桃一点叶蝉及草间小黑蛛空间格局的地学统计学研究  

Geostatistical analysis on spatial patterns of Erythroneura sudra and Erigonidium graminicola.

作　　者：邹运鼎[1] 毕守东[1] 周夏芝[1] 李磊[1] 高彩球[1] 丁程成[1] 

机构地区：[1]安徽农业大学,合肥230036

出　　处：《应用生态学报》2002年第12期1645-1648,共4页Chinese Journal of Applied Ecology

基　　金：安徽省自然科学基金 (95 农 0 5 );安徽省教委基金资助项目(95JL0 0 3 2 )

摘　　要：应用地学统计学的原理和方法研究了不同时期桃一点叶蝉及草间小黑蛛种群的空间结构和空间相关性 .结果表明 ,不同时期桃一点叶蝉种群的半变异函数曲线皆为球型 ,其空间格局为聚集型 ,变程在2 5 .71～ 37.14m之间 ,草间小黑蛛种群的拟合半变异函数也表现为球型 ,呈聚集空间格局 ,空间变程在2 5 .12～ 4 4 .0 6m之间 ,并与桃一点叶蝉种群在数量和空间上有较强的追随关系 ,说明草间小黑蛛种群是桃一点叶蝉种群的优势种天敌 .The spatial construction and distribution of Erythroneura sudra and Erigonidum gramimicola at different periods were investigated with geostatisics. The results showed that the semivariogram of Erythroneura sudra was described by spherical model,indicating an aggregated spatial arrangement. The range was 25.71～37.14 m. The semivariograms of Erigonidum graminicola was fitted by spherical model too,also indicating an aggregated spatial arrangement,and its range was 25.12～44.06 m. The amount and spatial distribution of Erigonidium graminicola was closely related to that of Erythroneura sudra. It reveals that Erigonidium graminicola is the dominant natural enemies influening the population of Erythroneura sudra.

关 键 词：桃-点叶蝉 草间小黑蛛 空间格局 地学统计学研究 

分 类 号：Q968[生物学—昆虫学]