Response of soil enzyme activity to warming and nitrogen addition in a meadow steppe

Soil Research ◽  
2015 ◽  
Vol 53 (3) ◽  
pp. 242 ◽  
Author(s):  
Shiwei Gong ◽  
Tao Zhang ◽  
Rui Guo ◽  
Hongbin Cao ◽  
Lianxuan Shi ◽  
...  
Keyword(s):  
Climate Change ◽  
Enzyme Activity ◽  
Phosphatase Activity ◽  
Soil Nutrients ◽  
Soil Enzymes ◽  
Cellulase Activity ◽  
Soil Enzyme ◽  
Soil Enzyme Activity ◽  
N Addition ◽  
Soil C

Soil enzymes play vital roles in the decomposition of soil organic matter and soil nutrient mineralisation. The activity of soil enzymes may be influenced by climate change. In the present study we measured soil enzyme activity, soil microclimate and soil nutrients to investigate the response of soil enzyme activity to N addition and experimental warming. Warming enhanced phosphatase activity (35.8%), but inhibited the cellulase activity (30%). N addition significantly enhanced the activities of urease (34.5%) and phosphatase (33.5%), but had no effect on cellulase activity. Significant interactive effects of warming and N addition on soil enzyme activity were observed. In addition, warming reduced soil C (7.2%) and available P (20.5%), whereas N addition increased soil total N (17.3%) and available N (19.8%) but reduced soil C (7.3%), total P (14.9%) and available P (23.5%). Cellulase and phosphatase activity was highly correlated with soil temperature and water content, whereas urease activity was determined primarily by soil N availability. The results show that climate change not only significantly affects soil enzyme activity, but also affects the mineralisation of soil nutrients. These findings suggest that global change may alter grassland ecosystem C, N and P cycling by influencing soil enzyme activity.

Soil Enzyme Activities of Wetland in Liangzi Lake

2014 ◽  
Vol 700 ◽  
pp. 235-238
Author(s):  
Han Feng Xiong
Keyword(s):  
Organic Matter ◽  
Enzyme Activity ◽  
Soil Organic Matter ◽  
Phosphatase Activity ◽  
Urease Activity ◽  
Soil Enzyme ◽  
Soil Enzyme Activity ◽  
Wetland Soil ◽  
Positive Correlation ◽  
Change Trend

Soil enzyme activity is closely related to ecosystem course and function.Tendency and intensity of different biochemical course carried on in the soil was reflected by enzyme activity. This paper deals with the soil enzyme activity, content of organic matter, N,P 'and the relation of the enzyme activity with soil organic matter, N,P in soil of Liangzi Lake wetland by soil samples analyzed. The results shows that in the wetland soil,the urease activity is 0.397-0.652 mg/g ;the phosphatase activity is phenol6.52-11.53 mg/g; The activity of Cellulase in the soil is 0.397 - 0.652 mg/g. The change trend of Cellulase and phosphatase activity throughout the year is summer > autumn > winter > spring. The change trend of urinary enzyme throughout the year is summer > spring > autumn > winter. There is notably positive correlation between the urease activity and soil available nitrogen. There is notably positive corelation between the phosphatase activity and soil available P in the paddy field.There is notably positive correlation between the Cellulase activity and soil organic matter.

scholarly journals Effects of Stand Features and Soil Enzyme Activity on Spontaneous Pedunculate Oak Regeneration in Scots Pine Dominated Stands – Implication for Forest Management

2021 ◽  
Author(s):  
Dorota Dobrowolska ◽  
Przemysław Kurek ◽  
Grażyna Olszowska ◽  
Leszek Bolibok
Keyword(s):  
Climate Change ◽  
Enzyme Activity ◽  
Scots Pine ◽  
Humus Horizon ◽  
Soil Enzyme ◽  
Soil Enzyme Activity ◽  
Pedunculate Oak ◽  
Oak Regeneration ◽  
The Creation ◽  
New Generation

