Discussion on the evaluation method of comprehensive benefits of eco-agriculture

An evaluation system of comprehensive benefits of eco-agriculture has been established using the theorem of system engineering combined with statistics and analytical hierarchy process.Comprehensive benefits of eco-agriculture are divided into three sub-benefits,which are economic benefit,ecological and environmental benefit and social benefit.Every sub-benefit is divided into several indexes,which can be quantified directly.Weight coefficient reflects the contributing degrees of the indexes.Values of sub-benefits and comprehensive benefits are obtained through adding up all of the weight values of sub-benefits.