Influence of permafrost on water storage in West Siberian peatlands revealed from a new database of soil properties

2012 ◽  
Vol 23 (1) ◽  
pp. 69-79 ◽  
Author(s):  
Laurence C. Smith ◽  
David. W. Beilman ◽  
Konstantin V. Kremenetski ◽  
Yongwei Sheng ◽  
Glen M. MacDonald ◽  
...  
2014 ◽  
Vol 38 (1) ◽  
pp. 82-93 ◽  
Author(s):  
Rodrigo Vieira Luciano ◽  
Jackson Adriano Albuquerque ◽  
Álvaro Luiz Mafra ◽  
André da Costa ◽  
Josué Grah

In the subtropical regions of southern Brazil, rainfall distribution is uneven, which results in temporal variability of soil water storage. For grapes, water is generally available in excess and water deficiency occurs only occasionally. Furthermore, on the Southern Plateau of Santa Catarina, there are differences in soil properties, which results in high spatial variability. These two factors affect the composition of wine grapes. Spatio-temporal analyses are therefore useful in the selection of cultural practices as well as of adequate soils for vineyards. In this way, well-suited areas can produce grapes with a more appropriate composition for the production of quality wines. The aim of this study was to evaluate the spatio-temporal variability of water storage in a Cambisol during the growth cycle of a Cabernet Sauvignon vineyard and its relation to selected soil properties. The experimental area consisted of a commercial 8-year-old vineyard in São Joaquim, Santa Catarina, Brazil. A sampling grid with five rows and seven points per row, spaced 12 m apart, was outlined on an area of 3,456 m². Soil samples were collected with an auger at these points, 0.30 m away from the grapevines, in the 0.00-0.30 m layer, to determine gravimetric soil moisture. Measurements were taken once a week from December 2008 to April 2009, and every two weeks from December 2009 to March 2010. In December 2008, undisturbed soil samples were collected to determine bulk density, macro- and microporosity, and disturbed samples were used to quantify particle size distribution and organic carbon content. Results were subjected to descriptive analysis and semivariogram analysis, calculating the mean relative difference and the Pearson correlation. The average water storage in a Cambisol under grapevine on ridges had variable spatial dependence, i.e., the lower the average water storage, the higher the range of spatial dependence. Water storage had a stable spatial pattern during the trial period, indicating that the points with lower water storage or points with higher water storage during a certain period maintain these conditions throughout the experimental period. The relative difference is a simple method to identify positions that represent the average soil water storage more adequately at any time for a given area.


2013 ◽  
Vol 164 (1) ◽  
pp. 10-22
Author(s):  
Thomas Mosimann ◽  
Philipp Herbst

Spatial modeling of forest soil properties in Northwestern Switzerland Forest soils are an important natural resource. However, up to now almost no area-wide forest soil information was available for Switzerland. Since 2006, model-based, high-resolution maps of forest soil properties in the cantons Basel-Landschaft and Basel-Stadt were generated, depicting soil depth, stone content, soil wetness, acidity and water storage capacity. These maps are based on all available point information on soils, and on 95 recently analyzed pedological forest soil profiles. Two different methods were applied in parallel: 1) the development of decision trees based on frequency statistics combined with expertise and 2) the semi-automated Random Forest modeling approach. Highly branched hierarchical decision trees were used to derive soil properties from 24 predictors (relief forms, parent material, vegetation, forest type, location, climate, etc.). This article describes the approaches and portrays the mapped results of soil depth, top soil acidity and water storage capacity. Our project shows that it is basically feasible to predict soil properties with a high spatial resolution, classifying them into 4–5 categories. However, depending on soil type, for 10–30% of the area no predictions are possible, especially because of high soil heterogeneity, inadequate morphographic slope differentiation in the terrain models and the implausibility of predictor information. Soil property maps provide basic information for set up forestry maps for forest development, forest management and risk assessment.


