scholarly journals Effectivity and Efficiency of Best Management Practices Based on a Survey and SWAPP Model of the Xiangxi River Basin

Water ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 985
Author(s):  
Ruimin Liu ◽  
Yuexi Miao ◽  
Qingrui Wang ◽  
Lijun Jiao ◽  
Yifan Wang ◽  
...  
Keyword(s):  
River Basin ◽  
Best Management Practices ◽  
Management Practices ◽  
Reduction Rate ◽  
Cost Effective ◽  
Upstream Region ◽  
Factors Affecting ◽  
Best Management ◽  
Xiangxi River ◽  
Piping Systems

A questionnaire survey was conducted among farmers in the Xiangxi River Basin to investigate the local livestock situation and the farmers’ understanding of and attitude towards pollution. The results showed that local farmers lacked environmental awareness and few livestock and poultry pollution treatment measures had been implemented. However, once farmers understood that livestock pollution would greatly influence their lives and interests, they would act to prevent Agricultural non–point source (ANPS) pollution. The farmers’ education level and satisfaction with the environment were the main factors affecting their awareness regarding ANPS pollution. The “Comprehensive Environmental Optimization Tool SWAT–APEX Interface” model (SWAPP) was used to simulate the reduction of ANPS by different best management practices (BMPs) and the construction cost was calculated. The results showed that compound bedding and piping systems and ponds were the most effective and economic measures for reducing ANPS pollution. Spatially, implementing BMPs in the upstream region was better for improving water quality. The nitrate reduction rate in upstream sub–basins reached 90%, which is 30% larger than that in downstream sub–basins with combined bedding and piping systems. Combining the farmers’ awareness of and engagement in livestock pollution with cost–effective BMPs can improve the BMPs’ effectivity and efficiency.

Best management practices for coastal inlets

Shore & Beach ◽  
2020 ◽  
pp. 75-83
Author(s):  
Nicole Elko ◽  
Kimberley McKenna ◽  
Tiffany Roberts Briggs ◽  
Nicholas Brown ◽  
Michael Walther ◽  
...  
Keyword(s):  
Best Management Practices ◽  
Management Practices ◽  
Cost Effective ◽  
Beach Erosion ◽  
Engineering Practice ◽  
Best Management ◽  
Conservation Measures ◽  
Coastal Inlet ◽  
Inlet Conditions ◽  
Coastal Inlets

Coastal inlets separate individual barrier islands or barrier spits and adjacent headlands (Hayes and Fitzgerald 2013). Inlets modify longshore transport and store sediment in flood and ebb shoals leading to dynamic adjacent shorelines. For example, 80% to 85% of the beach erosion in Florida can be attributed to inlets (Dean 1991). In some cases, structured inlets are designed to trap sand in a preferred location to minimize interference with navigation and facilitate its removal through dredging. Sound coastal engineering practice requires that this sand be placed on adjacent eroding beaches (NRC 1995) to protect coastal resources. This paper provides a brief overview of coastal inlet management and identifies Best Management Practices (BMPs) intended to balance human needs for inlet navigation with the natural systems adjacent to tidal inlets. Today’s conservation measures, which are a result of considerable monitoring, numerical modeling, and other science-based methods, demonstrate that BMPs improve management of sand resources and reduce impacts associated with tidal inlet dredging. For some inlet conditions, BMPs include use of inlet sediment sinks as cost-effective and eco-friendly sand sources for beach nourishment projects located close to the inlet. For optimal coastal inlet management, the ASBPA Science and Technology Committee recommends the following BMPs and conservation measures: • Limit frequency and duration of impacts, • Follow environmental windows, • Implement regional sediment management, • Use beach-compatible sand, • Conduct pre-, during-, and post-dredging monitoring, • Modify dredging equipment/practices, and • Design rechargeable, low-impact inlet borrow sites.

