您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Evaluation of the trophic structure and energy flow of a rice-crayfish integrated farming ecosystem based on the Ecopath model

文献类型： 外文期刊

作者： Dong, Shipeng 1 ; Gao, Yunfang 3 ; Gao, Yaping 4 ; He, Mingdi 1 ; Liu, Feng 3 ; Yan, Fajun 3 ; Wang, Fang 1 ;

作者机构： 1.Ocean Univ China, Key Lab Mariculture, Minist Educ, Qingdao 266003, Peoples R China

2.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Fisheries Sci & Food Prod Proces, 1 Wenhai Rd, Qingdao 266237, Peoples R China

3.Shandong Freshwater Fisheries Res Inst, Jinan 250000, Peoples R China

4.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Minist Agr, Key Lab Sustainable Dev Marine Fisheries, Qingdao 266071, Peoples R China

关键词： Ecopath model; Energy flow; Trophic structure; Rice-crayfish

期刊名称：AQUACULTURE （ 影响因子：3.224； 五年影响因子：3.591 ）

ISSN： 0044-8486

年卷期： 2021 年 539 卷

页码：

收录情况： SCI

摘要： Rice field integrated farming combining aquaculture and rice cultivation effectively stabilizes food security and maintains sustainable agricultural development. To analyze the trophic structure and energy flow of rice field integrated farming ecosystem, the food web model of a rice-crayfish ecosystem was developed based on the Ecopath model approach. The functional group with the highest ecotrophic efficiency (EE) value was crayfish Procambarus clarkii (0.97), and those with the lowest EE values were chironomid larvae and benthic bacteria (0.02) in the rice-crayfish systems. The effective trophic level of P. clarkii was 2.20 with consumer consumption share of 19%. The transfer efficiency of trophic level II was 3.90% in the rice-crayfish system. The total system throughput was 19,262 g/m2/90 days, showing very high scale and activity. The rice-crayfish ecosystem showed high value of Finn?s cycling index (0.266), and low value of connectance index (0.252) and system omnivory index (0.053). Therefore, the food web model structures of the rice-crayfish integrated farming ecosystem in this study was unstable, simple, and linear. The carrying capacity of P. clarkii was 138.85 g/m2. Ecosystem properties such as scale, energy consumption, and stability indicated that this farming model has room for improvement, and rice-crayfish integrated farming should be further optimized to improve energy utilization, stability, and comprehensive benefits based on the different ecosystem properties.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国水产科学研究院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台