| 摘要: |
| 【目的】准确分析评价广西石漠化治理衍生典型生态模式的可持续性，对评估石漠化治理成效以及后续优化完善石漠化治理模式具有重要指导作用。【方法】本研究采用能值分析的方法，对广西石漠化综合治理衍生的种草养牛模式(Y1)、种桑养蚕模式(Y2)、毛葡萄模式(Q1)、火龙果黄豆复合模式(Q2)以及金银花模式(Q3)等5种典型生态模式的能值效益指标进行了研究。【结果】结果表明:5种典型生态模式的能值总投入大小表现为Y2>Y1>Q2>Q1>Q3，能值总产出均大于能值总投入，Q3模式能值总投入中占比最高的为环境资源投入，为59.67%，而其它4种模式能值总投入占比最高的则为经济辅助能投入，占比达到了75%以上；2种种养模式(Y1、Y2)的能值投入率和产出率均高于3种种植模式(Q1、Q2、Q3)，而能值自给率则正好相反；5种模式的环境负载率都在[1.0-1.2]之间，对环境压力较小；5种生态模式的可持续性发展指数均大于1，Y2模式的可持续性发展指数最大为5.2275，该模式系统富有活力和发展潜力。【结论】综上所述，广西石漠化综合治理衍生5种典型生态模式均具有不同程度的可持续性，但也存在2种种养结合模式(Y1、Y2)在自然资源的利用上更依赖外部输入、Q1和Q2模式对不可更新资源的依赖性较大以及Q3模式生产效率不高的问题，可因地制宜调整优化这些生态模式，服务支撑广西石漠化综合治理成效。 |
| 关键词: 石漠化综合治理 典型模式 能值分析 可持续发展 广西 |
| DOI： |
| 投稿时间：2024-08-19修订日期：2024-11-23 |
| 基金项目:(42362031)； 广西自然科学基金面上项目(2023GXNSFAA026440)；大学生创新创业项目(S202310603180) |
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| Energy benefit analysis of typical ecological models derived from comprehensive management of rocky desertification in Guangxi |
|
chensiqi, QINXINGMING, HUBAOQING, HUANGLIFANG, GAOCHUNLIAN, QUZIHAN
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| (Nanning Normal University) |
| Abstract: |
| 【Objective】Accurately analyzing and evaluating the sustainability of typical ecological models derived from desertification control in Guangxi plays an important guiding role in evaluating the effectiveness of desertification control and optimizing and improving the desertification control models in the future.【Methods】 This study used the method of energy analysis to investigate the energy efficiency indicators of five typical ecological models derived from the comprehensive management of rocky desertification in Guangxi, including grass-fed model (Y1), mulberry and silkworm breeding model (Y2), hairy grape model (Q1), dragon fruit soybean compound model (Q2), and honeysuckle model (Q3). 【Results】The results showed that the total energy input of the five typical ecological models derived from the control of rocky desertification in Guangxi was Y2>Y1>Q2>Q1>Q3, and the total energy output was greater than the total energy input. The combination of planting and breeding model and the two ecological planting models (Q1, Q2) had the highest proportion of total energy input, which was economic auxiliary energy input, accounting for more than 75%. The honeysuckle mode (Q3) had the highest proportion of total energy input, which was environmental resource input, accounting for 59.67%; The energy input and output rates of two combination of planting and breeding cultivation models (Y1, Y2) are higher than those of three planting modes (Q1, Q2, Q3), while the energy self-sufficiency rate is exactly the opposite; The environmental load rates of the 5 modes are all between [1.0-1.2], with relatively low environmental pressure; The sustainability development index of the five ecological models shows the order of Y2>Y1>Q2>Q1>Q3, with the highest sustainability development index of the mulberry and sericulture model being 5.2275. This model system is full of vitality and development potential. 【Conclusion】 In summary, the five typical ecological models derived from the comprehensive management of rocky desertification in Guangxi have varying degrees of sustainability, but there are also two types of integrated farming models (Y1, Y2) that rely more on external inputs for the utilization of natural resources, the hairy grape model (Q1) and the dragon fruit soybean composite model (Q2) that rely more on non renewable resources, and the low production efficiency of the honeysuckle model (Q3). These ecological models can be adjusted and optimized according to local conditions to serve and support the effectiveness of comprehensive management of rocky desertification in Guangxi. |
| Key words: Comprehensive management of rocky desertification Typical model Energy analysis Sustainable development Guangxi |
