The sustainable land use farm models include estimates of soils losses and biomass produced . Major production , environmental and social impacts resulting from actual land uses ( production , soil erosion , biomass losses ...

This higher level of erosion is the result of using more of the SIW soil than in the eight soil type model in the first ... leads to an increased production of cassava and palm heart causing the higher value of the objective function .

abandonment of the areas or a switch to other use which could be less productive , the need for often establishing ... column 1992 Pg . -7- b From farm production models ( excess erosion x area = C d losses excess soil Excess biomass ...

Floods in the last 8 Deforestation , land overuse , reduction of river Agricultural losses caused by floods ... soil erosion , improper pesticide multiple water productive use , increase disperse source pollution rivers , caused by and ...

The research subject deals with the interactions between soil erosion and farmer's risk , achieved by the above presented linear ... with an objective of maximizing net returns subject to various levels of soil loss and risk . The model ...

organisms , weathering , manure and urine ( from the grazing stock ) , and all outputs , namely the attainable amount that may be removed by grazing and losses by erosion , leaching , volatilisation , denitrification / nitrification ...

When a mid - latitude forest is cleared 75 % of the nutrients remain in the soil for crop production once a year . ... extensive areas with low cation exchange capacities are subject to chemical erosion due to leaching .

When a mid - latitude forest is cleared 75 % of the nutrients remain in the soil for crop production once a year . ... extensive areas with low cation exchange capacities are subject to chemical erosion due to leaching .

However , a full quantification of damage to the environment due to nutrient losses or biocide emission is currently not ... Options not related to current indicators Sustainability aspects currently included in the various models ...

Including environmental costs , organic coffee in Costa Rica produced a profit of * 16,000 / ha while conventional coffee gave a net loss of * 49,000 / ha ( 1992-93 , when coffee prices were at their lowest ) . • Soil erosion in ...