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西双版纳自然保护区中华穿山甲栖息地特征调查研究

Investigation on habitat characteristics of Chinese pangolins in Xishuangbanna National Nature Reserve

  • 摘要: 2023年3-12月,采用样线法对西双版纳国家级自然保护区中华穿山甲栖息环境特征进行了调查研究。结果显示:调查到43个分布点,发现了25处中华穿山甲的洞穴。洞口径大小一般为:长径15.60± 2.81 cm (n=25),短径13.30± 2.92 cm (n=25),洞穴选择坡度为30°~45°、坡向为阳坡和半阴半阳坡,海拔在800~1,600 m的地方,主要分布在常绿阔叶林、沟谷雨林、次生林、山地雨林、荒地和保护区周边的人工橡胶林中。在各类生境中蚂蚁堆使用率依次为季风常绿阔叶林17.39%、沟谷雨林6.9%、次生林8.7%、山地雨林6.98%、荒地2.78%、人工橡胶林3.03%。多样性指数由高到低依次为季风常绿阔叶林 > 次生林 > 山地雨林 > 沟谷雨林 > 橡胶林 > 荒地。

     

    Abstract: From March to December 2023, a survey was conducted using the line transect method to study the habitat characteristics of Chinese pangolin (Manis pentadactyla) in the Xishuangbanna National Nature Reserve. Results showed that 43 occurrences were recorded, and 25 burrows of Chinese pangolin were identified. The burrow entrance dimensions were generalized as: major axis 15.60±2.81 cm (n=25), minor axis 13.30±2.92 cm (n=25). The burrow sites were typically located on slopes of approximately 30°-45°, with sunny or semi-shaded aspects, at elevations ranging from 800 to 1600 m. These burrows were mainly distributed in evergreen broad-leaved forests, valley rainforests, secondary forests, montane rainforests, abandoned-farmland, and rubber plantations around the reserve. In these habitats, the usage rates of ant mounds were as follows: monsoon evergreen broad-leaved forest (17.39%), valley rainforest (6.9%), secondary forest (8.7%), montane rainforest (6.98%), abandoned-farmland (2.78%), and rubber plantations (3.03%). The diversity index, from highest to lowest, was ranked as follows: monsoon evergreen broad-leaved forest > secondary forest > montane rainforest > valley rainforest > rubber plantation > abandoned-farmland.

     

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