Study on the Spatial Difference of Environmental Effect of Rice-crayfish Rotation System in Hubei Province Based on Emergy Analysis
Based on field research data from five counties (cities) in Hubei Province,including Jianli County,Gong'an County,Qianjiang Cit-y,Honghu City and Shishou City,an energy flow model was constructed.Using energy analysis methods,the energy input-output situation and related indicators of the rice-crayfish rotation system in the five counties (cities) were calculated,revealing the spatial differences in the envi-ronmental effect of the rice-crayfish rotation system.The results showed that overall,the rice-crayfish rotation system in the five counties (cit-ies) had not caused significant pressure on the environment,demonstrating good ecological benefits.However,there were obvious spatial differ-ences within the region.Southeast regions such as Jianli and Honghu relied more on natural resources and had a higher sustainable development index; Northwest regions such as Qianjiang exhibited high input and output,with relatively high environmental load rates.
万方数据
维普
