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soilproperties, etc ; catenas; data quality; databases; soil map; soil profiles; Southern Africa; Show all 7 Subjects
Abstract:
... Earth-systems modelling of the critical zone often require soil maps that represent in-field conditions. Some developing regions, such as southern Africa, do not have detailed soil data for all areas and are often reliant on data from global soil maps and data sets. This raises the question of global and regional soil map and soil data accuracy at local levels. Although previous studies have indic ...
soilproperties, etc ; databases; forest soils; model validation; river flow; soil water; Norway; Show all 7 Subjects
Abstract:
... Lack of national soil property maps limits the studies of soil moisture (SM) dynamics in Norway. One alternative is to apply the global soil data as input for macro-scale hydrological modelling, but the quality of these data is still unknown. The objectives of this study are 1) to evaluate two recent global soil databases (Wise30sec and SoilGrids) in comparison with data from local soil profiles; ...
soilproperties, etc ; data collection; landscape position; prediction; regression analysis; soil formation; topographic slope; Kansas; Netherlands; Spain; Show all 10 Subjects
Abstract:
... We present a set of new geomorphometric variables that express landscape position relative to breaklines in hillslopes, and test whether these variables are of value in explaining soil property variation in three study sites in the United States, the Netherlands, and Spain. Underlying this work is the recognition that slope breaks, such as cliff lines, lynchets, and large slumped blocks, are assoc ...
soilproperties, etc ; algorithms; digital elevation models; landscapes; prediction; Show all 5 Subjects
Abstract:
... Scientists have long been developing better and more efficient methods to improve the prediction of the spatial distribution of soils and their presence in the landscape, but research in this field is still needed. This study introduces an algorithm to derive terrain attributes at multiple scales and automatically calibrate the optimal scale for each predictor based on the robust and powerful Rand ...
soilproperties, etc ; case studies; organic carbon; statistics; topsoil; Show all 5 Subjects
Abstract:
... For many decades, soil scientists have produced spatial estimates of soil properties using statistical and non-statistical mapping models. Commonly in soil mapping studies the map quality is assessed through pairwise comparison of observed and predicted values of a soil property, from which statistical indices summarizing the quality of the entire map are computed. Often these indices are based on ...
soilproperties, etc ; climate; common lands; infiltration rate; soil water; Show all 5 Subjects
Abstract:
... Soil moisture is a key state variable in land surface processes. Since field measurements of soil moisture are generally sparse and remote sensing is limited in terms of observation depth, land surface model simulations are usually used to continuously obtain soil moisture data in time and space. Therefore, it is crucial to evaluate the performance of models that simulate soil moisture under vario ...
soilproperties, etc ; drying; lasers; measurement; research; sieves; sieving; soil aggregates; tillage; Show all 9 Subjects
Abstract:
... Aggregate size distribution of soil is an important parameter to describe soil properties. For many years, the size of soil aggregates has been measured using the dry sieving method. During sieving, particularly less-stable aggregates may have broken down. However, apart from the sieve method, there was no method enabling direct measurement of aggregates on a dry basis. The modification of the mea ...
soilproperties, etc ; expert opinion; georeferencing; gravel; hydrology; landscapes; prediction; probability; soil classification; Australia; Show all 10 Subjects
Abstract:
... The spatial distribution of soil coarse fragments (CF) is important for a variety of agricultural and environmental applications because it directly impacts soil processes including hydrology and nutrient cycling. However, there is often insufficient measured data to reliably model and map CF using a digital soil mapping approach. By targeting CF layer occurrence rather than CF as a continuous soi ...
soilproperties, etc ; calcium; organic carbon; oxalates; pH; perfluorohexane sulfonic acid; perfluorooctanoic acid; sorption; spectroscopy; Show all 9 Subjects
Abstract:
... This study investigated the potential aging and plant bioaccumulation of three perfluoroalkyl acids (PFAAs), perfluorosulphonic acid (PFOS), perfluorooctanoic acid (PFOA) and perfluorohexanesulphonic acid (PFHxS) in 20 soils over a six-month period. Sorption coefficients (Log Kd) ranged from 0.13–1.28 for PFHxS, 0.17–1.06 for PFOA and 0.98–2.03 for PFOS, respectively, and bioaccumulation factors ( ...
soilproperties, etc ; aboveground biomass; grasslands; nitrogen; phosphorus; soil ecology; soil organic carbon; topsoil; China; Show all 9 Subjects
Abstract:
... Grazing management can alter soil properties and microbial communities that are critical to maintaining grasslands' long-term productivity and function, but information relevant to such influences operating on the Qinghai-Tibetan Plateau (QTP) of China is scarce. The present study was undertaken to examine the impact of different grazing management approaches [e.g., seasonal grazing (SG), continuo ...
soilproperties, etc ; hydrologic cycle; lakes; neural networks; prediction; soil water; weather; wet season; California; Show all 9 Subjects
Abstract:
... Accurate prediction of soil moisture is important yet challenging in various disciplines, such as agricultural systems, hydrology studies, and ecosystems studies. However, many data-driven models are being used to simulate and predict soil moisture at only a single depth. To predict soil moisture at various soil depths with depths of 100, 200, 500, and 1000 mm from the surface, based on the weathe ...
