| 引用本文： |
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陈进勋,邬玖久,沈邱筱潇,申婉青,邹成成,王忠斌.基于MaxEnt模型的林芝市越冬赤麻鸭生境适宜性评价[J].广西科学院学报,2025,41(2):213-221. [点击复制]
- CHEN Jinxun,WU Jiujiu,SHEN Qiuxiaoxiao,SHEN Wanqing,ZOU Chengcheng,WANG Zhongbin.Habitat Suitability Evaluation of Wintering Tadorna ferruginea in Nyingchi Based on MaxEnt Model[J].Journal of Guangxi Academy of Sciences,2025,41(2):213-221. [点击复制]
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| 摘要: |
| 掌握物种的生境需求及其适宜生境的空间分布格局对于物种的保护工作至关重要。本研究通过实地考察和网络检索相结合的方式，收集赤麻鸭(Tadorna ferruginea)在林芝市越冬的46个有效分布点，利用最大熵(Maximum Entropy，MaxEnt)模型预实验和ENMTools工具筛选12个主要环境变量后，运用MaxEnt模型对其适宜生境进行预测分析。结果表明：MaxEnt模型的受试者工作特征(Receiver Operating Characteristic，ROC)曲线下面积(Area Under Curve，AUC)值高达0.950，说明该模型具有较高的精度，并且预测结果具有较高的可信度。影响林芝市越冬赤麻鸭选择生境的主要环境变量包括距道路距离(贡献率56.4%)、距水源距离(贡献率9.3%)、最干月份降水量(贡献率8.9%)、土地利用类型(贡献率8.6%)、坡度(贡献率6.2%)以及最冷月份最低温度(贡献率6.1%)。赤麻鸭的适宜生境通常位于距离道路较近、气候条件温和且河岸两侧植被覆盖度较高的水源附近。从适宜生境分布图来看，赤麻鸭的高适宜生境面积仅占总研究区域的1.25%，说明林芝市目前存在较大面积的生态保护空白区域，建议采取措施保护并改善赤麻鸭的生境质量。 |
| 关键词: 赤麻鸭 最大熵模型 生境 适宜性评价 |
| DOI：10.13657/j.cnki.gxkxyxb.20250722.007 |
| 投稿时间：2024-10-05修订日期：2024-11-08 |
| 基金项目:2023年中央财政林业草原生态保护恢复资金国家级自然保护区补助项目(S202310372050)和2023年全国越冬水鸟林芝地区同步监测项目(2023XZLZ406)资助。 |
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| Habitat Suitability Evaluation of Wintering Tadorna ferruginea in Nyingchi Based on MaxEnt Model |
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CHEN Jinxun, WU Jiujiu, SHEN Qiuxiaoxiao, SHEN Wanqing, ZOU Chengcheng, WANG Zhongbin
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| (Resource & Environment College, Xizang Agriculture and Animal Husbandry University, Nyingchi, Xizang, 860000, China) |
| Abstract: |
| Mastering the habitat needs of species and the spatial distribution pattern of suitable habitats is crucial for the protection of species. In this study,46 effective distribution points of Tadorna ferruginea overwintering in Nyingchi were collected through field investigation and network retrieval. After using the Maximum Entropy (MaxEnt) model pre-experiment and ENMTools tool to screen 12 major environmental variables,the MaxEnt model was used to predict and analyze its suitable habitat. The results showed that the Area Under Curve (AUC) value of the Receiver Operating Characteristic (ROC) in the MaxEnt model was as high as 0.950,which indicated that the model had high accuracy and the prediction results had high credibility. The main environmental factors affecting the overwintering habitat selection of T.ferruginea in Nyingchi included distance from roads (contribution rate 56.4%),distance from water sources (contribution rate 9.3%),precipitation in the driest month (contribution rate 8.9%),land use type (contribution rate 8.6%),slope (contribution rate 6.2%),and minimum temperature in the coldest month (contribution rate 6.1%). The suitable habitats for T.ferruginea are usually located near the water source with close distance to the road,mild climatic conditions and high vegetation coverage on both sides of the river bank. From the distribution map of suitable habitats,the high suitable habitat area of T.ferruginea only accounts for 1.25% of the total study area,which indicates that there is a large area of ecological protection blank area in Nyingchi,and it is recommended to take measures to protect and improve the habitat quality of T.ferruginea. |
| Key words: Tadorna ferruginea maximum entropy model habitat suitability evaluation |
