中文摘要
秃鹫是繁殖于高海拔地区的大型食腐鸟类,属于国家重点保护物种。以往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。十多年来在新疆天山山脉数千公里范围里调查,零星发现了几个秃鹫繁殖区,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秃鹫对生境、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,提出保护管理措施。
英文摘要
Black Vulture (Aegypius monachus) is a large scavenger that breeds in high mountain and plateau areas. As the state key protected species, there is little information on it and lack of the research about reproductive biology and population distribution in China. In recent years, due to the loss of habitat, population situation is grim. We surveyed thousands of kilometers in the Tianshan Mountains of Xinjiang for the past ten years, found several breeding points about Black Vultures, more or less. Based on this, we have a preliminary understanding for its habits and the population situation. We propose used the sample line method and the sample point method to evaluate its population size, cluster structure and population dynamics. Using the improved information theory and multiple regression equation establish the prediction model about habitat and nest factor. And applying the resource selection function that reveals the selectivity factor of vultures in habitat, nest site, combining with geographic information system to evaluate. We carry out biological research through locating observation, satellite tracking, electronic tags, camera traps, and food analysis. Using focus sampling observes and records reproductive behavior, building behavior spectrum. It stays near the nest until Oct/Nov. I believe it is learning how to fly and soar and memorizing the topography of it's birth area. It is training for the marathon as opposed to a sprint. Then one day it leaves the reserve and goes south. Obviously to save the species it needs to be protected all along the migration route. Through the analysis of toxicology, compare the content of chemical substances in the different tissue in the body, obtaining the concentration process of chemical substances in food chain. Analysis the factors of pollution, habitat loss, the lack of food, fertility decline, veterinary drug abuse, human disturbance and power lines effect on the population and survival of Black Vulture, and determine the main parameters by population viability analysis, putting forward the protection and management measures.
