农业碳排放效率与中国的粮食安全之间的合协调:时空演变和预测
Xixian Zheng1, Wenmei Liao1,2,3
1School of Economics and Management, Jiangxi Agricultural University, Nanchang, China.
PloS one
|July 2, 2025
概括
中国中国中国中国.
科学领域:
- 农业经济学,环境科学,可持续发展
背景情况:
- 气候变化和粮食不安全是影响可持续发展目标 (SDGs) 的关键全球挑战.
- 提高农业碳排放效率 (ACEE) 和确保粮食安全 (FS) 对可持续发展至关重要.
- 了解ACEE和FS之间的协调对于有效的政策制定至关重要.
研究的目的:
- 从2007年到2021年,评估中国各省的ACEE和FS之间的协调.
- 分析它们的空间特征和协调的动态演变.
- 预测这种协调的未来趋势.
主要方法:
- 超级松模型 (SBM) 用于ACEE评估.
- 通过与理想解决方案相似的顺序偏好的入权重技术 (EW-TOPSIS) 用于FS评估.
- 合协调度模型 (CCDM),全球空间自相对应 (GA),局部空间关联指标 (LISA) 和马尔科夫链分析用于协调评估和动态.
- 未来预测的组合预测模型.
主要成果:
- 无论是ACEE和FS都显示出积极的趋势,但FS的改善落后于ACEE.
- 协调已经从"几乎没有协调"演变为"主要协调",区域差异很大.
- 空间分析表明,在协调层面上有显著的集群和空间溢出效应.
- 马尔科夫链分析揭示了强大的系统惯性,保持当前协调状态的可能性很高.
- 预测显示,到2030年,协调力度将增加,但区域不平衡仍在持续.
结论:
- 需要有针对性的,特定于区域的战略来解决协调停滞和衰退的问题.
- 加强资源分配和技术支持对于公平的进步至关重要.
- 需要考虑长期和空间维度的全面政策框架,以平衡ACEE和FS.
- 持续监测和适应性管理对于实现可持续发展目标至关重要.
更多相关视频
07:32Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.
Published on: June 4, 2021
5.3K
08:09Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
Published on: September 12, 2017
11.9K
相关概念视频
What is Climate?
19.0K
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
19.0K
Adaptations that Reduce Water Loss
26.4K
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.
26.4K
Key Elements for Plant Nutrition
21.8K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
21.8K
Global Climate Change
24.8K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
24.8K
The Calvin Benson Cycle
4.8K
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...
4.8K
Microorganisms in Agriculture and Food industry
410
Microorganisms play a crucial role in agriculture and the food industry, contributing to soil fertility, crop protection, and food production. Their functions range from nitrogen fixation and biopesticide production to fermentation and food preservation, making them indispensable to sustainable farming and food safety.Role in AgricultureNitrogen-fixing bacteria, such as Rhizobium (symbiotic) and Azotobacter (free-living), convert atmospheric nitrogen into ammonia through biological nitrogen...
410