Abstract BackgroundA challenge in current forestry is adaptation of managed forests to climate change, which is likely to alter the main processes of forest dynamics, i.e. natural regeneration. Scots pine will probably lose some parts of its distribution area in Europe. However, two native oaks, pedunculate and sessile may maintain or expand the area of their occurrence in central Europe. The utilization of spontaneous (not initialized by foresters) oak regeneration in Scots pine stands for the creation of next generation stands is one of the adaptation methods to climate change. Many factors influencing pedunculate oak regeneration are well known, but there is a lack of knowledge on the relation between soil enzyme activity and the establishment and development of the species. The aim of the study was to identify the relationships among stand characteristics, herb species composition, soil enzyme activity and the establishment or recruitment of oak regeneration in Scots pine-dominated stands. ResultsThe one of the most influential factors shaping the oak seedling count was dehydrogenase activity in the humus horizon. We found that plots without litter and fern cover had higher seedling density. The raspberry ground cover and birch crown projection area had a positive influence on oak seedling number. The factor indicating good conditions for high density of oak saplings was phosphatase activity in the organic horizon. The same enzyme activity but in humus horizon described conditions in which more numerous recruits were observed.ConclusionsThe activity of soil enzymes can be treated as a predictor of site conditions but also as a predictor of the establishment and advancement of oak regeneration. The general density of spontaneous oak regeneration was not sufficient for the creation of new generation forest stands dominated by oak, but it is possible to use them as admixtures in new generation stands.

scholarly journals Seasonality alters drivers of soil enzyme activity in subalpine grassland soil undergoing climate change

2018 ◽  
Vol 124 ◽  
pp. 266-274 ◽  
Author(s):  
Jérémy Puissant ◽  
Vincent E.J. Jassey ◽  
Robert T.E. Mills ◽  
Bjorn J.M. Robroek ◽  
Konstantin Gavazov ◽  
...  
Keyword(s):  
Climate Change ◽  
Enzyme Activity ◽  
Soil Enzyme ◽  
Soil Enzyme Activity ◽  
Grassland Soil

Effects of Peanut Shell Biochar on Soil Nutrients, Soil Enzyme Activity, and Rice Yield in Heavily Saline-Sodic Paddy Field

2021 ◽  
Vol 21 (1) ◽  
pp. 655-664
Author(s):  
Tianxu Yao ◽  
Wentiao Zhang ◽  
Anwari Gulaqa ◽  
Yuefeng Cui ◽  
Yiming Zhou ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Soil Nutrients ◽  
Paddy Field ◽  
Rice Yield ◽  
Soil Enzyme ◽  
Soil Enzyme Activity ◽  
Peanut Shell

Soil enzymatic factors expressing the influence of land use, tillage system and texture on soil biochemical quality

2000 ◽  
Vol 80 (3) ◽  
pp. 419-428 ◽  
Author(s):  
C. M. Monreal ◽  
D. W. Bergstrom
Keyword(s):  
Land Use ◽  
Enzyme Activity ◽  
Soil Enzymes ◽  
Production Systems ◽  
Soil Enzyme ◽  
Soil Enzyme Activity ◽  
Tillage System ◽  
C And N ◽  
Biochemical Quality ◽  
The Impact

We identified complexes of soil nutrient mineralising enzymes expressing the influence of land use, tillage system and texture on soil biochemical quality in production systems involving corn, soybean, wheat and oat. The activities of dehydrogenase, β-glucosidase, L-glutaminase, urease, alkaline phosphatase, and arylsulphatase were measured in 760 soil samples taken from the A horizon of uncultivated land and cultivated Gleysols and Luvisols cropped with conventional tillage (CT) and reduced tillage (RT) systems between 1994 and 1996.Discriminant analysis showed that an enzymatic decomposition factor captured 96% of the total dispersion in soil enzyme activity responding to type of land use and tillage system. The soil enzymes β-glucosidase, dehydrogenase and L-glutaminase contributed most to this factor and were sensitive indicators for assessing the health of microbial mineralisation processes of the C and N cycles. Two biochemical factors expressed the influence of texture on soil enzyme activity. The first, a soil organic C and N decomposition factor captured 68% of the dispersion in enzyme activities was influenced mostly by β-glucosidase and dehydrogenase. The second factor, which captured 32% of the dispersion in enzyme activity, was influenced mostly by arylsulphatase and denotes the effects of texture on a pool generally considered to be extracellular in nature. Cluster analysis helped define seven levels of soil enzyme activity ranging from very low (mostly in soils cropped with CT) to very high [mostly in uncultivated (UC) land and soils cropped with RT]. The identification of key enzymatic factors and the definition of seven levels of enzyme activity serve as a basis for developing quantitative systems monitoring the impact of crop production systems on soil enzymes having specific ecological functions in agricultural land. Key words: Soil enzymes, tillage, land use, texture, dehydrogenase, β-glucosidase, glutaminase

scholarly journals Effects of stand features and soil enzyme activity on spontaneous pedunculate oak regeneration in Scots pine dominated stands – implication for forest management

