利用基于生命周期评估的能量分析评估再生有机农业耕作和覆盖作物管理实践的可持续性

IF 6.1 1区农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY

Agricultural Systems Pub Date : 2025-06-09 DOI:10.1016/j.agsy.2025.104414

Qiliang Huang , Yingting Gong , Ratih Kemala Dewi , Peiran Li , Xiaolong Wang , Rahmatullah Hashimi , Masakazu Komatsuzaki

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引用次数: 0

摘要

有机农业被广泛认为是实现农业可持续发展的关键战略，其可持续性与所采用的管理实践密切相关。评估不同管理做法下有机种植制度的可持续性，对于确定和促进最可持续的选择至关重要。目的研究耕作和覆盖作物管理对再生有机种植系统效率和可持续性的影响。它旨在确定最合适的耕作和覆盖作物管理组合，以实现高可持续性。方法以有机大豆为研究对象，对三种耕作方式(犁耕（MP）、免耕（NT）和轮作（RT）和两种覆盖作物策略（休耕（FA）和黑麦（RY））进行了评价。采用基于生命周期评价（LCA）的能值评价方法对可持续性进行评价。将土壤有机质和无机养分纳入能值核算。结果与结论：与MP和RT相比，NT系统分别显著减少了44.0%和8.2%的不可再生投入，尽管其产量降低了26.9%和26.7%。然而，与NT-FA相比，NT-RY的产量提高了38.6%。NT-RY还增加了53.5%的土壤有机质和钾，导致系统总产量增加。NT-RY的生产效率最高，单位能量值最低（UEV = 3.32E + 05 sej J−1）。相比MP和RT， NT的能量可持续性指数分别提高4.5%和1.3%，而RY进一步提高了整个系统的ESI。基于elca的能量评价是比较农业管理实践可持续性的有力工具。这些发现表明NT-RY是促进有机农业可持续发展的一种有前途的方法，为努力提高农业可持续性的有机种植者提供了有价值的见解。

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Evaluating the sustainability of tillage and cover crop management practices in regenerative organic agriculture using life cycle assessment-based emergy analysis

Context

Organic farming is widely regarded as a key strategy for achieving sustainable development in agriculture, with its sustainability closely linked to the management practices employed. Assessing the sustainability of organic cropping systems under varying management practices is essential to identify and promote the most sustainable options.

Objective

This study investigated the effects of tillage and cover crop management on the efficiency and sustainability of a regenerative organic cropping system. It aimed to determine the most suitable combination of tillage and cover crop management for achieving high sustainability.

Methods

Three tillage methods—moldboard plowing (MP), no-tillage (NT), and rotary tillage (RT)—and two cover crop strategies—fallow (FA) and rye (RY)—were evaluated in an organic soybean system. Sustainability was assessed using emergy evaluation based on life cycle assessment (LCA) methodology. Soil organic matter and inorganic nutrients were included in the emergy accounting.

Results and conclusions

The NT system significantly reduced nonrenewable inputs by 44.0 % and 8.2 % compared to MP and RT, respectively, though it resulted in a yield reduction of 26.9 % and 26.7 %. However, RY management mitigated this reduction, with NT-RY achieving 38.6 % higher yields compared to NT-FA. NT-RY also increased soil organic matter and potassium by 53.5 %, leading to higher total system output. NT-RY demonstrated the highest production efficiency, with the lowest unit emergy value (UEV = 3.32E + 05 sej J⁻¹). The emergy sustainability index of NT was 4.5 % and 1.3 % higher than MP and RT, respectively, while RY further enhanced ESI across the system.

Significance

LCA-based emergy evaluation is a powerful tool for comparing the sustainability of agricultural management practices. These findings identify NT-RY as a promising approach for advancing sustainable development in organic farming, offering valuable insights for organic growers striving to enhance agricultural sustainability.

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来源期刊

Agricultural Systems 农林科学-农业综合

CiteScore

13.30

自引率

7.60%

发文量

174

审稿时长

30 days

期刊介绍： Agricultural Systems is an international journal that deals with interactions - among the components of agricultural systems, among hierarchical levels of agricultural systems, between agricultural and other land use systems, and between agricultural systems and their natural, social and economic environments. The scope includes the development and application of systems analysis methodologies in the following areas: Systems approaches in the sustainable intensification of agriculture; pathways for sustainable intensification; crop-livestock integration; farm-level resource allocation; quantification of benefits and trade-offs at farm to landscape levels; integrative, participatory and dynamic modelling approaches for qualitative and quantitative assessments of agricultural systems and decision making; The interactions between agricultural and non-agricultural landscapes; the multiple services of agricultural systems; food security and the environment; Global change and adaptation science; transformational adaptations as driven by changes in climate, policy, values and attitudes influencing the design of farming systems; Development and application of farming systems design tools and methods for impact, scenario and case study analysis; managing the complexities of dynamic agricultural systems; innovation systems and multi stakeholder arrangements that support or promote change and (or) inform policy decisions.