A meta-analysis of ecological functions and economic benefits of co-culture models in paddy fields

verfasst von

Haiyang Yu, Xuechen Zhang, Wanyu Shen, Huaiying Yao, Xiangtian Meng, Jieyi Zeng, Guangbin Zhang, Kazem Zamanien

Abstract

The co-culture of rice and poultry/aquatic animals has become a popular strategy to ensure the critical ecological functions and economic benefits of this ecosystem in recent years. Yet, quantitative synthetic effects of co-culture models on ecological functions and economic benefits in paddy fields are poorly understood. This study conducted a meta-analysis of 4707 observations from 224 published papers on the outcomes of co-culture models in paddy fields. On aggregate, co-culture models significantly reduced CH₄ emissions by 14.8 % as compared with rice monoculture, but did not affect rice yields, N₂O emissions, and greenhouse gas intensity (GHGI). However, significant differences in rice yields, CH₄ emissions, GHGI, and economic benefits were observed among various co-culture models and rice-growing regions. Particularly, the co-culture models in East Asia significantly increased rice yields (+2.2 %), reduced CH₄ emissions (–22.1 %), and GHGI (–9.4 %). Importantly, co-culture models improved rice grain quality. Furthermore, co-culture models increased soil fertility (7.8–16.2 %), nutrients content in paddy water (26.2–87.0 %), and net ecological and economic benefits (31.7–71.1 %), while decreasing diseases, pests, and weeds (37.0–84.6 %) in paddy fields. Additionally, we suggest that the production of poultry or aquatic animals that alters input and output would increase net income, and it is necessary to develop co-culture models in paddy fields according to regional differences in the agricultural environment. Therefore, our study provides a reference for maximizing ecological and economic benefits of suitable co-culture models in rice-planted areas.

Organisationseinheit(en)

Institut für Bodenkunde

Externe Organisation(en)

Chinese Academy of Sciences (CAS)
Haixi Institutes of Chinese Academy of Sciences and People's Government of Beilun District
Northwest Agriculture and Forestry University
Wuhan Institute of Technology
Graduate University of Chinese Academy of Sciences
Nanjing University of Information Science and Technology

Typ

Artikel

Journal

Agriculture, Ecosystems and Environment

Band

341

ISSN

0167-8809

Publikationsdatum

01.01.2023

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Ökologie, Nutztierwissenschaften und Zoologie, Agronomie und Nutzpflanzenwissenschaften

Ziele für nachhaltige Entwicklung

SDG 2 – Kein Hunger

Elektronische Version(en)

https://doi.org/10.1016/j.agee.2022.108195 (Zugang: Geschlossen)