摘要
应用生态工程原理,构建互花米草(Spartina alterniflora)生长-收割运输-生物矿质液-降脂胶囊-生物炭-护岸材料产业链,对崇明东滩互花米草进行资源化利用。运用能值分析法对互花米草资源化利用系统的能值效益和经济效益进行综合评价。整个系统具有良好的经济效益,经济净收益为9.64E+09$,经济产投比为27.78,均高于相似的海岸生态经济系统和其他互花米草生态工程。降脂胶囊子系统在所有子系统中具有最大的经济投入和经济产出,经济净收益为9.28E+09$,占整个系统的96%。整个系统的净能值效益为3.98E+22 sej,能值投资率和能值产出率高。社会经济的高度投入增加了系统的环境负荷,系统环境负载率为154.634,可持续发展指数为0.182。总体而言,互花米草资源化利用生态工程系统经济竞争力强,具有长期发展的潜力。
According to the principles of ecoengineering sciences,Spartina alterniflora in Chongming Dongtan can be utilized as a resource by an industrial chain,i.e.plant growth-harvest and transportation-bio-mineral liquid-lipid-lowering capsule-biochar-revetment materials.The emergy synthesis was used to comprehensively evaluate emergy and economic yields of such resource utilization system regarding S.alterniflora.The system has good economic yields,with a net yield of 9.64E+09$and an output-input ratio of 27.78,being significantly greater than other similar coastal economic systems and other ecological engineering regarding S.alterniflora.The lipid-lowering capsule subsystem had the greatest economic input-output ratio among all subsystems,with net economic yield of 9.28E+09$,accounting for 96%of the entire system.The net emergy yield of such entire system was 3.98E+22 sej,indicating a high emergy input-output ratio.The high social and economic inputs increased the environmental load of the system,with an environmental load ratio of 154.634 and an emergy sustainable development index of 0.182.In conclusion,the resource utilization system for S.alterniflora has a strong economic competitiveness and a long-term development potential.
作者
辛悦
邹彩瑜
王磊
刘金娥
李秀珍
XIN Yue;ZOU Cai-yu;WANG Lei;LIU Jin-e;LI Xiu-zhen(School of Environment,Nanjing Normal University,Nanjing 210023,China;Nanjing Institute of Environmental Sciences,Ministry of Ecology and Environment,Nanjing 210042,China;Estuarine and Coastal Research Institute,East China Normal University,Shanghai 200241,China)
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2021年第11期1394-1403,共10页
Journal of Ecology and Rural Environment
基金
国家重点研发计划(2017YFC0506006)
国家自然科学基金(41773077,40973053)
科技部重大研究计划(2014CB953800)
江苏省环保课题(2017021)。
关键词
互花米草
崇明东滩
资源化利用
能值
Spartina alterniflora
Chongming Dongtan
utilization
emergy
