Study of the Effects of Land Use on Hydrochemistry and Soil Microbial Diversity

Abstract

The objectives of this study were to compare the influence of land use, to determine which land has an impact on hydrochemistry and to clarify the impact of land use on soil microbial diversity and the correlation between hydrochemistry and soil microbial diversity. The impacts were assessed through chemical and biological data from 4 land-use groups. The results showed that soil microbial diversity and water chemical composition were different under different land uses. There was a strong correlation between the main hydrochemical components under different land uses, and the M03 had the highest correlation. The Shannon index was the largest for M01, the Simpson index was the smallest for M01, and the Chao1 and Ace indexes were the largest for M02. Actinobacteria, Proteobacteria and Acidobacteria were the dominant bacteria with different land uses, and some bacteria were present or absent depending on the land use. It was found that the soil CO2 content was different with different land uses. Soil CO2 content, hydrochemistry and soil microbial species were related to each other. A heatmap analysis showed that the F− and soil CO2 content showed a strong correlation with soil microorganisms and that the dominant bacteria were positively correlated. Under different land uses, hydrochemistry, soil CO2 and soil microorganisms interact with one another.

Investigation of the Factors Affecting the Treatment Performance of a Stormwater Horizontal Subsurface Flow Constructed Wetland Treating Road and Parking Lot Runoff

“…Most of the microorganisms were found to have high positive correlation to different soil quality parameters except for pH and Pb. Among the microorganisms, Gemmatimonadetes was found to have positive correlation with r value of 0.899 to pH while negative correlation (r value: −0.686 to −0.931) to other parameters Proteobacteria survives through symbiosis with bacteria and other plant roots, and the high proportion of Proteobacteria have significant effect on nitrogen reduction and plant growth in the facility [47][48][49][50]. Actinobacteria is a microorganism that parasites on plant roots to create root holes, perform nitrogen fixation and reduce heavy metals [51,52].…”

Soil Bacterial Diversity and Its Relationship with Soil CO2 and Mineral Composition: A Case Study of the Laiwu Experimental Site

“…The soil CO 2 content was the highest in L02. At the same depth, the soil CO 2 concentrations with different land uses were different [ 49 ].…”

Characteristics of soil CO2 under different conditions and its influence on water chemical composition: an experimental and modeling study in the laboratory

“…The soil CO 2 concentration is higher than atmospheric CO 2 (Zhang et al 2019), and with an annual global efflux from soil respiration equivalent to approximately 10% of atmospheric CO 2 (Liu and Huang 2015). Soil is the second largest carbon pool after the ocean and the main source of atmospheric CO 2 (Jenkinson et al 1991;Robert 2004); approximately 77 × 10 15 gCyr −1 a −1 CO 2 is released into the atmosphere through soil respiration (Raich and Potter 1995).…”

“…Field experiments in 2016 showed that different land use patterns had different effects on soil CO 2 concentration and microbial community composition. A previous report of these data was discussed by Zhang (Zhang et al 2019). Based on field observation data, laboratory experiments were conducted to analyze the correlation between the soil CO 2 and water chemical composition under natural conditions.…”