新疆车尔臣河下游塔里木马鹿(Cervus elaphus yarkandensis)生境适宜性评价

塔里木马鹿(Cervus elaphus yarkandensis)是唯一分布在干旱地荒漠的珍稀动物,历史上广泛分布于塔里木河流域,现仅分布在沙雅、尉犁和且末地区。作者通过2005-2007年的实地调查,在地理信息系统的支持下,以水源、隐蔽条件、植被类型和人类活动等为评价因子,采用生境评价模型,对塔里木马鹿的主要分布区之一车尔臣河下游阿克塔孜牧场地区进行了适宜性评价。结果表明:不考虑人类活动影响时塔里木马鹿的适宜和次适宜生境面积分别为22278.6hm2和64425.0 hm2,分别占研究区面积的13.01%和38.79%;考虑人类活动影响时,塔里木马鹿的适宜和次适宜生境面积分别减少了3.77%和5.35%,而不适宜生境面积增加了7.96%。

Habitat Suitability Assessment on the Tarim subspecies of Red Deer (Cervus elaphus yarkandensis) in the Lower Reaches of Cherchen River,Xinjiang,China

Tarim sub species of red deer(Cervus elaphus yarkandensis)is a endangered and endemic animal,and once was widely distributed in arid desert environment in Xinjiang,but now its distribution is restricted to the regions around Xaya,Lopnur and Qarqan county.Based on field investigation from 2005 to 2007,the habitat suitability of red deer subspecies in the Aktaz region assessed.Water source,shelter condition,vegetation types and human activities were selected as factors for habitat suitability assessment,and the habitat evaluation procedure for the assessment was conducted by GIS.The results showed that in the absence of human activities,the area of sub-suitable and suitable habitats were 22278.6 hm2 and 64425.0 hm2,accounting for 13.01% and 38.79% of the total area investigated,respectively.In the presence of impacts of human activities,sub-suitable habitat and suitable habitat decreased by 3.77% and 5.35%,respectively,while the area of unsuitable habitat increased by 7.96%.