高山兀鹫是繁殖于高海拔大型食腐类，属于保护物种。仅有少数描述性报道，且疑点诸多，缺乏繁殖生物学及种群状况研究。近年由于栖息地丧失，种群状况堪忧。十多年来我们在新疆、青海、西藏、四川等西部地区调查，发现10几个高山兀鹫繁殖区，对其习性和种群状况有了初步认识。拟采用样线和样点法，评估其种群大小、集群结构和动态变化。运用改进的信息理论方法、多重回归方程建立生境、巢址因子间预测模型,并应用资源选择函数揭示高山兀鹫对生境、巢址因子选择性,结合地理信息系统进行评价。借助定位观察、卫星跟踪、电子标记、红外监视、食物分析，展开生物学研究。采用焦点取样法观察记录繁殖行为，并构建行为谱。通过毒理分析，比较化学物质在其体内不同组织的含量，获得猛禽食物链中的富集过程。分析污染、生境丧失、食物匮乏、繁殖力下降、兽药滥用、人为干扰与高压电线等因素对种群及生存影响，且通过种群生存力分析确定影响主要参数，提出保护管理措。

The Himalayan Griffons Gyps himalayensis live mostly in the high altitude mountains with elevation above 3 000 m (range 700-6 500 m) and their nests are observed in the highest sites compared to other Old World Gyps vultures. As a scavenger, this species is a top consumer in ecosystem, and it plays an important role in the ecological balance keeping, and has a great ecological and economic value. The griffons have the vast geographical distribution from the Himalayan Mountains in the south to Mongolian Mountains in the north, concentrating in the Tibetan Plateau, Tianshan Chains and Kunlun Mountains. More than 10 years, the group of the applicant in the western region of Xinjiang, Qinghai, Tibet, Sichuan and other areas found a dozen vulture breeding areas, their habits and population status were an initial understanding. But our knowledge about the reproductive biology and population dynamics of this species is very limited, and published information about Himalayan Griffon is quite ambiguous in many cases. The purpose of this project is collection more accurate data on the geographical distribution of the Himalayan griffons and their main reproductive grounds, research their breeding ecology and population status. We suppose to use the transect lines and points for focal sample counts due to estimate the population size and its dynamics, study the cluster and age structure of the Griffon population. We can use collected information for the theoretic approach and logistic regression due to build the prediction model for the Himalayan Griffon preference in habitat and nest-sites. We will use the resource selection indexes and resource selection functions for researching the primary ecological parameters of the species. Using the ROC curve technique as the precision testing method, we'll create the prediction model. In addition, we'll investigate the habitat and nest-site of the griffon by 3S technique (GPS, GIS, RS). Binoculars and telescopes will be used for study of the reproductive behavior with the focal sampling method during breeding season. The griffon ethogram will be established following by the PAE action coding system. Moreover, we'll do the toxicological analyses of Himalayan Griffon organs for the persistent organic pollutants and homolog composition, and obtain the different degree of bioaccumulation of various organs and biomagnification of these congeners along the food chain of this raptor. Analyses the limitation factors for the geographical distribution and living environment of the Himalayan Griffon including habitat loss, loss the food sources, abuse veterinary drugs, power line strikes, human disturbance, combined with the population viability analysis will help to identify the main impact factors influencing on the population dynamics. These data can be used in the future for organizing more effective protection system and improvement of the conservation activities for the Himalayan Griffon and its habitat.