摘要: 2007年3月6日4月25日,采用焦点取样和瞬时扫描取样相结合的方法对3只幼龄藏狐(Vulpesferrilata)的昼间行为进行观察记录,并分析其节律及组成。结果表明,休息行为是幼龄藏狐日常活动的主要组成部分,其次为捕食行为和嬉戏行为。幼龄藏狐以晨昏活动为主,主要活动时间集中在8:009:00时和16:0019:00时,其余时间以休息为主。成体藏狐出现后,幼龄藏狐嬉戏行为增加,而休息行为减少,并伴随有奔跑和亲昵行为。

摘要: This study on microhabitat selecti on of Tibetan fox( Vulpes ferrilata )was conducted in July 1999 at Shiqu, Sichuan Province of China.It se t 10 factors in 97 sample spots and collected them every 10 days,the Vande rloeg Scavia′s index was chosen as the discrimination index for the microhabit at select ion of Tibetan fox to analyse the factors. The results shown that fox prefer to select those habitats, in which, the base diameter of shrub is bet ween 50 cm and 100 cm and the height range is between 30 cm and 50 cm.Furthermore, the slope range is between 20 o and 30 o and the relative altitude range is between 100 m and 200 m.Our researches demonstrated that, for Tibetan fox, the main threat comes from human activity.The local people should pay more care on fox and protect the shrubs i n itDK's habitat.

摘要: 通过对四川石渠地区夏季藏狐洞穴生境选择的研究 ,以水源距离、洞口朝向、坡向、坡度、坡位、植被类型及鼠兔和鼠类洞穴等 7项指标为变量 ,运用主成分分析和聚类分析相结合的方法对收集到的 5 4个藏狐洞穴样本进行了分析。主成分分析在 4个主成分下达到 85 %的显著性。在第一主成分中水源距离、坡度和坡位是重要的影响变量 ,在另外 3个主成分中鼠类洞穴数量以及植被类型两变量也非常重要。聚类分析显示 ,5 4个洞穴样本在 3个水平上聚成 5类。藏狐易于选择草甸地带 ,中缓坡和低坡位 ,坡向多为阳坡或半阳坡 ,水源距离小于5 0 0m的地方筑巢 ,其穴口朝向多位于 135°～ 36 0°之间。此外 ,鼠兔和鼠类洞穴在藏狐洞穴样方内的出现 ,但数量变异较大 ,揭示小型哺乳动物和藏狐之间可能存在着复杂的相互关系。通过对四川石渠地区夏季藏狐洞穴生境选择的研究 ,以水源距离、洞口朝向、坡向、坡度、坡位、植被类型及鼠兔和鼠类洞穴等 7项指标为变量 ,运用主成分分析和聚类分析相结合的方法对收集到的 5 4个藏狐洞穴样本进行了分析。主成分分析在 4个主成分下达到 85 %的显著性。在第一主成分中水源距离、坡度和坡位是重要的影响变量 ,在另外 3个主成分中鼠类洞穴数量以及植被类型两变量也非常重要。聚类分析显示 ,5 4

摘要: 最小凸多边形法(MCP)和固定核空间法(FKE)是目前最常用的家域计算方法,但受空间自相关性、偏远位点等问题的影响,两种方法均存在明显的局限性。本文根据2006年和2007年在四川省石渠县和青海省都兰县的7只藏狐352个活动位点数据,分析MCP和FKE家域估计的效果和存在的问题。结果显示:(1)利用概率百分比≤95%时,MCP计算结果和FKE没有显著差异;(2)极端点对高百分比(85%～100%)下MCP影响显著,而FKE对极端点影响控制较好;(3)FKE家域外形复杂,计算结果受平滑度系数设置影响显著。因此,研究领域行为时,应同时使用FKE和95%MCP两种方法。当数据分布较理想时,FKE能够给出更为准确的面积估计,而MCP则因其通用性,使得研究数据与其他研究的结果更具可比性。

摘要: Home range studies have been focused on determining home range size and utilization distribution. However,most analysis have failed to take into account the activity and function of the animals while using their home ranges. We radio tracked 3 Tibetan foxes(Vulpes ferrilata) during April 2006,September-October 2006,March-May 2007,September-October 2007 and March-April 2008 in Dulan County,Qinghai Province,China. Based on the behaviors and spatial distributions of resource use,we partitioned home ranges into 4 main functional regions:core active region,core inactive region,peripheral active region,and peripheral inactive region. We measured biological characteristics of each region. Core active regions were smaller than core inactive regions,and the peripheral active regions were larger than peripheral inactive regions. Plateau pika(Ochotona curzoniae) densities in both the core active region and peripheral active region were significantly higher than those in counterpart inactive regions. Compared with core inactive regions,core active regions were more likely to be located in areas with gentle slopes,lower elevations and lower positions on slopes. Compared with peripheral inactive regions,lower slope positions were preferred by Tibetan foxes for peripheral active areas,whereas slope and elevation did not differ.