keyword
MENU ▼
Read by QxMD icon Read
search

watershed management

keyword
https://www.readbyqxmd.com/read/28921402/an-improved-risk-explicit-interval-linear-programming-model-for-pollution-load-allocation-for-watershed-management
#1
Bisheng Xia, Xin Qian, Hong Yao
Although the risk-explicit interval linear programming (REILP) model has solved the problem of having interval solutions, it has an equity problem, which can lead to unbalanced allocation between different decision variables. Therefore, an improved REILP model is proposed. This model adds an equity objective function and three constraint conditions to overcome this equity problem. In this case, pollution reduction is in proportion to pollutant load, which supports balanced development between different regional economies...
September 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28917172/reconstruction-of-atmospheric-trace-metals-pollution-in-southwest-china-using-sediments-from-a-large-and-deep-alpine-lake-historical-trends-sources-and-sediment-focusing
#2
Qi Lin, Enfeng Liu, Enlou Zhang, Bibhash Nath, Ji Shen, Hezhong Yuan, Rong Wang
Atmospheric pollution, one of the leading environmental problems in South and East Asia, and its impact on the terrestrial environmental quality remain poorly understood particularly in alpine areas where both historical and present-day mining and smelting operations might leave an imprint. Here, we reconstructed atmospheric trace metals pollution during the past century using core sediments from a large and deep alpine lake in Southwest China. The implication of in lake and/or in watershed sediment focusing in pollution quantification is discussed by analyzing 15 sediment cores...
September 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28913681/calculation-of-intercepted-runoff-depth-based-on-stormwater-quality-and-environmental-capacity-of-receiving-waters-for-initial-stormwater-pollution-management
#3
Hai-Qin Peng, Yan Liu, Xue-Long Gao, Hong-Wu Wang, Yi Chen, Hui-Yi Cai
While point source pollutions have gradually been controlled in recent years, the non-point source pollution problem has become increasingly prominent. The receiving waters are frequently polluted by the initial stormwater from the separate stormwater system and the wastewater from sewage pipes through stormwater pipes. Consequently, calculating the intercepted runoff depth has become a problem that must be resolved immediately for initial stormwater pollution management. The accurate calculation of intercepted runoff depth provides a solid foundation for selecting the appropriate size of intercepting facilities in drainage and interception projects...
September 14, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28877196/predicting-active-layer-soil-thickness-using-topographic-variables-at-a-small-watershed-scale
#4
Aidi Li, Xing Tan, Wei Wu, Hongbin Liu, Jie Zhu
Knowledge about the spatial distribution of active-layer (AL) soil thickness is indispensable for ecological modeling, precision agriculture, and land resource management. However, it is difficult to obtain the details on AL soil thickness by using conventional soil survey method. In this research, the objective is to investigate the possibility and accuracy of mapping the spatial distribution of AL soil thickness through random forest (RF) model by using terrain variables at a small watershed scale. A total of 1113 soil samples collected from the slope fields were randomly divided into calibration (770 soil samples) and validation (343 soil samples) sets...
2017: PloS One
https://www.readbyqxmd.com/read/28856397/midwestern-us-farmers-perceive-crop-advisers-as-conduits-of-information-on-agricultural-conservation-practices
#5
Francis R Eanes, Ajay S Singh, Brian R Bulla, Pranay Ranjan, Linda S Prokopy, Mary Fales, Benjamin Wickerham, Patrick J Doran
Nonpoint source pollution from agricultural land uses continues to pose one of the most significant threats to water quality in the US, with measurable impacts across local, regional, and national scales. The impact and the influence of targeted conservation efforts are directly related to the degree to which farmers are familiar with and trust the entities providing the information and/or outreach. Recent research suggests that farmers consistently rank independent and retail-affiliated crop advisers as among the most trusted and influential sources for agronomic information, but little is understood about whether farmers are willing to receive advice from crop advisers on the use of practices that conserve soil and water, and, if so, whether crop advisers will be perceived as influential...
August 30, 2017: Environmental Management
https://www.readbyqxmd.com/read/28854482/applying-high-frequency-surrogate-measurements-and-a-wavelet-ann-model-to-provide-early-warnings-of-rapid-surface-water-quality-anomalies
#6
Bin Shi, Peng Wang, Jiping Jiang, Rentao Liu
It is critical for surface water management systems to provide early warnings of abrupt, large variations in water quality, which likely indicate the occurrence of spill incidents. In this study, a combined approach integrating a wavelet artificial neural network (wavelet-ANN) model and high-frequency surrogate measurements is proposed as a method of water quality anomaly detection and warning provision. High-frequency time series of major water quality indexes (TN, TP, COD, etc.) were produced via a regression-based surrogate model...
