ZHOU Shifeng,WEI Yajuan,HE Lei,et al.Soil Nutrient Distribution Characteristics of Baotou Nanhai Wetland in Different Seasons[J].Northern Horticulture,2023,(20):69-76.[doi:10.11937/bfyy.20230175]
包头市南海湿地不同季节土壤养分分布特征
- Title:
- Soil Nutrient Distribution Characteristics of Baotou Nanhai Wetland in Different Seasons
- 文章编号:
- 1001-0009(2023)20-0069-08
- 分类号:
- S 714.2
- 文献标志码:
- A
- 摘要:
- 以内蒙古包头市南海湿地土壤理化性质为试材，采用野外取样与室内试验分析相结合的方法，研究了内蒙古包头市南海湿地不同季节（春季、夏季和秋季）土壤养分分布特征及其影响因素，以期为该区域土壤质量评价提供参考依据。结果表明：1）包头市南海湿地土壤理化指标均符合正态分布。其中，全盐量、有机质、全氮和全磷均具有强变异性，说明不同季节这4种指标的变异程度较大。2）不同季节平均土壤有机质、全氮、全磷和全钾含量分别为9.59~18.80、0.36~0.70、0.67~1.07、16.21~22.39 g·kg-1。3）各土层土壤全盐量、有机质、全氮和全磷随季节呈先增后减的变化趋势，土壤pH、全钾随季节呈逐渐递减的变化趋势。4）在同一季节，土壤容重、土壤含水量、土壤总孔隙度、土壤毛管孔隙度和土壤非毛管孔隙度随着土层深度增加变化各异。土壤全盐量、有机质、全氮和全磷随土层深度增加整体呈逐渐降低的趋势。5）冗余分析结果表明，pH和季节是影响湿地土壤养分的潜在驱动因子。其中pH对湿地土壤养分的影响最大，为37.90%。该研究结果可为包头黄河湿地的植被重建、生态修复和科学管理提供参考依据。
- Abstract:
- Soil physical and chemical properties of Nanhai Wetland in Baotou City，Inner Mongolia was used as test material，soil nutrient nutrient distribution characteristics and their influencing factors in different seasons (spring，summer and autumn) of Nanhai Wetland in Baotou City，Inner Mongolia were analyzed based on field sampling and lab analysis methods,in order to provide reference for the evaluation of soil quality in the region.The results showed that,1)the soil physicochemical indexes in Baotou Nanhai Wetland all conformed to normal distribution.Among them，total salinity，organic matter，total nitrogen and total phosphorus all had strong variability，indicating a large degree of variation in these four indicators in different seasons.2) The average soil organic matter，total nitrogen，total phosphorus and total potassium contents in different seasons ranged from 9.59 to 18.80 g·kg-1，0.36 to 0.70 g·kg-1，0.67 to 1.07 g·kg-1 and 16.21 to 22.39 g·kg-1，respectively.3) Total salinity，organic matter，total nitrogen and total phosphorus of each soil layer showed a trend of increasing and then decreasing with season，and soil pH and total potassium showed a decreasing trend with the season.4) Soil bulk density，soil moisture，total soil porosity，soil capillary porosity and soil non-capillary porosity varied with increasing soil depth within the same season.Soil total salinity，organic matter，total nitrogen and total phosphorus showed an accumulative decrease with soil depth.5) Redundancy analysis (RDA) revealed that pH and season were the potential drivers affecting soil nutrients in Nanhai Wetland.pH had dominant effect on soil nutrients amounting to 37.90% in Nanhai Wetland.The results will provide reference for the revegetation，ecological restoration and scientific management of the Yellow River wetland in Baotou.
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备注/Memo
第一作者简介：周士锋（1973-），男，本科，副教授，现主要从事湿地生态学、土壤学及园林植物应用等研究工作。E-mail：wangwf19811001@163.com.责任作者：魏亚娟（1994-），女，博士，副教授，现主要从事荒漠化防治等研究工作。E-mail：weiyajuan0305@163.com.基金项目：国家自然科学基金资助项目（52179051）。收稿日期：2023-01-17