Grain production and environmental management in China's fertilizer economy

Article Abstract:

Quantitative estimates of China's chemical fertilizer application since 1952 suggest increasing food production through yield improvement as well as the gravity of environmental problems such as groundwater contamination. Results of a grain yield response function confirm that changes in crop yield from 1952-1993 were significantly influenced by fertilizer supply and alternative factors such as improved technology. However, improvement in fertilizer efficiency and enforcement of environmental norms regarding farm chemicals are necessary to reduce the congruous risk of groundwater pollution.

China, Agricultural policy, Agricultural productivity, Fertilizer application, Fertilizers

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A muti-objective approach to integrating agricultural economic and environmental policies

Article Abstract:

A multi-objective decision-making model of agricultural nonpoint source (NPS) pollution reveals the trade-offs between goals and the utility of incorporating environmental objectives. The model is empirically tested out in an eastern Iowa watershed, drained by two major river systems. There is a substantial trade-off between economic and environmental goals, and even between environmental goals.

Decision-making, Models, Decision making, Economic aspects, Soil erosion, Environmental policy

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Spatial and temporal hydrochemical changes in groundwater under the contaminating effects of fertilizers and wastewater

Article Abstract:

Studies on groundwater sources indicate two primary factors in pollutants resulting from agricultural animal slurry storage and management practices, oxidoreduction and concentration-dilution effect. These factors were quantified and geographically plotted for saline and organometallic pollution within the research setting.

Spain, Statistical Data Included, Research, Measurement, Pollution, Water, Underground, Groundwater, Water chemistry, Agricultural wastes

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