Results of the present study could be considered as references of reproduction researches and improvement of ecologicalobservation methods of the Yangtze finless porpoise.
本研究的结果对开展长江江豚繁殖研究和改进江豚生态学观察方法具有参考价值。
2
The observation method of fixed position was used to study the characteristics of ecological environment in closing process of engineering young forest of Pinus massoniana Lamb from 1991 to 1996.
年，对桂东南马尾松工程幼林郁闭过程的生态环境变化进行定位观测研究。
3
The observation that landscape pattern had a high degree of autocorrelation in a certain gradient possibly indicates that some kind of ecological process plays an important role.