大熊猫的种群现状与保护

据近年来调查，大熊猫的种群数量，以岷山和邛崃最多，各约有３００余只；秦岭约有２００余只；凉山约有１００余只；大小相龄不足４０只，总数约１０００只。它们对栖息地生境的选择，各山系有共性，也有差异，但它们总是选择既能降低能量的消耗，又能获得营养价值较高的能量净收益。

Present Situation OF Population and Protection on the Giant Panda

According to investigation in recent years,there are more than 300 giant pandas in Qionglai mountain and Mingsan mountain respectively ,more than 200 in Qingling mountain;more than 100 in Liangsan mountain and less than 40 in Daxiang ling and Xiao xianglig mountains,and the total is 1 000 or so.There are different and common characters of the gaint panda on their selection to habitat in different mountains.The giant pandas always select the place where they can both reduce consumption of energy and get net income of energe of high value nourishment.DNA fingerprint has been applied to study genentic diversity on the giant pandas in the five mountains,and from high to low the order shows as follows:Qionglai mountain-Mingsan mountain-Qingling mountain-Langsan mountain-Xiangling mountain. Some theories and methods of population viability analysis are applied,and with the help of Vortex Model and without considering mutation and rlative restraint,population of giant panda on the whole keeps some reduction in the stability in different mountains,but it is possible for the giant pandas in Xiangling mountain to become extinct within neatly half one century.Habitat project of giant panda has heen started at present,and reserve has reached 29 and percent 80 habitat has been protected.Now forest has been prohibited to fell,green corridor has been set up,human interference has been reduced,disastrous elements have been controled;Under such circumstances it is possible to slow down the tendency of reduction.