碳农业在澳大利亚东南部的牧场优化了副效益
Yuan Gao1, Jeffery Connor1, David Summers1
1UniSA Business, The University of South Australia, Adelaide, SA, Australia.
Journal of environmental management
|April 18, 2025
概括
碳农业可以增强生物多样性和土地抵抗力,而不会减少农民的利或碳储存. 在碳农业中优化土地利用释放出显著的共同利益,使气候目标与生态系统服务保持一致.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 生态系统服务生态系统服务
背景情况:
- 全球气候变化缓解工作促进碳农业,以减少温室气体排放.
- 澳大利亚的碳农业计划,如排放量减少基金 (ERF),优先考虑碳储存,往往忽视了副效益.
- 澳大利亚东南部的牧场地区越来越多地采用碳农业.
研究的目的:
- 探索优化碳农业中的土地利用,以最大限度地提高共同利益.
- 评估优先考虑生物多样性和土地退化抵抗力的影响.
- 为了保持财务回报和碳储存的好处与辅助好处.
主要方法:
- 分析了新南威尔士州西部地区的四个土地使用场景:基线,生物多样性优先,土地退化阻力和平衡的共同利益.
- 共同利益场景被限制维持基线财务回报和碳储存,预算增加10%.
- 建模土地退化抵抗力与生物多样性共同利益之间的权衡.
主要成果:
- 生物多样性得分增加了四倍,土地退化阻力得分增加了230%,但没有降低土地所有者的回报.
- 总经济回报率保持相似,碳减排在共同利益场景中增加了10%.
- 在更大的土地面积上实现了碳减排的增加,这是由于在选定的细胞中减排潜力更高.
结论:
- 碳农业可以优化,产生大量的副效益 (生物多样性,土地耐药性),而不会影响经济回报或碳储存.
- 战略性资源配置和考虑多个目标对于有效的碳农业至关重要.
- 研究结果支持将副效益纳入碳市场,使气候行动与更广泛的生态系统服务提供保持一致.
相关概念视频
The Calvin Benson Cycle
4.4K
Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...
4.4K
Adaptations that Reduce Water Loss
25.0K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.0K
The Carbon Cycle
36.6K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
36.6K
Bioremediation
18.1K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.1K
C4 Pathway and CAM
45.0K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...
45.0K