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Dobrowolska Dorota ◽  
Kurek Przemysław ◽  
Olszowska Grażyna ◽  
Leszek Bolibok
Keyword(s):  
Climate Change ◽  
Enzyme Activity ◽  
Scots Pine ◽  
Humus Horizon ◽  
Soil Enzyme ◽  
Soil Enzyme Activity ◽  
Pedunculate Oak ◽  
Oak Regeneration ◽  
The Creation ◽  
New Generation

Abstract Background A challenge in current forestry is adaptation of managed forests to climate change, which is likely to alter the main processes of forest dynamics, i.e. natural regeneration. Scots pine will probably lose some parts of its distribution area in Europe. However, two native oaks, pedunculate and sessile may maintain or expand the area of their occurrence in central Europe. The utilization of spontaneous (not initialized by foresters) oak regeneration in Scots pine stands for the creation of next generation stands is one of the adaptation methods to climate change. Many factors influencing pedunculate oak regeneration are well known, but there is a lack of knowledge on the relation between soil enzyme activity and the establishment and development of the species. The aim of the study was to identify the relationships among stand characteristics, herb species composition, soil enzyme activity and the establishment or recruitment of oak regeneration in Scots pine-dominated stands. Results The one of the most influential factors shaping the oak seedling count was dehydrogenase activity in the humus horizon. We found that plots without litter and fern cover had higher seedling density. The raspberry ground cover and birch crown projection area had a positive influence on oak seedling number. The factor indicating good conditions for high density of oak saplings was phosphatase activity in the organic horizon. The same enzyme activity but in humus horizon described conditions in which more numerous recruits were observed. Conclusions The activity of soil enzymes can be used as the predictor of the establishment and advancement of oak regeneration but also could be seen as a new dimension of oak regeneration. The general density of spontaneous oak regeneration was not sufficient for the creation of new generation forest stands dominated by oak, but it is possible to use them as admixtures in new generation stands.

scholarly journals The Effects of Physicochemical Parameters on Analysed Soil Enzyme Activity from Alice Landfill Site

2020 ◽  
Vol 18 (1) ◽  
pp. 221
Author(s):  
Nontobeko Gloria Maphuhla ◽  
Francis Bayo Lewu ◽  
Opeoluwa Oyehan Oyedeji
Keyword(s):  
Enzyme Activity ◽  
Moisture Content ◽  
Physicochemical Properties ◽  
Soil Pollution ◽  
Phosphatase Activity ◽  
Physicochemical Parameters ◽  
Invertase Activity ◽  
Soil Enzyme ◽  
Soil Enzyme Activity ◽  
Soil Physicochemical Properties

The soil pollution as a product of xenobiotics, industrial action, agricultural chemicals, or inappropriate disposal of waste can change the natural environment of soil indices and trigger life-threatening situations. Soil enzyme activity is the suitable bio-indicator or parameter for monitoring soil pollution due to their sensitivity that quickly responds to any soil disturbances. Also, they are known to play an essential role in maintaining soil health and a quality environment. This study aimed to determine the levels of enzyme activity in soil from polluted and unpolluted sites and study the relationship between the physicochemical properties and soil enzyme activity to manage soil pollution. Four selected enzymes (Urease, Invertase, Catalase, and Phosphatase) were examined for their activity from forty samples using the assay method for 24 h; the colorimetry spectrophotometer measured their activity. The obtained data revealed that Invertase activity was a predominant enzyme in all soil samples. Whereas, the urease activity had obtained in low amounts for all collection sites, especially on Site A1. Soil pH had discovered to range between 5.8 and 8.51, moisture content values recorded to vary from 0.12% to 9.09%, and soil organic carbon recorded to fluctuate between 0.08% and 1.54%. Urease and phosphatase activity correlated positively with all soil physicochemical properties except for moisture content, which correlated negatively (r = −0.297; p ≥ 0.05). The invertase activity negatively associated all soil physicochemical properties, excluding the moisture content that correlated positively and significantly with invertase activity. We noted that the dumpsite soil contains low enzyme activity levels, which might attribute to the type of waste disposed off. Also, only the phosphatase activity reported correlating positively with all examined physicochemical parameters entirely.

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