| Effects of vegetation recovery modes on major enzyme activities, microbial diversity, and nutrients in hilly soils of southern Ningxia |
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| DOI：10.7606/j.issn.1000-7601.2022.03.25 |
| Key Words: vegetation recovery modes soil enzyme activity soil microbial diversity soil nutrients |
| Author Name | Affiliation | | TAO Jiyang | School of Civil and Hydraulic Engineering，Ningxia University，Yinchuan, Ningxia 750021，China | | TAN Junli | School of Civil and Hydraulic Engineering，Ningxia University，Yinchuan, Ningxia 750021，China
Engineering Research Center for Efficient Utilization of Modern Agricultural Water Resources in Arid Regions，Ministry of Education，Yinchuan, Ningxia 750021，China
Engineering Technology Research Center of Water-saving Irrigation and Water Resource Regulation in Ningxia，Yinchuan, Ningxia 750021, China | | ZHENG Feilong | School of Civil and Hydraulic Engineering，Ningxia University，Yinchuan, Ningxia 750021，China | | WANG Xina | School of Agriculture, Ningxia University, Yinchuan, Ningxia 750021, China | | ZHANG Weijiang | School of Civil and Hydraulic Engineering，Ningxia University，Yinchuan, Ningxia 750021，China
Engineering Research Center for Efficient Utilization of Modern Agricultural Water Resources in Arid Regions，Ministry of Education，Yinchuan, Ningxia 750021，China
Engineering Technology Research Center of Water-saving Irrigation and Water Resource Regulation in Ningxia，Yinchuan, Ningxia 750021, China |
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| Abstract: |
| Exploring the influence of different vegetation recovery modes on soil major enzyme activities, microbial diversity, and nutrients can provide a theoretical basis for selecting the most appropriate vegetation recovery mode in the local area of southern Ningxia. The method of the combination of field sampling and laboratory experiments were used to study soil enzyme activity, microbial diversity and soil nutrient characteristics under three vegetation recovery modes (seven year’s Robinia pseudoacacia, Larix gmelinii (Rupr.) Kuzen., Pinus tabuliformis Carr.) and the wasteland in the hilly area soils of southern Ningxia. The Illumina-Miseqqualcomm sequencing technology was used to conduct the sequencing analyses for bacteria in the soil of 16 SrDNA gene segments of V3~V4 area and fungal 18 SrDNA gene segments of V4 area. The result showed: (1) In the 0~30 cm soil layer, the urease and sucrase activities of wasteland and Robinia pseudoacacia soil were stronger while the alkaline phosphatase and catalase activities of Pinus tabuliformis Carr. and Larix gmelinii (Rupr.) Kuzen. were stronger. (2) The response of soil fungal diversity to vegetation recovery model was stronger than that of soil bacteria. The ACE, Chaol and Shannon indexes of soil bacteria were higher than those of soil fungi. There was no significant difference in the diversity of soil fungi among the four recovery modes. The improvement effect of Pinus tabuliformis Carr. on soil fungal diversity was significant. (3) The contents of soil total phosphorus, alkali-hydrolytic nitrogen, available phosphorus and organic matter in wasteland were the lowest while the contents of available nutrients and organic matter in Robinia pseudoacacia were the highest. Soil urease and catalase activities were significantly correlated with soil nutrients, and soil microbial diversity was closely correlated with soil organic matter and total phosphorus contents. Robinia pseudoacacia can significantly improved soil nutrient status and enzyme activities, and therefore it could be considered as a species for local vegetation recovery. |
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