Results 61 to 70 of about 653,772 (212)

Optimizing Nitrogen Fertilizer Application for Synergistic Enhancement of Economic and Ecological Benefits in Rice–Crab Co-Culture Systems

open access: yesAgronomy
The rice–crab co-culture (RC) system is a multidimensional integrated farming model with significant potential for balancing ecological and economic benefits in paddy fields.
Yang Xu   +8 more
doaj   +1 more source

Characteristics and Influencing Factors of Phosphorus Loss in Watersheds during Typical Rainfall Events [PDF]

open access: yes长江科学院院报
[Objective] Surface runoff and soil erosion during rainfall events are the main drivers of phosphorus (P) loss in watersheds, particularly during the rainy season when a few key heavy rainfall events can dominate annual phosphorus load outputs.
LIU Xiao-rong, DU Xin-zhong, LIU Xin-ru, HAN Yu-guo, AN Miao-ying, LEI Qiu-liang, LIU Hong-bin
doaj   +1 more source

Control of non-point source pollution by a natural wetland

open access: yesWater Science and Technology, 2001
Wetland creation and restoration is a reliable and efficient technology for the remediation of contaminated water. Knowledge from the natural wetland systems would be necessary to enhance the operational efficiency of constructed wetlands. In this study, a mountainous wetland located in McDowell County, North Carolina, USA was selected to demonstrate ...
C M, Kao, M J, Wu
openaire   +2 more sources

Reduction Assessment of Agricultural Non-Point Source Pollutant Loading [PDF]

open access: yes, 2018
Abstract. NPS (Non-point source) pollution has become a key impact element to watershed environment at present. With the development of technology, application of models to control NPS pollution has become a very common practice for resource management and Pollutant reduction control in the watershed scale of China.
Fu, YiCheng   +5 more
openaire   +2 more sources

FARM-LEVEL RESPONSE TO AGRICULTURAL EFFLUENT CONTROL STRATEGIES: THE CASE OF THE WILLAMETTE VALLEY [PDF]

open access: yes
This article examines economic incentives and other mechanisms to offset non-point source pollution from agriculture. A biophysical simulator to estimate technical relationships is linked to linear programming models for representative farms in the ...
Adams, Richard M.   +2 more
core   +1 more source

Modeling of non-point source nitrogen pollution from 1979 to 2008 in Jiaodong Peninsula, China [PDF]

open access: yes, 2014
Efforts to reduce land-based non-point source (NPS) pollutions from watersheds to coastal waters are ongoing all around the world. In this study, annual yield of NPS nitrogen (NPS-N) pollution in Jiaodong Peninsula, China from 1979 to 2008 was estimated.
Chang, Yuanyong   +5 more
core   +1 more source

Valuing a Spatially Variable Environmental Resource: Reducing Non-point Source Pollution in Green Bay, WI [PDF]

open access: yes
This article investigates the value of reducing non-point source pollution in Green Bay, WI. Using stated preference methods, we find the lower bound on the benefits of reducing runoff enough to universally increase water clarity by four feet is greater ...
Bishop, Richard C.   +2 more
core  

Probability vs Severity of Punishment : the case of the non-point source pollution [PDF]

open access: yes, 2014
Treball Final de Grau en Economia. Codi: EC1049. Curs: 2013/2014In a world of scarce resources it is a main concern for a regulator how to deal with crime in an optimal way.
Martí Rubio, Borja
core  

The different effects of molybdate on Hg(II) bio-methylation in aerobic and anaerobic bacteria

open access: yesFrontiers in Microbiology
In nature, methylmercury (MeHg) is primarily generated through microbial metabolism, and the ability of bacteria to methylate Hg(II) depends on both bacterial properties and environmental factors. It is widely known that, as a metabolic analog, molybdate
Lanjing Wang   +11 more
doaj   +1 more source

How Humans Change the Atmosphere [PDF]

open access: yes
This exercise is designed to introduce students to the idea that human activities can alter the chemistry or gaseous composition of the atmosphere, resulting in a variety of impacts on human health and the environment.
Chris Fox
core  

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