Environment Impact Assessment Of Life Cycle Of Hedysari Radix Based On Organic And Inorganic Fertilization Modes

Based on the herbal cultivation situation of Gansu Province, the research has chosenHedysari radix as object, aiming to find solutions for solving the problems of unstable yield,lacking of research on herbal medicines cultivation technologies, extensive productionmanagement and medicine pest control and pesticide residues by the method of Life CycleAssessment (LCA). The research has evaluated life cycle environmental impact of organicfertilization mode(OFM) and inorganic fertilization mode(IFM) using per hectare production1kgHedysari products as the function unit. The main conclusions are as follows:1. The average yield of IFM(3339.9kg·hm-2) is higher than OFM(3232.5kg·hm-2). But thedifference was not obviously, while the quality of OFM is obviously superior to IFM. Under thecondition of OFM, the total ash content of Hedysari radix reached minimum when fertilizationlevel up to18.8kg hm-2; Extract content increased with the increasing of the amount of fertilizer;Under the condition of IFM; The total ash content of Hedysari radix reached minimum whenfertilization level up to37.5kg hm-2; Both HPS contents reached maxium when fertilizationlevel up to28.1.0kg hm-2.2. The single score of life cycle assessment of IFM is2.43Pt, in which the single score ofplanting stage is0.283Pt; While the single score of life cycle assessment of OFM is2.13Pt, inwhich the single score of planting stage is0.0528Pt. The results has showed that environmentload of OFM is lower than IFM.3. In the aspect of environmental impact type, both IFM and OFM has remarkablyenvironmental impact on impact categories of respiratory inorganics and climate change. In theaspect of damage assessment of Human Health, Resources and Ecosystem Equality, Hedysariradix of IFM has significant environment load than OFM.Compared with IFM, reduction of output of OFM was not significantly, which has excellentquality, caused lower environmental impact and more friendly in the aspects of human health,resources and ecosystem equality.