关键词: Moran指数, 局域统计量, 森林碳储量, 空间分布

Abstract: From May 2009 to May 2010, an experiment with random group design was conducted to study the growth and development of brown frog (Rana dybowskii) under simulated enclosure understory environmental condition and under greenhouse increasing temperature condition. As compared with the condition in enclosure, the average air temperature, ground temperature, humidity, and effective accumulated temperature in greenhouse increased significantly. The brown frogs in greenhouse had a shortened development period, advanced sexual maturity, and increased proportion of 2-year-old sexually matured females. The breeding rates of female frogs in greenhouse and in enclosure were 93.1% and 76.0%, respectively. In greenhouse, the growth of brown frogs accelerated, and the body weight of 1- and 2-year-old frogs was (6.30 ± 2.62) g and (36.55 ± 11.79) g, being 85.5% and 56.6% higher than that in enclosure, respectively. The brown frogs in greenhouse ended their hibernation and began their foraging in advance, and stopped foraging and began hibernation in delay, with an extending growth period. Likewise, their average fecundity per nest increased. There was a significant positive correlation between the body weight and fecundity of brown frog (r=0.921, P<0.01).

Key words: Moran index, local statistics, forest carbon storage, spatial distribution.