Enhancing orchard sustainability: productivity gains and nitrogen loss reduction via partial organic substitution in citrus orchards
文献类型： 外文期刊
第一作者： Hao, Rong
作者： Hao, Rong;Wu, Yupeng;Cheng, Weiguo;Shaaban, Muhammad;Yu, Xiaolan;Di, Hongjie
作者机构：
关键词： Ecosystem service framework; Economic valuation; Partial organic substitution; Long-term experiment; Citrus orchard
期刊名称：PLANT AND SOIL （ 影响因子：4.1； 五年影响因子：4.7 ）
ISSN： 0032-079X
年卷期： 2025 年
页码：
收录情况： SCI
摘要： Background and AimsPartial organic substitution effectively reduces chemical fertilizer application in orchards and significantly impacts fruit production, soil fertility, and nutrient losses. Yet few studies have evaluated these effects in a unified manner, limiting the comprehensive understanding of the impact of partial organic substitution on orchard sustainability.MethodsUsing an ecosystem service framework, this study assessed the economic benefits of provisioning (fruit production), regulating (soil carbon sequestration, fertility maintenance, and soil water conservation), and dis-services (N losses) in citrus orchards with a 6-year application of organic/green manure (OM/GM) accompanied by a 30% reduction in chemical nitrogen fertilizer inputs.ResultsCompared to conventional fertilizer application (CK), both OM and GM maintained citrus yield, improved fruit quality, and significantly increased the value of provisioning services by 36.6% and 26.8%, respectively. Cumulative N2O emissions, N losses via leaching and runoff were mitigated by partial organic substitution, and OM and GM decreased the value of ecosystem dis-services by 13.6% and 20.7% compared with CK, respectively. Regulating services constituted a relatively small portion of the net ecosystem services value, while GM showed the greatest promoting effect on it compared with other treatments, due to its remarkable role in increasing soil carbon sequestration. Overall, the net ecosystem services value of CK (93.7 x 103 CNY/ha) was significantly increased to 130.3 x 103 and 122.2 x 103 CNY/ha for OM and GM, respectively.ConclusionPartial organic substitution sustains ecosystem services and curbs dis-services, thereby highlighting its beneficial role in the sustainable development of citrus orchards.
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