陕西长青保护区勺鸡种群密度、分布及繁殖

为了了解勺鸡的种群密度、分布及繁殖信息，采用了日常巡护监测数据资料、分布图、样带法、样方法、跟踪调查法。得到勺鸡平均密度为0．2171只／hm2，由此推算勺鸡种群数量为1303只。勺鸡繁殖期选择产卵地点的因子是：巢址海拔区间1430～2220m；在林缘附近，坡度适中，坡向南或者东南、下坡位，巢向向阳；视野开阔、离水源近；有巢材，卵白色、卵数4枚；巢为地面巢，能遮风避雨；巢周围有栖材、沙浴场。勺鸡巢穴处的植被因子乔木、灌木、草本差异不明显，都有一定数量的乔灌草。未发现在乱石堆和无植被覆盖的地方有巢穴。

Population density distribution and breeding of koklass pheasant in Changqing nature reserve

A survey was conducted on the population density, distribution and breeding of koklass pheasant. The applied methods were daily patrolling, monitoring, data anglicizing, scatter gram, belt transect, quadrant method, and tracking survey. And the survey aimed at mastering the population densi- ty, distribution and reproduction information of koklass pheasant. The result showed that the average pop- ulation density of koklass pheasant was estimated to be 0.217 1 per hectare, thus the total number of the population could be around 1 303. There are versatile factors that influence the nesting selection of koklass pheasant, such as the altitude （ 1 430 ~ 2 220 m）, the natural resources （ near the forest and water, with a wide view, accessibility to nesting material , the habitat plant and sand bath）, the slop characters （to the south or southeast, a medium slope angle）. The nest of koklass pheasant is generally on earth, where a certain number of different vegetations like trees, shrubs and grass are surrounded, which can be a good shelter for laying eggs （ white, 4 per nest often） or chickens shelters from bad weather or preys. None of nests are found around the rock areas and places without vegetations. The conclusion can be drawn that on the whole, further research should be carried out on the subject and more attention should be focused on the habitat protection and administration.