇对黄河湿地小白河片区的修复效果较好,9月左右对植物进行收割对湿地净化效果最好。
[Abstract]:In view of the restoration and protection of the wetland vegetation in the Yellow River, Baotou, Inner Mongolia, 4 typical plant communities in the small white river wetland area of the Yellow River wetland, i. e. reed mixed area in area I, II area grass hybrid area, III area cattail hybrid area, and reed area of IV region, were studied. The contents of N and P elements in the soil and dominant plants of the 4 typical plant communities were studied. The factors affecting plant growth were analyzed. The results showed that the N content in wetland soils decreased from 5 to August, after which the content of soil P fluctuated frequently, but the fluctuation amplitude was small; the overall N, P content of wetland plants decreased in 5 to October, and the enrichment ability of the plant to N element was far higher than that of the P element; 5 to September 4 regions were planted. The enrichment ability of the N element on the ground part is higher than that of the underground part. The enrichment ability of the P element on the ground part of the plant from 5 to July is higher than that in the underground part. After preliminary analysis, the restoration effect of grass and reed to the small white river area of the Yellow River wetland is better, and the purification effect of plant harvesting on the wetland is the best in September or so.
【作者单位】：内蒙古科技大学能源与环境学院;包头市黄河湿地管理中心;
【基金】：国家自然科学基金资助项目(41263010) 内蒙古包头黄河湿地生态系统国家定位观测研究站补助项目(2015-LYPT-DW-037)
【分类号】：X173;X53

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