2021 ◽  
Author(s):  
Alois Simon ◽  
Marcus Wilhelmy ◽  
Ralf Klosterhuber ◽  
Clemens Geitner ◽  
Klaus Katzensteiner

<p>Parent material is widely recognised as an important factor for soil formation. Thus, quantitative information on the lithogenetic, geochemical, and physical characteristics of the subsolum geological substrates (SSGS) are essential input parameters for digital soil mapping (DSM). Forming the interface between bedrock – the domain of geologists, and soil – the domain of soil scientists, spatial information on SSGS is however scarce. Recognising these shortcomings, a novel geochemical-physical classification system for subsolum geological substrates has been developed, in order to support DSM at a regional scale. The units of the classification system reflect the properties of the SSGS also considering multilayering structure of quaternary deposits. The basis for the classification are mineral component groups, namely dolomite, calcite, and felsic, mafic, and clay minerals. In order to test the relevance of SSGS for the prediction of spatially continuous physical and chemical soil properties, Generalized Additive Models (GAMs) were applied to the forested area of Tyrol, Austria. The plant-available water storage capacity, as a physical soil property, was predicted with r² = 0.56. The Ellenberg´s mean soil reaction indicator value for vegetation turned out to be a suitable proxy for soil pH value and was predicted with r² = 0.75. Topography and associated morphometric terrain features are formative characteristics of mountain areas and, due to its various effects on redistribution processes as well as on water and energy budget of forest sites, are considered as the most essential soil forming factors. Thus, variables derived from digital terrain models, which are available in high spatial resolution, are assumed to be one of the most important predictors for digital soil mapping. In our study we could show however, that SSGS information is the most relevant predictor for both investigated soil properties. In the plant-available water storage capacity model, the predictor variables related to SSGS account for around 76% of the variance explained. Accordingly, a special focus should be placed on the predictive relevance of parent material and the frequently unlocked potential of quantitative geological substrate information. Thus, the newly developed subsolum geological substrate information could stimulate further developments in digital soil mapping, especially in mountain environments.</p>


2010 ◽  
Vol 58 (4) ◽  
pp. 279-283 ◽  
Author(s):  
Július Šútor ◽  
Vlasta Štekauerová ◽  
Viliam Nagy

Comparison of the monitored and modeled soil water storage of the upper soil layer: the influence of soil properties and groundwater table levelIn the study ofTomlain(1997) a soil water balance model was applied to evaluate the climate change impacts on the soil water storage in the Hurbanovo locality (Southwestern Slovakia), using the climate change scenarios of Slovakia for the years 2010, 2030, and 2075 by the global circulation models CCCM, GISS and GFD3. These calculations did not take into consideration neither the various soil properties, nor the groundwater table influence on soil water content. In this study, their calculated data were compared with those monitored at the same sites. There were found significant differences between resulting soil water storage of the upper 100 cm soil layer, most probably due to cappilary rise from groundwater at sites 2 and 3. It was shown, that the soil properties and groundwater table depth are importat features strongly influencing soil water content of the upper soil layer; thus the application of the soil water balance equation (Eq. (1)), neglecting the above mentioned factors, could lead to the results far from reality.


2021 ◽  
Vol 22 (81) ◽  
pp. 308-328
Author(s):  
José João Lelis Leal Souza ◽  
Anderson Silva Pinto ◽  
Maiara Bezerra Ramos ◽  
Sérgio Faria Lopes

Texture, base saturation, organic carbon content, and water storage availability of soil are drivers of plant physiognomy and composition of communities. Soil properties in ecotone areas are still poorly studied, and the transition between dry, moist, and semideciduous forests is defined only by climate parameters. The objective of this study was to describe the soil properties of a moist-dry forest ecotone in Northeastern Brazil. Seven soil profiles were dug in a pristine semideciduous forest known as “Agreste”. Four more pedons were described to represent soils of dry forests. Morphology, reactivity, texture, organic matter content, and water storage capacity of the soil horizons were determined. The soils of the study area are derived from granites and granitoids, rocks highly resistant to weathering. Soils of dry forests are loam, neutral to alkaline, and hypereutrophic. Soils of semideciduous forest are sandy, acidic, dystrophic, and have up to 65% higher C content. The rocks act as impermeable layers to water, and consequently, most soils develop stagnic properties in semideciduous forests. Soils are dystrophy and have low CEC and loam texture. These properties are attributed to ferrolysis. Umbrisols and Stagnosols with higher water storage capacity than dry forests soils sustain semideciduous forests in Northeastern Brazil.


