基于能值改进模型的红米与烤烟作物系统可持续性评价——以贵州省盘州市为例

孙凯, 梁龙, 李仲佰

Sustainability Evaluation of the Red Rice and Flue-Cured Tobacco Crop System Based on the Improved Emergy Model——A Case Study of Panzhou City, Guizhou Province

Sun Kai, Liang Long, Li Zhongbai

表5 2种典型农作系统环境产出变化及能值指标波动

Table 5 Changes of environmental output and emergy indexes fluctuation of the two typical crop systems

项目Item 红米Red rice 烤烟Flue-cured tobacco EYS ELR EESI EYS ELR EESI 增加200% Increase 200% 碳排放Carbon emission – 98.18% ↑ 49.54% ↓ 2.20% ↓ 1.20% ↑ 3.35% ↓ 碳固定Carbon sequestration – 2.14% ↓ 2.18% ↑ 5.11% ↑ – 5.11% ↑ 减少50% Reduction 50% 碳排放Carbon emission – 49.09% ↓ 96.42% ↑ 1.46% ↑ – 1.46% ↑ 碳固定Carbon sequestration – 1.07% ↑ 1.06% ↓ 2.20% ↓ 0.60% ↑ 2.78% ↓