现代农业研究2026，Vol.32Issue(3)：87-94,8.
基于Ecopath的黔东南稻—渔共养生态系统结构与功能研究
Structure and Function of a Rice Fish Co-culture Ecosystem in Qiandongnan Based on Ecopath
摘要
Abstract
To quantitatively evaluate the impacts of the rice fish co-culture model on ecosystem structure and energy flow characteristics,a field experiment was conducted in 2025 at the Guizhou University of Finance and Economics Science and Technology Courtyard in Shidong Town,Taijiang County,Qiandongnan Prefecture,Guizhou Province.A rice fish co-culture system and a rice monoculture system(control)were established.The Ecopath with Ecosim(EWE)model was applied to construct trophic pathway models for both systems,and comparative analyses were conducted on trophic structure,food web characteristics,and energy transfer efficiency.The results showed that the highest trophic level of the rice fish co-culture system was 3.09,lower than that of the control system(3.90).The food web consist-ed of both grazing and detrital chains,including 19 functional groups.Compared with the control system,additional fish functional groups such as grass carp,common carp,silver carp,and bighead carp were incorporated,leading to in-creased food web complexity.Energy transfer efficiencies between trophic levels(II IV)in the rice fish system were significantly higher than those in the control system(12.28%,7.11%,and 6.91%vs.10.17%,6.38%,and 2.78%,re-spectively).The total system energy transfer efficiency reached 2.8%,exceeding that of the control(1.9%).The connectance index(0.21)and omnivory index(0.27)were higher than those of the control system(0.16).Finn's Cycling Index was also higher(0.27 vs.0.21),while the mean path length was shorter(3.43 vs.4.23).Overall,the rice fish co-culture system demonstrated higher energy utilization efficiency and structural complexity.However,it remains in a developmental stage,and further optimization of fish community structure is required to en-hance system stability.This study provides a theoretical basis for evaluating the ecological benefits and sustainable de-velopment of rice fish co-culture systems.关键词
稻渔共养/Ecopath with Ecosim/营养结构/能量流/生态农业/科技小院Key words
rice fish co-culture/Ecopath with Ecosim/trophic structure/energy flow/ecological agriculture/science and technology courtyard分类
农业科技引用本文复制引用
龙炳均,梁龙,张凤玲..基于Ecopath的黔东南稻—渔共养生态系统结构与功能研究[J].现代农业研究,2026,32(3):87-94,8.基金项目
贵州省科技计划项目"贵州省特色农业产业碳达峰峰值和碳中和潜力研究"(项目编号:黔科合-ZK[2023]一般032) （项目编号:黔科合-ZK[2023]一般032）
贵州财经大学大学生创新创业训练计划项目"旧州新事-新质生产力引领下的数字小院助力农村新业态高质量发展"(项目编号:2024106710157S). （项目编号:2024106710157S）