August 26, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28852879/using-fluorescence-lymphangiography-to-define-the-ileocolic-mesentery-proof-of-concept-for-the-watershed-area-using-real-time-imaging
#7
D S Keller, H M Joshi, M Rodriguez-Justo, D Walsh, J C Coffey, M Chand
Recent advances in mesenteric science have demonstrated that the mesentery is a continuous structure with a 'watershed' area at the mesenteric apex between the right colon and terminal ileum, where lymphatic flow can proceed either proximally or distally. With this new understanding of the anatomy, functional features are emerging, which can have an impact on surgical management. Fluorescence lymphangiography or lymphoscintigraphy with indocyanine green allows real-time visualization of lymphatic channels, which highlights sentinel lymph nodes and may facilitate identification of the ideal margins for mesenteric lymphadenectomy during bowel resection for colon cancer...
August 29, 2017: Techniques in Coloproctology
https://www.readbyqxmd.com/read/28847104/multi-year-prediction-of-estrogenicity-in-municipal-wastewater-effluents
#8
Maricor J Arlos, Wayne J Parker, José R Bicudo, Pam Law, Patricija Marjan, Susan A Andrews, Mark R Servos
In this study, the estrogenicity of two major wastewater treatment plant (WWTP) effluents located in the central reaches of the Grand River watershed in southern Ontario was estimated using population demographics, excretion rates, and treatment plant-specific removals. Due to the lack of data on estrogen concentrations from direct measurements at WWTPs, the treatment efficiencies through the plants were estimated using the information obtained from an effects-directed analysis. The results show that this approach could effectively estimate the estrogenicity of WWTP effluents, both before and after major infrastructure upgrades were made at the Kitchener WWTP...
August 30, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28844040/rhino-orbito-cerebral-mucormycosis-recovery-against-the-odds
#9
Saman Zafar, Aparna Prabhu
A 22-year-old woman presented with diabetic ketoacidosis, acute right eye blindness and complete ophthalmoplegia. Despite early suspicion and treatment for rhino-orbito-cerebral mucormycosis, her extensive spread of infection led to right internal carotid artery occlusion and cavernous sinus thrombosis, right-sided cerebral watershed infarctions and large abscesses in her right cerebellum, temporal lobe and pons. She underwent surgical removal of her right eye, paranasal sinuses, maxilla and palate, suboccipital craniectomy and shunting for hydrocephalus...
August 26, 2017: Practical Neurology
https://www.readbyqxmd.com/read/28841517/surface-water-retention-systems-for-cattail-production-as-a-biofuel
#10
Pamela Berry, Fuad Yassin, Richard Grosshans, Karl-Erich Lindenschmidt
Surface water retention systems act to reduce nutrient pollution by collecting excess nutrients within a watershed via runoff. Harvesting aquatic biomass, such as the invasive cattail, from retention systems removes nutrients absorbed by the plant from the ecosystem permanently. Harvested biomass can be used as a renewable energy source in place of fossil fuels, offsetting carbon emissions. The purpose of this research was to simulate cattail harvest from surface water retention systems to determine their ability to provide suitable growing conditions with annual fluctuations in water availability...
August 22, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28821727/grace-satellite-observations-reveal-the-severity-of-recent-water-over-consumption-in-the-united-states
#11
Kurt C Solander, John T Reager, Yoshihide Wada, James S Famiglietti, Richard S Middleton
Changes in the climate and population growth will critically impact the future supply and demand of water, leading to large uncertainties for sustainable resource management. In the absence of on-the-ground measurements to provide spatially continuous, high-resolution information on water supplies, satellite observations can provide essential insight. Here, we develop a technique using observations from the Gravity Recovery and Climate Experiment (GRACE) satellite to evaluate the sustainability of surface water and groundwater use over the continental United States...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28806705/multiparametric-monitoring-of-microbial-faecal-pollution-reveals-the-dominance-of-human-contamination-along-the-whole-danube-river
#12
A K T Kirschner, G H Reischer, S Jakwerth, D Savio, S Ixenmaier, E Toth, R Sommer, R L Mach, R Linke, A Eiler, S Kolarevic, A H Farnleitner
The microbial faecal pollution of rivers has wide-ranging impacts on a variety of human activities that rely on appropriate river water quality. Thus, detailed knowledge of the extent and origin of microbial faecal pollution is crucial for watershed management activities to maintain safe water use. In this study, the microbial faecal pollution levels were monitored by standard faecal indicator bacteria (SFIB) along a 2580 km stretch of the Danube, the world's most international river, as well as the Danube's most important tributaries...
July 22, 2017: Water Research
https://www.readbyqxmd.com/read/28803153/comparison-of-sediment-and-nutrient-export-and-runoff-characteristics-from-watersheds-with-centralized-versus-distributed-stormwater-management
#13
Kristina G Hopkins, J V Loperfido, Laura S Craig, Gregory B Noe, Dianna M Hogan
Stormwater control measures (SCMs) are used to retain stormwater and pollutants. SCMs have traditionally been installed in a centralized manner using detention to mitigate peak flows. Recently, distributed SCM networks that treat runoff near the source have been increasingly utilized. The aim of this study was to evaluate differences among watersheds that vary in SCM arrangement by assessing differences in baseflow nutrient (NOx-N and PO4(-)) concentrations and fluxes, stormflow export of suspended sediments and particulate phosphorus (PP), and runoff characteristics...
