scholarly journals Effect of land use on soil enzyme activities at karst area  in Nanchuan, Chongqing, Southwest China

2014 ◽  
Vol 60 (No. 1) ◽  
pp. 15-20 ◽  
Author(s):  
Q. Li ◽  
Liang JH ◽  
He YY ◽  
Hu QJ ◽  
S. Yu
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Enzyme Activities ◽  
Soil Enzyme ◽  
Natural Forest ◽  
Karst Area ◽  
Soil Enzyme Activities ◽  
Soil Urease ◽  
Rock Desertification ◽  
Clear Change

The study of soil enzyme activities under different land use is of importance for exploration of the soil quality evolution and its evaluation during the revegetation at karst area in Nanchuan, Chongqing, China. Seven kinds of land use were chosen as subject, aiming at revealing the changes in soil enzyme activities through experimental and statistical analysis. The results showed that different land use significantly influenced the enzyme activities. Soil urease, invertase, catalase and amylase behaved the different change. A descending order of urease activity was artificial forest, natural forest, shrubbery, grassland, slope field into terrace, rock desertification and farmland. As to invertase and amylase, they have no clear change orderliness with land use change. Moreover, no significant change was observed in catalase activity and the lower value was found in natural forest. The above results cannot reflect the land use effect on the enzyme activities. According to the soil enzyme index (SEI), it can be seen that the SEI changed with an order of natural forest > artificial forest > grassland > shrubbery > farmland > slope field into terrace > rock desertification, which can objectively and fully evaluate the land use change in soil enzyme.

The Soil Enzyme Activities with Age of Tea in Three Gorges Reservoir Area

2014 ◽  
Vol 989-994 ◽  
pp. 1292-1296 ◽  
Author(s):  
Li Ping Zhang ◽  
Guo Mei Jia ◽  
Ying Xi
Keyword(s):  
Organic Carbon ◽  
Enzyme Activities ◽  
Negative Relationship ◽  
Soil Enzyme ◽  
Three Gorges Reservoir Area ◽  
Three Gorges ◽  
Soil Enzyme Activities ◽  
Soil Urease ◽  
Tea Garden ◽  
Soil Organic Matter Formation

Enzyme activities play key roles in the biochemical functioning of soils, including soil organic matter formation, degradation and nutrient cycling. Activities of invertase, urease, and catalase were analyzed at different age of tea garden. The results showed that urease activity only showed a significantly negative relationship with the age of tea, and a significant positive relationship with organic carbon. This indicated that soil urease acitivity could respond well to the change of soil organic carbon and is a more sensitive indicator of soil fertility than other enzyme activities. The study also found that the organic carbon was relatively low in 50yr site, compared with lower age of sites. This may be caused by the high activities of invertase and catalase per unit of organic carbon in the soil of tea which tends to help decompose and therefore decrease the organic carbon in soil

scholarly journals Enzyme Activity Variability and Comparison in Soils under Medicinal versus Crop Plants of Anguo City, China

2020 ◽  
Vol 2 (1) ◽  
pp. p109
Author(s):  
Wenke Liu
Keyword(s):  
Alkaline Phosphatase ◽  
Medicinal Plants ◽  
Medicinal Plant ◽  
Plant Species ◽  
Enzyme Activities ◽  
Soil Depth ◽  
Soil Enzyme ◽  
Soil Enzyme Activities ◽  
Crop Fields ◽  
Soil Urease

Long-term continuous cultivation of different plant species in a similar agroecosystem intensively may result in divergent variability in soil fertility, particularly soil biochemical properties. In this study, an investigation was conducted to clarify the variability of five soil enzyme activities (urease, protease, catalase, polyphenol oxidase and alkaline phosphatase) of croplands under medicinal plants (herbal fields) and food crops (crop fields) in Anguo city, a traditional cultivation base for Chinese medicinal plants in China. The results showed that five soil enzyme activities were similar between herbal and crop fields. However, soil urease and alkaline phosphatase activities of herbal and crop fields decreased significantly with soil depth (0-60 cm), while protease, catalase, polyphenol oxidase activities were similar in all soil layers for two kinds of fields. There were largely variation scenes at linear correlation analysis between soil physicochemical traits and enzymatic activities under medicinal plant versus crop fileds although extensively significant correlations were presented. In conclusion, soil enzyme activities were similar in two type of farmlands, and soil urease and alkaline phosphatase activities decreased with soil depth for both fields. Inconsistent linear correlations between soil physicochemical traits and enzymatic activities under medicinal plant versus crop fields were presented, so soil enzymatic activity variation was subjected to soil physicochemical traits dominated by agronomic managements designed for specific plant species.

Change Analysis of Enzyme Activity under Different Conditions of Film Remnant in Soil

2012 ◽  
Vol 518-523 ◽  
pp. 39-43
Author(s):  
Xiao Guang Zhao ◽  
Yuan Yuan Guan ◽  
Wen Yu Huang
Keyword(s):  
Enzyme Activity ◽  
Enzyme Activities ◽  
Scientific Basis ◽  
Soil Enzyme ◽  
Soil Microorganism ◽  
Soil Enzyme Activities ◽  
Change Analysis ◽  
Soil Material ◽  
The Relationship

In this paper, simulated experiments were performed in pots by using soil materials in different conditions of film remnant. Based on the research on soil microorganism quantity trends of soil enzyme activities were analyzed systematically: soil without film remnant, soil with film remnant for 5, 10, 15 and 20 years. By analyzing crop progress, the relationship with soil material was studied, in order to provide scientific basis for the variation laws between different conditions of film remnant and the activity of soil enzyme.

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