四川老君山国家级自然保护区四川山鹧鸪繁殖期的生境利用及其变化研究

基于2006年4月—2018年6月四川老君山国家级自然保护区四川山鹧鸪Arborophila rufipectus固定样点监测数据,对四川山鹧鸪栖息地利用及变化进行了分析,结果显示:(1)不同年间四川山鹧鸪对样点的利用率存在差异,2006—2012年对样点的利用频次呈现下降趋势,2012年后呈现上升趋势;(2)利用样点的平均海拔为1580 m±183 m,年间差异不大,总体保持稳定;(3)对人工林的利用频次最低,2006—2012年对原始林和次生林的利用偏好不明显,2012年之后对原始林的利用率大于次生林;(4)高频利用的生境具有海拔较高、坡度较小、灌丛盖度和竹丛盖度较大、且为原始林的特点。高海拔区域的原始林是保护区需要重点加强保护的区域;加强对低海拔区域人类活动的管控,促进次生林恢复,同时加强对人工林的改造,促进人工林林下灌丛和竹丛生长,将有利于保护区内四川山鹧鸪的栖息与繁衍。

Habitat Use and Change of Arborophila rufipectus During the Breeding Season in the Laojunshan National Nature Reserve,Sichuan

Habitat use and change of Sichuan partridge(Arborophila rufipectus)were analyzed through the plot-based monitoring program from 2006 to 2018 in the Laojunshan National Nature Reserve,Sichuan Province.The results revealed that during the breeding season,(1)There were interannual differences in site utilization.The changes of utilization ratios showed a decreasing trend from 2006 to 2012,but an increasing trend after 2012.(2)The average altitude of sites was 1580 m±183 m,and the altitude distribution was stable.(3)The artificial forest was used at the least frequency.No significant difference between the utilization preferences of primitive forest and secondary forest was detected before 2012,but after that,A.rufipectus used more primitive forest.(4)The commonly used sites by A.rufipectus were characterized as high altitude,gentle slope,great canopy of shrubs and bamboos,and primitive forest.It is recommended that Laojunshan National Natrure Reserve should take some measures to protect the habitat and reproduction of A.rufipectus,including enhancing the protection of primitive forest in high altitude area,controlling human disturbance,accelerating the restoration of secondary forests,and strengthening the transformation of artificial forests in low altitude area to promote the growth of undergrowth shrubs and bamboos.