August 9, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28800692/does-the-developmental-stage-and-composition-of-riparian-forest-stand-affect-ecosystem-functioning-in-streams
#14
Sahadevan Seena, Francisco Carvalho, Fernanda Cássio, Cláudia Pascoal
A common watershed restoration practice to improve water quality and stream ecosystem functions and services is replanting riparian corridors with plant species that may differ from those of natural communities. This restoration practice may have consequences on the aquatic ecosystem processes because organisms obtain energy from leaf litter inputs of the riparian zones. Leaf litter decomposition in streams is a vital ecosystem-level process, which depends on the activity of microorganisms and invertebrates...
December 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28799926/daily-runoff-prediction-using-the-linear-and-non-linear-models
#15
Alireza Sharifi, Yagob Dinpashoh, Rasoul Mirabbasi
Runoff prediction, as a nonlinear and complex process, is essential for designing canals, water management and planning, flood control and predicting soil erosion. There are a number of techniques for runoff prediction based on the hydro-meteorological and geomorphological variables. In recent years, several soft computing techniques have been developed to predict runoff. There are some challenging issues in runoff modeling including the selection of appropriate inputs and determination of the optimum length of training and testing data sets...
August 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28763654/evaluating-the-risk-of-phosphorus-loss-with-a-distributed-watershed-model-featuring-zero-order-mobilization-and-first-order-delivery
#16
Sisi Li, Liang Zhang, Hongbin Liu, Hugo A Loáiciga, Limei Zhai, Yanhua Zhuang, Qiuliang Lei, Wanli Hu, Wenchao Li, Qi Feng, Yun Du
Many semi-distributed models that simulate pollutants' losses from watersheds do not handle well detailed spatially distributed and temporal data with which to identify accurate and cost-effective strategies for controlling pollutants issuing from non-point sources. Such models commonly overlook the flow pathways of pollutants across the landscape. This work aims at closing such knowledge gap by developing a Spatially and Temporally Distributed Empirical model for Phosphorus Management (STEM-P) that simulates the daily phosphorus loss from source areas to receiving waters on a spatially-distributed grid-cell basis...
December 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28756675/trees-and-streets-as-drivers-of-urban-stormwater-nutrient-pollution
#17
Benjamin D Janke, Jacques C Finlay, Sarah E Hobbie
Expansion of tree cover is a major management goal in cities because of the substantial benefits provided to people, and potentially to water quality through reduction of stormwater volume by interception. However, few studies have addressed the full range of potential impacts of trees on urban runoff, which includes deposition of nutrient-rich leaf litter onto streets connected to storm drains. We analyzed the influence of trees on stormwater nitrogen and phosphorus export across 19 urban watersheds in Minneapolis-St...
August 11, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28756220/linking-terrestrial-phosphorus-inputs-to-riverine-export-across-the-united-states
#18
Genevieve S Metson, Jiajia Lin, John A Harrison, Jana E Compton
Humans have greatly accelerated phosphorus (P) flows from land to aquatic ecosystems, causing eutrophication, harmful algal blooms, and hypoxia. A variety of statistical and mechanistic models have been used to explore the relationship between P management on land and P losses to waterways, but our ability to predict P losses from watersheds often relies on small scale catchment studies, where detailed measurements can be made, or global scale models that that are often too coarse-scaled to be used directly in the management decision-making process...
July 17, 2017: Water Research
https://www.readbyqxmd.com/read/28738202/predicting-carbon-benefits-from-climate-smart-agriculture-high-resolution-carbon-mapping-and-uncertainty-assessment-in-el-salvador
#19
Sean Patrick Kearney, Nicholas C Coops, Kai M A Chan, Steven J Fonte, Pablo Siles, Sean M Smukler
Agroforestry management in smallholder agriculture can provide climate change mitigation and adaptation benefits and has been promoted as 'climate-smart agriculture' (CSA), yet has generally been left out of international and voluntary carbon (C) mitigation agreements. A key reason for this omission is the cost and uncertainty of monitoring C at the farm scale in heterogeneous smallholder landscapes. A largely overlooked alternative is to monitor C at more aggregated scales and develop C contracts with groups of land owners, community organizations or C aggregators working across entire landscapes (e...
July 21, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28732403/ecosystem-service-trade-offs-and-their-influencing-factors-a-case-study-in-the-loess-plateau-of-china
#20
Qiang Feng, Wenwu Zhao, Bojie Fu, Jingyi Ding, Shuai Wang
Soil erosion control (SEC), carbon sequestration (CAS), and soil moisture (SMO) strongly interact in the semi-arid Loess Plateau. Since SMO has supportive effects on SEC and CAS, it can be considered as ecosystem service (ES), and there is an immediate need to coordinate the relationships among these ecosystem services (ESs) to promote the sustainability of vegetation recovery. In this study, we quantified the ESs, ES trade-offs, and the environmental factors in 151 sample plots in the Ansai watershed, and we used a redundancy analysis (RDA) to clarify the effects of environmental factors on these ESs and their trade-offs...
December 31, 2017: Science of the Total Environment
keyword
keyword
104126
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"