ZHOU Yongwei,GE Yao,AI Ning,et al.Soil Nutrient Variation Pattern and Fertility Evaluation in Different Vegetation Types in Nanniwan Wetland[J].Research of Soil and Water Conservation,2021,28(05):76-80.
南泥湾湿地不同植被类型土壤养分变化规律与肥力评价
- Title:
- Soil Nutrient Variation Pattern and Fertility Evaluation in Different Vegetation Types in Nanniwan Wetland
- 文章编号:
- 1005-3409(2021)05-0076-05
- Keywords:
- soil nutrients; soil fertility; vegetation type; Nanniwan wetland
- 分类号:
- S158
- 文献标志码:
- A
- 摘要:
- 为了研究南泥湾湿地不同植被类型土壤养分特征,选取河滩草地、旱地草地、灌木地、小叶杨林地4种不同植被类型为研究对象,并运用单因素方差分析法和土壤肥力综合评价法对其进行了分析。结果表明:(1)在0—40 cm土层,南泥湾湿地4种植被类型间土壤碱解氮含量和pH值无显著差异(p>0.05); 灌木地的土壤有机质、全磷和速效磷含量与其余植被类型均存在显著差异(p<0.05);(2)不同植被类型的pH值随土层深度增加而增加,但变幅不大; 而土壤有机质、全磷、速效磷和碱解氮在整体上呈现降低趋势;(3)南泥湾湿地4种植被类型土壤肥力综合评价值为河滩草地(0.433)>小叶杨林地(0.387)>旱地草地(0.374)>灌木地(0.133),且河滩草地、小叶杨林地和旱地草地的土壤肥力为中等级水平,灌木地的土壤肥力为低等级水平。该研究结果明确了南泥湾湿地不同植被类型土壤质量情况,为今后研究区林业生态工程建设以及生态修复提供了科学依据与数据支撑。
- Abstract:
- In order to study the soil nutrient characteristics in different vegetation types in the Nanniwan Wetland,we selected four different vegetation types: river beach grassland,dryland grassland,shrubland,and Populu ssimoni Carr as the research objects,and used single-factor analysis of variance and comprehensive soil fertility evaluation to evaluate the soil nutrients in these types of vegetation. The results show that:(1)in the 0—40 cm soil layer,there was no significant difference in soil alkaline nitrogen content and pH value among the four types of vegetation in Nanniwan wetland(p>0.05); the soil organic matter,total phosphorus and available phosphorus contents of shrub forest land were significantly different from those in the other vegetation types(p<0.05);(2)pH values of different vegetation types increased with the increase of the soil depth,but the change was not great,while the soil organic matter,total phosphorus,available phosphorus and alkali-hydrolyzable nitrogen showed the decreasing trend as a whole;(3)the comprehensive evaluation values of soil fertility in four vegetation types in Nanniwan Wetland decreased in the order: river beach grassland(0.433)>Populus simonii Carr(0.387)>dry grassland(0.374)> shrub land(0.133); in addition,the soil fertility of river beach grassland,Populu ssimoni Carr and dryland grassland was at the middle level,and the soil fertility of shrubland was at the low level. The results of this study can clarify the soil qualities of different vegetation types in the Nanniwan Wetland,and provide scientific basis and data support for the construction of forestry ecological engineering and ecological restoration in the study area in the future.
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备注/Memo
收稿日期:2020-09-03 修回日期:2020-10-27资助项目:国家重点研发计划课题(2016YFC0501705,2016YFC0501602); 国家自然科学基金项目(31370541); 大学生创新训练计划项目(S202010719047)第一作者:周永维(1996—),女,贵州遵义人,硕士研究生,主要从事动物及修复生态学研究。E-mail:zhou8765@163.com通信作者:刘长海(1965—),男,陕西淳化人,博士,教授.主要从事动物生态学与修复生态学研究。E-mail:yadxlch@yau.edu.cn