甘肃大熊猫生境质量评价

Habitat Quality Evaluation of Giant Panda(Ailuropoda melanoleuca) in Gansu

本研究以第四次大熊猫(Ailuropoda melanoleuca)调查、甘肃省森林资源二类清查等数据为基础资料,依据国内外有关大熊猫对生境选择利用的研究成果,结合本地本山系大熊猫分布及活动的实际情况,选取竹子分布、植被类型、海拔、坡度、坡向、道路和居民区等评价因子,建立了大熊猫生境质量评价指标体系和准则,借助Arcgis10.2软件,利用栅格赋值和空间叠加原理系统地研究了甘肃大熊猫生境质量。结果表明,甘肃大熊猫生境质量总体较好,适宜和较适宜生境面积总和占到了69.77%;四个局域种群单元中白水江单元适宜生境面积最大,其次为甘南单元;各大熊猫分布县中,文县的大熊猫生境质量最好,其次为舟曲;甘肃大熊猫适宜生境大都处于保护区中,各保护区适宜生境总和为178 771 hm^2,占全省大熊猫适宜生境的88.72%;各保护区中,白水江国家级自然保护区的适宜生境面积最大,其次为插岗梁省级保护区。

Habitat assessment is a study to determine the scope and characteristics of a habitat through the analysis of requirements of a species and suitability for the local environment, which provide an important base for the protection of rare and endangered animals. In this study we used the drop data of Giant Panda（Ailuropoda melanoleuca） collected in Gansu during the Fourth Survey of Second-class Inventory as the indicator of habitat used and the Inventory data of forest resource in Gansu as the habitat availability to evaluate the habitat suitability in Gansu Province. We selected bamboo distribution, vegetation type, altitude, slope, aspect, roads and residential locations as criteria and indicators to establish the evaluating system. Through our systematic research result, we also produced a habitat quality map of Giant Panda in Gansu province with Arcgis10.2. The overall habitat size in Gansu Province was as large as 445 611 hm^2 located in four separated locations named Baishuijiang Unit, Gannan Unit, Jianshan Unit, and Xiqinling Unit. The suitable and marginally suitable habitat in the four Units was account to 45.22%（201 505 hm^2） and 24.55%（109 408 hm^2）, respectively. It indicated a good quality of the habitat in Gansu Province. Among the four habitat units, Baishuijiang Unit owned the largest suitable habitat, while Gannan ranked second. The best habitat located in Wenxian, followed by Zhouqu. The most proportion（88.72%） of suitable habitat located in Nature Reserve and the Baishuijiang National Nature Reserve covered the largest suitable habitat among all the Nature Reserves, and the next was Chagangliang Provincial Nature Reserve.