摘要
这次航空调查是在前３次保护区２１万ｈｍ２的湿地面积航空调查的基础上进行的第 ４次航空调查．调查结果表明丹顶鹤在保护区的数量为 ３４６ 只、 ６６巢，数量明显增加．这样的调查旨在监视丹顶鹤栖息环境及种群动态，为资源的有效管理、生态的全面保护提供科学依据．
In the area of 210 000 hm2. Having aerially surveved this area four times. The result showed that there were 346 red-crown cranes and 66 nests over the whole area. It was important to provide scientific decision-making for effective management of natural resource and protection of ecological environment.
出处
《高师理科学刊》
2000年第2期59-60,共2页
Journal of Science of Teachers＇College and University
