高黎贡山羚牛生境选择初步研究

2004年1月~2005年12月,在高黎贡山自然保护区内开展了羚牛指名亚种的生境调查研究,在调查点内对与羚牛生存有关的生境因子(植被型、郁闭度、坡向、坡位、水源、人为干扰、距主要公路距离、距农用地距离)进行了调查统计。在研究中,将这些生态因子分别分成了3个等级进行回归分析,建立羚牛在不同生境中出现概率的预测方程,通过分析后发现,影响高黎贡山羚牛生境选择的主要生态因子是人为干扰和隐蔽条件,其次是距农业用地距离、距主要公路距离和水源,坡度、坡向和植被型对羚牛生境选择的影响不明显。

A Primary Study on Habitat Selection of Gaoligong Mountain Takin

Habitat selection by takin was studied from January 2004 to December 2005 in the Gaoligong Mountain Nature Reserve, Yunnan Province, China. The probability of takin using a specific habitat and the habitat parameters such as vegetation type, shelter condition, aspect, slope position, canopy, water resource, human disturbance, distance from main road and distance from agricultural land were recorded during the field investigation. The information was used for establishing mathematic model to forecast gazelles visiting probabilities to those habitats. These habitat factors were divided into three ranks and analyzed by multiple regressions. Based on the analysis, we concluded:that among the eight ecological factors, the human disturbance and shelter condition were the two main factors that influenced the habitat selection by takin. The secondary factors were distance from agricultural land or the distance from main road, and water resource and the slope, aspect and vegetation had a little influence on the habitat selection by takin.