Effects of Different Types of Dunes on Occurrence of Apocheima cinerarius in Caragana korshinski Shrubs
CHEN Yingwu
XIA Yanfei
Abstract：To illustrate the influence of different types of dunes on occurrence of Apocheima cinerarius in Caragana korshinski shrubs,the fixed sand,semi-fixed sand and semi-mobile sand were selected as re-search plots to explore the effect of different habitat on occurrence of A. cinerarius in C. korshinski shrubs in southeast region of Tengger desert. The results showed that the average population densities of A. ciner-arius in three habitats were 147. 00,28. 67 and 0. 37 individuals per plant,respectively. The victimization rates of C. korshinski were 99. 67%,64. 67% and 1. 33%,respectively. The occurrence of A. cinerarius was significantly different in the three types of sand,which was most serious in semi-fixed sand,followed by fixed sand and semi-mobile sand. Correlation analysis of A. cinerarius occurrence and environmental factors ( soil physical and chemical properties,vegetation parameters) showed that the damaged rate and insect population density negatively correlated with soil powder content,cover of soil biological crust and C. korshinski density(P<0. 05),and positively correlated with soil silt content,soil water content,and C. korshinski canopy and height(P<0. 01). The occurrence of A. cinerarius in C. korshinski shrubs was relat-ed with stability of soil surface and soil water content of deep layer.
Keywords：Apocheima cinerariusCaragana korshinskidunesharm
Publication Date：2017-01-31
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 69-72 )