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[1]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.

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Soil Nutrient Variation Pattern and Fertility Evaluation in Different Vegetation Types in Nanniwan Wetland

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 05 Page number: 76-80 Column: Public date: 2021-08-20

Title:: Soil Nutrient Variation Pattern and Fertility Evaluation in Different Vegetation Types in Nanniwan Wetland

Author(s):: ZHOU Yongwei,GE Yao,AI Ning,HAO Baobao,LI Yang,QIANG Dahong,LIU Zhanghai; (College of Life Sciences,Yan'an University,Yan'an,Shaanxi 716000,China)

Keywords:: soil nutrients; soil fertility; vegetation type; Nanniwan wetland

CLC:: S158

DOI:: -

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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Last Update: 2021-08-20