湖南农业大学学报（自然科学版）2001，Vol.27Issue(2)：102-106,5.
尺度与方向依赖的二化螟种群空间格局及其模拟抽样研究
Population Spatial Distribution Pattern of Chilo supressalis and
Its Simulated Sampling in Different Scales and Directions
袁哲明 1贺智勇2
作者信息
- 1. 湖南农业大学植物科学技术学院,
- 2. 湖南农业大学计算机中心,
- 折叠
摘要
Abstract
To study fractal character which might exist in the distribution of insect, two new variables, scale and direction,were introduced to characterize spatial distribution pattern of the over-wintering larvae of Chilo supressalis and its simulated sampling. The results indicate that: 1) The population is up to generalized negative binomial distribution in 1×1 scale; 2) Its distribution shows spatial heterogeneity. Coefficient of variation and aggregation degree reduce in the order of line grille, block grille and row grille in the same scale; 3) The sampling estimated precision also decreases in the order of line sampling, block sampling and row sampling in the same scale and sampling fraction; 4) As for row sampling, the scales from 2×1 to 6×1 are more precise than that from 1×1 scale in the most situations.关键词
二化螟/空间分布格局/尺度/方向/抽样分类
生物科学引用本文复制引用
袁哲明,贺智勇..尺度与方向依赖的二化螟种群空间格局及其模拟抽样研究[J].湖南农业大学学报（自然科学版）,2001,27(2):102-106,5.