2021 ◽  
Author(s):  
Oscar Gonzalez Pelayo ◽  
Sergio Prats ◽  
Erik van den Elsen ◽  
Maruxa Malvar ◽  
Coen Ritsema ◽  
...  

2012 ◽  
Vol 92 (4) ◽  
pp. 649-663 ◽  
Author(s):  
Asim Biswas ◽  
Henry W. Chau ◽  
Angela K. Bedard-Haughn ◽  
Bing C. Si

Biswas, A., Chau, H. W., Bedard-Haughn, A. K. and Si, B. C. 2012. Factors controlling soil water storage in the hummocky landscape of the Prairie Pothole Region of North America. Can. J. Soil Sci. 92: 649–663. The Prairie Pothole Region (PPR) in North America is unique hummocky landscape containing hydrologically closed topographic depressions with no permanent inlet or outlet. Knowledge about the controls of soil water distribution in the landscape is important for understanding the hydrology in the PPR. In this study, we investigated the correlation between soil water storage and different controlling factors over time. Time domain reflectometry and neutron probe were used to measure soil water storage up to 1.4 m depth over 4 yr along a 576-m long transect at St. Denis National Wildlife Area, Saskatchewan, Canada, which represent a typical landscape of the PPR. Soil and vegetation properties were measured along the transect, and various terrain indices were calculated from the digital elevation map of the study area. Soil texture (e.g., correlation coefficient, r=−0.57 to −0.73 for sand) provided one of the best explanations for the variations in soil water storage by controlling the entry and transmission of water within soil in the semi-arid climate of study area. Bulk density (r=−0.22 to −0.56), depth of A horizon, (r=0.18 to 0.49), C horizon (r=0.29 to 0.69), and CaCO3 layer (r=0.31 to 0.79) influenced the water transmission through soil and were correlated to soil water storage. Beside soil properties, topographic wetness index (r=0.47 to 0.67), slope (r=−0.41 to −0.56), convergence index (r=−0.29 to −0.60), and flow connectivity (r=0.27 to 0.60) were also correlated to soil water storage. However, multiple linear regressions showed a consistent high contribution from soil properties such as sand, organic carbon, depth of CaCO3 layer, and bulk density in explaining the variability in soil water storage. A substantial contribution from topographic variables such as wetness index, gradient, and solar radiation was also observed. Therefore, unlike other geographic regions, the soil-water storage variations in the PPR are controlled by a combination of soil and terrain properties with dominant control from soil characteristics at the field scale.


Author(s):  
Emilda Emilda

The limitations of waste management in the Cipayung Landfill (TPA) causing a buildup of garbage up to more than 30 meters. This condition has a health impact on people in Cipayung Village. This study aims to analyze the impact of waste management at Cipayung Landfill on public health in Cipayung Village, Depok City. The research is descriptive qualitative. Data obtained by purposive sampling. Data was collected by interviews, observation and documentation. Based on interviews with 30 respondents, it was found that the most common diseases were diarrhea, then other types of stomach ailments, subsequent itching on the skin and coughing. This is presumably because the environmental conditions in the form of unhealthy air and water and clean and healthy living behaviors (PHBS) have not become the habit of the people. The results indicated that there were no respondents who had implemented all of these criteria. In general respondents have implemented  3 criteria, namely maintaining hair hygiene, maintaining skin cleanliness, and maintaining hand hygiene. While maintaining clean water storage is the most often overlooked behavior. To minimize this health impact, improvements in waste management in Cipayung landfill are needed along with continuous socialization and education to develop PHBS habits and the importance of maintaining a clean environment.


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