
Evaluation of Irrigation Water Source Suitability Based on Group Decision Entropy Optimization-CRITIC Algorithm
DING Si-yu, CHEN Jing, HE Yi-fan, ZHONG Li-en, LI Jin-gang, WANG Shou, YAN Ai-zhong, ZHONG Ming-ke
Evaluation of Irrigation Water Source Suitability Based on Group Decision Entropy Optimization-CRITIC Algorithm
There is a lack of targeted evaluation methods for the suitability of irrigation water sources in arid and semi-arid areas. Existing evaluation methods tend to have limited applicability and rely on single indicators, which restricts their usefulness across different water sources. Therefore, this paper takes arid and semi-arid areas as the research object to explore the evaluation methods that can be applied to the suitability of different irrigation water sources. The suitability evaluation index system of irrigation water source was constructed by comprehensively considering factors such as the available supply of irrigation water source, the timeliness of irrigation water supply, the consumption of water lifting energy, and the irrigation water temperature. The group decision entropy optimization method algorithm was introduced to determine the combined weight of the evaluation index. Taking three available irrigation water sources in Pingluo County of Ningxia as a typical case, the TOPSIS method was used to comprehensively evaluate the irrigation suitability of three different water sources from April to September, combined with the constructed evaluation index system and weight determination method. The closeness degree values of Yellow River water and drainage in Pingluo County from April to September were all greater than 0.31, suggesting their suitability for irrigation. The close degree value of groundwater in April is only 0.241 2, which is not suitable for irrigation. Still, the closeness degree value of groundwater from May to August exceeds 0.31, which is suitable for irrigation, and is consistent with the actual situation of Yinbei Irrigation District in Ningxia. The evaluation index system constructed in this paper and the introduced combination weight determination method (group decision entropy optimization-CRITIC algorithm) are suitable for the suitability evaluation of irrigation water sources in arid and semi-arid areas.
suitability of irrigation water source / Yinbei irrigation district / group decision-making / entropy optimization / combination weight / index system {{custom_keyword}} /
Tab.1 Critical criteria for suitability of different irrigation water sources表1 不同灌溉水源的适宜性评判标准 |
贴近度 | 0.00~0.30 | 0.31~0.60 | 0.61~0.80 | 0.81~1.00 |
---|---|---|---|---|
适宜程度 | 不适宜 | 较适宜 | 适宜 | 很适宜 |
Tab.2 Subjective weights of categories and indicators表2 各类别及指标的主观权重 |
类别 | 指标 | AIOWA | Cj | 类别 | 指标 | AIOWA | Cj |
---|---|---|---|---|---|---|---|
水文 | 地下水埋深(C1) | 70.826 | 0.031 89 | 灌溉水质 | 矿化度(C15) | 87.355 | 0.039 34 |
气象 | 有效降雨量(C2) | 76.052 | 0.034 25 | 灌溉水pH(C16) | 87.261 | 0.039 30 | |
潜在蒸发蒸腾量(C3) | 82.095 | 0.036 97 | 钠吸附比(C17) | 81.061 | 0.036 50 | ||
土壤特性 | 土壤盐分含量(C4) | 81.636 | 0.036 76 | 氯化物浓度(C18) | 83.144 | 0.037 44 | |
土壤碱化度(C5) | 77.429 | 0.034 87 | 化学需氧量(C19) | 80.761 | 0.036 37 | ||
土壤饱和含水率(C6) | 83.367 | 0.037 54 | 灌溉水温(C20) | 80.127 | 0.036 08 | ||
土壤有机质含量(C7) | 74.632 | 0.033 61 | 悬浮物含量(C21) | 87.193 | 0.039 27 | ||
作物特性 | 作物耐盐阈值(C8) | 82.367 | 0.037 09 | 氟化物含量(C22) | 85.735 | 0.038 61 | |
作物类型(C9) | 88.504 | 0.039 86 | 挥发酚含量(C23) | 84.500 | 0.038 05 | ||
灌排措施 | 灌溉措施(C10) | 85.353 | 0.038 44 | 镉元素含量(C24) | 86.776 | 0.039 08 | |
排水措施(C11) | 80.570 | 0.036 28 | 铬元素含量(C25) | 79.044 | 0.035 60 | ||
灌溉水资源 | 水源可供应量(C12) | 87.420 | 0.039 37 | 铅元素含量(C26) | 88.244 | 0.039 74 | |
水源供应及时程度(C13) | 78.627 | 0.035 41 | 砷元素含量(C27) | 81.967 | 0.036 91 | ||
提水能耗费(C14) | 78.555 | 0.035 38 |
Tab.3 The closeness degree and order of different irrigation water sources from April to September表3 不同灌溉水源4-9月的贴近程度值 |
月份 | 黄河水 | 地下水 | 农田排水 | |||
---|---|---|---|---|---|---|
| 排序 | | 排序 | | 排序 | |
4 | 0.383 1 | 6 | 0.241 2 | 6 | 0.584 3 | 1 |
5 | 0.554 0 | 3 | 0.710 0 | 1 | 0.327 9 | 6 |
6 | 0.637 7 | 1 | 0.337 2 | 5 | 0.508 2 | 2 |
7 | 0.532 3 | 4 | 0.485 8 | 2 | 0.503 7 | 3 |
8 | 0.583 7 | 2 | 0.376 3 | 3 | 0.431 9 | 4 |
9 | 0.427 2 | 5 | 0.344 0 | 4 | 0.380 8 | 5 |
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