... HighlightsA model was developed to express soil-metal sliding resistance in terms of normal stress and sliding path length.Soil-metal sliding resistance data, different from those used to develop the model, were acceptably simulated.The model is expected to be useful in the design and development of soil-engaging equipment.Abstract. Most previous soil-material sliding resistance studies have focus ...
soilproperties, etc ; geostatistics; national parks; organic carbon; peat; potassium; radiometry; statistical models; surveys; water content; Show all 10 Subjects
Abstract:
... Remote sensors provide high resolution data over large spatial extents that can potentially be used to map soil properties such as the concentration of organic carbon or its moisture content. The sensors rarely measure the property of interest directly but instead measure a related property. There is a need to make ground measurements of the property of interest to calibrate a model or relationshi ...
soilproperties, etc ; beneficial microorganisms; biochemical pathways; fungi; nutrients; organic compounds; plant hormones; planting; soil bacteria; Show all 9 Subjects
Abstract:
... Phytohormones are a group of structurally diverse, low-molecular organic substances that regulate all processes of plant life. It is well known that many microorganisms interacting with plants possess the ability to synthesize phytohormones. However, beneficial and pathogenic microorganisms can destroy and transform phytohormones in plants, affect their concentrations, and utilize them as nutrient ...
soilproperties, etc ; bulk density; microbial carbon; pig manure; soil organic carbon; soil quality; systematic review; Show all 7 Subjects
Abstract:
... A comprehensive review of research data on the effects of swine manure on soil health properties that is applicable to agricultural producers is lacking. The objectives of this review were (a) to synthesize literature describing effects of swine manure on soil properties that affect “soil health” and (b) to identify knowledge gaps and research needs to further our understanding of this topic. We r ...
soilproperties, etc ; Bacillariophyceae; Chlorophyceae; Cyanobacteria; Rhizobiales; Rhodobacterales; carbon; chlorophyll; desertification; microbial communities; photosynthesis; salinity; China; Show all 13 Subjects
Abstract:
... Photosynthetic microorganisms are widely distributed in the soil and play an important role in plant-free soil crusts. However, the distribution and environmental drivers of phototrophic microbial communities in physical soil crusts, where the abundance of cyanobacteria is low, are scarcely understood. Here, we performed high-throughput sequencing of pufM and 18S rRNA genes in soil crusts at diffe ...
soilproperties, etc ; Pteris vittata; climate; climate change; geographical distribution; habitats; hyperaccumulators; models; phytoremediation; temperature; China; Show all 11 Subjects
Abstract:
... Understanding the distribution of hyperaccumulators helps to implement more efficient phytoremediation strategies of contaminated sites, however, limited information is available. Here, we investigated the geographical distribution of the first-known arsenic-hyperaccumulator Pteris vittata in China and the key factors under two climate change scenarios (SSP 1-2.6 and SSP 5-8.5) at two time points ...
soilproperties, etc ; Larix gmelinii; Siberia; altitude; chronosequences; equations; forests; landscapes; mineral soils; models; soil fertility; trees; Show all 12 Subjects
Abstract:
... PURPOSE: Soil properties play key roles in ecosystem recovery at the landscape scale and are regulated by a complex interplay between abiotic and biotic factors. Our study aimed to identify the potential drivers of post-fire changes in mineral soil in the larch forest of southeastern Siberia. METHODS: We established a 28-year fire chronosequence with 80 sites over a small region of the Greater Khi ...
soilproperties, etc ; Schistosoma mansoni; climate change; humans; models; monitoring; people; public health; risk; schistosomiasis; temperature; Ethiopia; Show all 12 Subjects
Abstract:
... In Ethiopia, human schistosomiasis is caused by two species of schistosome, Schistosoma mansoni and S. haematobium, with the former being dominant in the country, causing infections of more than 5 million people and more than 37 million at risk of infection. What is more, new transmission foci for S. mansoni have been reported over the past years in the country, raising concerns over the potential ...
soilproperties, etc ; data collection; databases; forest restoration; latitude; longitude; old-growth forests; soil depth; tropical forests; Show all 9 Subjects
Abstract:
... Restoring forest ecosystems has become a global priority. Yet, soil dynamics are still poorly assessed among restoration studies and there is a lack of knowledge on how soil is affected by forest restoration process. Here, we compile information on soil dynamics in forest restoration based on soil physical, chemical, and biological attributes in temperate and tropical forest regions. It encompasse ...