摘要
Plastic greenhouse vegetable cultivation is rapidly expanding in China and elsewhere worldwide. In order to comprehensively understand the impacts of plastic greenhouse vegetable cultivation on agricultural ecosystem services and dis-services, we developed an assessment framework for the net ecosystem services and used China as a case study. Our results showed that, compared to conventional vegetable cultivation, plastic greenhouse vegetable cultivation has higher fresh vegetable production, greater CO2 fixation (3.61 t CO2 ha(-1) yr(-1)), better soil retention (23.1 t ha(-1) yr(-1)), and requires less irrigation (2132 m(3) water ha(-1) yr(-1)), maintains similar soil fertility, but also has higher NO3- accumulation and N2O emissions. In 2004. plastic greenhouse vegetable cultivation in China provided an overall net economic benefit of 67,956 yuan yr(-1) (8.28 yuan = 1 USD in 2004), where 68,240 yuan ha(-1) yr(-1) represented ecosystem services and 284 yuan ha(-1) yr(-1) for dis-services. The transition from conventional vegetable cultivation to plastic greenhouse vegetable cultivation resulted in a net economic benefit of 24,248 yuan ha(-1) yr(-1). A cost-benefit analysis suggests that plastic greenhouse vegetable cultivation in China has the potential to optimize social benefits in addition to increasing annual economic income to farmers directly.