niche breadth

The niche breadth and niche overlap of 18 dominant species in O. coerulea communities in mount Wutai were studied by using Levins and Shannon-Wiener's indexes and Petraitis's methods.

采用Shannon-Wiener和Levins指数以及Petraitis特定重叠指数对五台山蓝花棘豆群落的18个优势种群的生态位宽度和生态位重叠进行了研究。

The relationship between food niche breadth or niche overlap and body size was also insignificant.

此外各种鼩鼱的食性宽度和种间食性重叠度和体型大小的关系亦不明显.

The results showed that on mobile sand, Hedysarum scoparium had the widest niche breadth, followed by Artemisia arenaria.

结果表明：在流动沙地上花棒的生态位宽度最大，其次是沙蒿；

The height niche breadth and overlap of main tree species in gaps and non-gaps in the karst forest in Maolan Nature Reserve were studied.

对茂兰自然保护区中喀斯特森林林隙内外主要树种的生态位宽度和生态位重叠进行了研究。

The niche breadth, overlap and proportional similarity of and, Coccobius azumai , Encarsia amicula and E.

的林间生态位, 测定生态位宽度 、 重叠和比例相似性.

Adopting Shannon-Wiener, the niche breadth index, the article classified constructive species on both slopes into 3 ecologic groups respectively.

本文采用Shannon-Wiener生态位宽度指数将南北坡群落的建群种群分别划分为3个生态类群。

The index of temporal niche breadth or overlap index of spiders in the late rice field is bigger than that of the spiders in the early rice field. Time is

晚稻田蛛虫的时间生态位宽度及蛛虫的时间生态位重叠指数均大于早稻田蛛虫的时间生态位宽度和生态位重叠指数

The results showed that, the biological and ecological characteristics of Artemisia capillaris Thunb determined its predominant station in this ( region), and its niche breadth in 2002 and 2003 were bigger than other species ( 0.758 and 0.868) continuing to keep rising trend.

结果表明：茵陈蒿的生物、生态学特性决定了它在该区的优势地位，2002年、2003年其生态位宽度远远高于其他物种（0.758和0.868），并且继续保持上升趋势；

Predatory mite has narrower temporal niche overlap, but has wider spatial-niche overlap with the two mites, and its niche breadth of food recipes narrow, so it can be utilized to control the mites with the other natural enemies.

天敌与叶螨间的时空生态位重叠以及天敌食谱生态位宽度结合分析有助于合理评价天敌的控制作用。

Analysis on the Niche Breadth and Resource Competition of the Four Termite Species

4种白蚁生态位宽度与资源竞争分析

The niche of three species in cabbage field was also analyzed. Quantitative estimation of niche breadth and overlap were done, according to temporal niche, spatial niche and temporal-spatial two dimensional niche.

在田间条件下，从时间、空间以及时空二维生态位对星豹蛛、菜蚜、小菜蛾进行生态位宽度和重叠值的定量估计。