基于动态模拟的有机农业实践对农业生态系统稳定性和生物多样性的影响研究
Effects of Organic Farming Practices on Agricultural Ecosystem Stability and Biodiversity Based on Dynamic Simulation

本研究构建了包含植物、害虫、蝙蝠等物种的食物链模型，并通过微分方程模型分析了除草剂移除和物种引入对农业生态系统的影响。结果表明，与传统农业模式相对比，在停止使用除草剂之后，植物数量在第30个月开始逐渐趋于稳定，至120个月时，植物数量已达到约500万株。与此同时，害虫数量维持在大约5万只，而蝙蝠数量则上升至约1200只。在自然调控机制的作用下，整个生态系统逐步恢复了平衡。在以上研究的基础上，进一步引入小型哺乳动物和捕食者后，生态系统结构和动态发生显著变化，生物多样性增加。在减少化学品使用的同时，从而更加显著提升了生态系统的稳定性和生物多样性。最后可以得出，减少化学品使用对生态系统具有正面影响，为有机农业的可持续管理提供了理论支持。
In this study, we constructed a food chain model including plants, pests, bats and other species, and analyzed the effects of herbicide removal and species introduction on agro-ecosystems by differential equation model. The results showed that compared with the traditional agricultural model, the number of plants began to gradually stabilize at the 30^th month after stopping the use of herbicides, and reached about 5 million plants at the 120^th month. At the same time, the pest population has remained stable at about 50,000, while the bat population has risen to about 1200. Under the action of natural regulation mechanism, the whole ecosystem has gradually restored its balance. On the basis of the above studies, the further introduction of small mammals and predators resulted in significant changes in ecosystem structure and dynamics and increased biodiversity. The use of chemicals is reduced, thereby significantly improving ecosystem stability and biodiversity. Finally, it can be concluded that reducing chemical use has a positive impact on ecosystems, providing theoretical support for sustainable management of organic agriculture.