科研动态Research News | 刘洪杰教授团队在国际期刊Animals发表最新动物地理学研究成果

我院刘洪杰教授团队在国际期刊Animals发表最新动物地理学研究成果

Prof. LIU Hongjie 's team have published a paper in the Animals, an international flagship journal in animal science

作者简介

刘洪杰，华南师范大学地理科学学院教授。主要从事动物地理学、环境生态学等领域的教学科研工作。

近日，华南师范大学地理科学学院刘洪杰教授团队在Animals发表题为"Identifying migration routes of wild Asian elephants in China based on ecological networks constructed by circuit theory model"（基于电路理论模型构建生态网络分析中国野生亚洲象迁移路径）的研究论文。（全文链接：https://doi.org/10.3390/ani13162618）

前几年的云南西双版纳野象群“一路象北”事件，曾引起世界公众舆论的高度关注。刘洪杰教授在“动物地理学”课程中专门对此现象进行了讲解和讨论，并给学生们了提出利用地理信息技术对云南野象进行扩散路径预测和拦截点选址的研究。其时论文第一作者本院2020级本科生蒋馨同学正在修读动物地理学课程，对此选题充满兴趣、积极响应。此后历经多轮对影响因子和参数的反复讨论和分析，并经蒋志云副教授对英文稿件的撰写进行指导和修改，最终取得了阶段性的研究成果。

该研究将中国云南南部仍然存在亚洲象的省级和国家级自然保护区以及其他适合亚洲象生长的替代栖息地视为生态斑块，选取地形及地面状态等数据构建亚洲象的生态阻力面，利用电路理论模型和遥感数据构建生态网络，识别生态廊道和生态夹点，由此确定野生亚洲象可能的迁徙路线。主要结果如下：（1）研究区坡陡、海拔高的密林、耕地、建设用地具有较大的迁徙阻力，而远离城市且平缓起伏的灌木丛、竹林、草地等具有较小的迁徙阻力。（2）研究区存在3个生态廊道群，主要由灌丛和草地组成。本研究确定的生态廊道是中国野生亚洲象最有可能的迁徙路线，模拟电流密度较高的地区反映亚洲象经过的概率较高。（3）根据分析，研究区生态夹点面积约有602 km2，林地和草地占生态夹点总面积的89.2%。夹点所在区域，亚洲象通过概率较高，且空间狭窄。该研究可为当前野生亚洲象物种保护提供建议和解决方案，缓解人象冲突，促进人与自然和谐共处，为生物保护和生物保护区规划提供参考。

Animals（ISSN 2076-2615）是一本有影响力的国际跨学科学术期刊。发表各类涉及动物研究领域的原创性研究文章、评论、通讯等。5年影响因子为 3.2。

Abstract

Humans overlap with Asian elephants, resulting in frequent costly human–elephant conflicts, which disturb and even threaten local residents. In this study, we treat provincial and national nature reserves where Asian elephants still exist and other alternative habitats suitable for Asian elephants in southern Yunnan, China, as ecological patches. By using this approach, we can treat the terrain and surface state factors that hinder the migration of Asian elephants as a form of ecological resistance surface. We can then use a circuit theory model and remote sensing data to construct an ecological network, which allows us to identify ecological corridors and ecological pinch points. Herein, the possible migration routes of wild Asian elephants were identified. The main results are as follows: (1) In the study area, dense forests with steep slopes and high altitudes, cultivated land, and building land have greater migration resistance, while the gently undulating shrubs, bamboo forests, and grasslands far away from the city have less migration resistance. (2) There are three ecological corridor groups in the study area, mainly composed of shrub and grassland. The ecological corridors identified in this paper are the most likely migration routes of wild Asian elephants in China, and areas with higher simulated current densities reflect a higher probability of Asian elephants passing through. (3) According to the analysis, the ecological pinch points in the study area are 602 km2 in total, and woodland and grassland account for 89.2% of the total ecological pinch area. The areas where the pinch points are located have a high probability of Asian elephants passing through and a narrow space. Our findings can provide suggestions and solutions for the current conservation of wild Asian elephant species, alleviate human–elephant conflicts, promote the harmonious coexistence between humans and nature, and provide reference for biological protection and biological reserve planning.

Keywords: circuit theory model; ecological corridor; ecological pinch point; conservation; Asian elephant (Elephas maximus)

Journal Information

Animals is an international and interdisciplinary scholarly journal. It publishes original research articles, reviews, communications, and short notes that are relevant to any field of study that involves animals, including zoology, ethnozoology, animal science, animal ethics and animal welfare. Impact factor of the Animals is 3.2 for the five-year IF.

文字编辑 | 蒋  馨

初审 | 刘洪杰 袁亚娟

复审 | 陶  伟

终审 | 刘云刚