Economic and environmental effects of nutrient budgeting strategies in animal excreta treatment: A case study from rural China

摘要: – The purpose of this paper is to optimize manure allocation through nutrient budgeting strategy meet crop requirements under maximizing economic returns and environmental constraints, then evaluate the effects different strategies in animal excreta treatment. , In study, a holistic integrated “ecological-economic” model developed. It incorporates systems animal-crop production waste treatment developed for pilot pig farm China order simulate several resource use. results reveal management deficiencies cause some serious problems. operations including biogas composting are economically environmentally efficient methods an intensive farming with limited access cropland. constrained phosphorus, however, creates better brings more income from than nitrogen. current standard application cropland which emphasizes on nitrogen should be reconsidered. original work its methodology makes meaningful contribution understanding relations between their effects.