Efficiency and feasibility of Best Management Practices to reduce nutrient loads in an agricultural river basin

2022 ◽  
Vol 259 ◽  
pp. 107241
Author(s):  
Giovanni Francesco Ricci ◽  
Ersilia D’Ambrosio ◽  
Anna Maria De Girolamo ◽  
Francesco Gentile
Keyword(s):  
River Basin ◽  
Best Management Practices ◽  
Management Practices ◽  
Nutrient Loads ◽  
Best Management

scholarly journals Evaluation of best management practices for non-point source pollution based on the SWAT model in the Hanjiang River Basin, China

2021 ◽  
Author(s):  
Shu Li ◽  
Jiake Li ◽  
Gairui Hao ◽  
Yajiao Li
Keyword(s):  
Point Source ◽  
River Basin ◽  
Best Management Practices ◽  
Management Practices ◽  
Swat Model ◽  
Forest Land ◽  
Best Management ◽  
Flood Season ◽  
Nps Pollution ◽  
Hanjiang River

Abstract Taking the Hanjiang River basin with Ankang hydrological station as the control section as the study area, the Soil and Water Assessment Tool (SWAT) model is used to identify the spatial and temporal distribution of non-point source (NPS) pollution and determine the critical source areas (CSA). Then we set up 11 best management practices (BMPs) in the CSA and evaluate their environmental and comprehensive benefits. The results show that TN and TP loads in flood season are significantly higher than that in non-flood season. The distribution of loss intensity of TN and TP load has a strong correlation with runoff and sediment erosion intensity, respectively. Among the 8 individual BMPs, the reduction rates of stubble coverage, grassed waterway and returning farmland to forest land are relatively high, and the comprehensive attribute value Z of stubble coverage is the highest. Among the 3 combined BMPs, the reduction rate of ‘stubble coverage + grassed waterway + returning farmland to forest land (>25°)’ is the highest and the Z value is the largest. Overall, the BMPs such as stubble coverage, grassed waterway, and returning farmland to forest land can be adopted alternately to control NPS pollution in the Hanjiang river basin.

scholarly journals Land Application of Biosolids in the USA: A Review

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Qin Lu ◽  
Zhenli L. He ◽  
Peter J. Stoffella
Keyword(s):  
Best Management Practices ◽  
Management Practices ◽  
Cost Effective ◽  
Land Application ◽  
Potential Threat ◽  
Best Management ◽  
Cost Effective Method ◽  
The Usa ◽  
Potential Risks

Land application of biosolids has proven a cost-effective method of waste disposal by beneficially recycling organic matter and nutrients and improving soil quality; however, it may also pose potential threat to the environment and human health. The purpose of this paper is to provide information on recent research progresses and regulation efforts regarding land application of biosolids, including forms and types and nutrient values of biosolids, environmental and health concerns, and related best management practices (BMPs) of biosolids application, with emphasis on its land application in agriculture. More research and regulations are expected to minimize potential risks of biosolids land application, especially its long-term impacts.

scholarly journals Cost-Effective Targeting for Reducing Soil Erosion in a Large Agricultural Watershed

2014 ◽  
Vol 46 (4) ◽  
pp. 509-526 ◽  
Author(s):  
Craig M. Smith ◽  
Jeffrey R. Williams ◽  
Amirpouyan Nejadhashemi ◽  
Sean A. Woznicki ◽  
John C. Leatherman
Keyword(s):  
Best Management Practices ◽  
Management Practices ◽  
Cost Effective ◽  
Agricultural Watershed ◽  
User Friendliness ◽  
Best Management ◽  
Cost Effective Approach ◽  
Cost Efficient ◽  
Sediment Reduction ◽  
The Cost

Erosion of agricultural croplands is a significant contributor of sedimentation to reservoirs. Here, physiographic and economic models for a large agricultural watershed (2377 square miles with 27 subwatersheds) are integrated for the reduction of sedimentation of one Midwestern reservoir. Sediment reduction and the cost-effectiveness of three agricultural best management practices (no-till, filter strip, and permanent vegetation) implementation were considered under three modeling scenarios: random assignment; the globally most cost-effective approach; and a cost-effective targeting approach. This study demonstrates how physiographic and economic data can be harnessed to yield readily comprehendible cost-effective targeting maps. Cost-effective targeting may be preferable to watershed managers for its “user-friendliness” without too great a sacrifice of the globally most cost-efficient solution.

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