【摘要】 绿孔雀是国家I级保护动物,人类活动导致的生境破碎化正在威胁其生存。本文在实地调查的基础上,根据云南省恐龙河自然保护区内观测到的15个绿孔雀出现点和8个环境变量数据,用MaxEnt模型评价绿孔雀的生境适宜性,使用最小费用模型设计生境廊道。结果表明:MaxEnt模型的评价结果达到优秀水平(训练集AUC=0.951);影响绿孔雀适宜生境的主要环境变量是河漫滩距离(贡献率为59.2%)和海拔(贡献率为30.1%);最适宜和较适宜生境呈条带状分布在恐龙河两侧,较为破碎,面积分别为44.47和76.91 km~2,合计占总面积的15%;在海拔500～1000 m的河谷地区设计了28条1000 m宽的绿孔雀生境廊道,廊道总长度232.08 km,面积241.97 km~2,为绿孔雀保护提供了科学依据和参考。更多还原

【Abstract】 Green Peafowl( Pavo muticus) is inscribed in the Chinese First-Class National Protected Animals list for its rarity and preciousness. Anthropogenic habitat fragmentation threatens its survival. Based on 15 occurrence records of Green Peafowl and eight environmental parameters in Konglong River nature reserve of Yunnan Province in southwestern China,we evaluated the habitat suitability using MaxEnt Model and designed habitat corridors using Minimum Cost Model. The results showed that the area under ROC curve( AUC) of MaxEnt Model was 0.951,indicating an excellent assessment result of the model. The distance to river bank and the elevation were dominant environmental variables for the suitability of Green Peafowl habitats,with a contribution rate of 59.2% and 30.1%,respectively. The habitats with very high( 44.47 km~2) and high( 76.91 km~2) suitability were elongated and fragmented on both sides of the Konglong River,which together accounted for 15% of the total area of the nature reserve. Furthermore,28 habitat corridors with a width of 1000 m were designed in the river valley between the elevation of 500-1000 m a.s.l.,of which the total length is 232.08 km and the area is 241.97 km~2. Our results provided a scientific basis for the protection of Green Peafowl in China.更多还原