不同生态恢复措施下宁夏黄土丘陵典型草原土壤质量评价

为了研究生态恢复措施对草原土壤性状和土壤质量的影响,2016年在宁夏黄土高原丘陵区典型草原,以放牧草地（FM）为对照,研究了封育（FY）、水平沟（SP）和鱼鳞坑（YL）3种恢复措施对0~40 cm土壤理化性质和生物学特性的影响,评价了各措施下的土壤质量。结果表明：1）FM土壤容重最高,土壤黏粒含量、田间持水量和总孔隙度较低;FY、SP和YL措施间土壤物理性质差异不显著（P〉0.05）。2）土壤有机质、全氮和速效氮以FY最高,SP和YL较低;全磷与速效钾含量以FM最高,SP最低。3）土壤蔗糖酶和脲酶活性呈FY〉SP〉YL〉FM;蛋白酶和磷酸酶呈FY草地最高,YL最低;细菌、放线菌和真菌在各处理间...

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Bibliographic Details
Published in农业工程学报 Vol. 33; no. 18; pp. 102 - 110
Main Author 周瑶 马红彬 贾希洋 张蕊 宿婷婷 周静静
Format Journal Article
LanguageChinese
Published 宁夏大学西北土地退化与生态恢复省部共建国家重点实验室培育基地,银川750021 2017
宁夏大学农学院,银川,750021%宁夏大学农学院,银川750021
Subjects
典型草原
土壤
土壤性状
土壤质量
封育
恢复
水平沟
鱼鳞坑
土壤性状
水平沟
恢复
典型草原
soil
typical steppe
enclosures
contour trench
土壤
鱼鳞坑
fish-scale pits
土壤质量
soil quality
封育
soil properties
restoration
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Summary:为了研究生态恢复措施对草原土壤性状和土壤质量的影响,2016年在宁夏黄土高原丘陵区典型草原,以放牧草地（FM）为对照,研究了封育（FY）、水平沟（SP）和鱼鳞坑（YL）3种恢复措施对0~40 cm土壤理化性质和生物学特性的影响,评价了各措施下的土壤质量。结果表明：1）FM土壤容重最高,土壤黏粒含量、田间持水量和总孔隙度较低;FY、SP和YL措施间土壤物理性质差异不显著（P〉0.05）。2）土壤有机质、全氮和速效氮以FY最高,SP和YL较低;全磷与速效钾含量以FM最高,SP最低。3）土壤蔗糖酶和脲酶活性呈FY〉SP〉YL〉FM;蛋白酶和磷酸酶呈FY草地最高,YL最低;细菌、放线菌和真菌在各处理间变化各异,微生物总量呈FY〉FM≈SP〉YL,但微生物生物量碳、氮呈FY〉YL≈SP〉FM（P〈0.05）;土壤因子间存在一定的相关性。4）隶属函数结合因子分析法评价的土壤质量综合得分为FY〉SP〉FM〉YL。因此封育是最有利于研究区退化草地土壤质量恢复的措施,研究结果可以为宁夏典型草原生态建设提供理论基础。
Bibliography:11-2047/S
In this paper, the experiment area is dry and prone to soil erosion, in order to stop slope runoff and promote rapid vegetation restoration, a restoration program was implemented. So it is significant for grassland ecological construction to study on the effects of ecological restoration measures on soil properties and soil quality. A study had been done to investigate the different of 0-40 cm soil depth of soil properties and assessment of soil quality under different restoration measures in typical steppe grassland in Ningxia. We selected the sites that has been subject to enclosure（FY）, contour trench（SP）, fish-scale pits（YL）, which were implement in 2001 and grazed（FM） （as a reference, traditional grazing with some supplement） grassland. The results showed that： 1） Soil bulk density of grazing grassland was the highest （P 〈0.05） whereas the soil clay content, field water holding capacity and total porosity were the lowest （P〈0.05）, and there was no significant difference （P 〉 0.05） in soil physic
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2017.18.014