[Community succession patterns of pests and natural enemies in jujube orchard ecosystem].
Through investigation and by the methods of optimal partitioning, principal component analysis, and one-or two-dimensional ordination, this paper analyzed the main groups and succession trends of the pest and natural enemy communities at a jujube orchard of Taigu area. The results showed that the communities had more obvious dominant factors and temporal succession pattern. The first three principal components of the communities had a bigger variation, with an obvious follow effects. The community succession was temporally divided into four stages, i. e., in the periods of pre-budding, leaf expanding and blooming, fruiting, and maturing. The dominant species of pests and their natural enemies were demonstrated.
Shanxi Agricultural University, Taiyuan, China. glshi@126.com
Guanglu
G
Shi
Suqi
S
Liu
Hui
H
Cao
Minjia
M
Huang
Yinbao
Y
Xi
Lilin
L
Zhao
Dengke
D
Li
Jin
J
Feng
D000818:Animals; D002681:China; D017753:Ecosystem; D007313:Insecta / Q000502:physiology*; D011235:Predatory Behavior / Q000502:physiology*; D031957:Ziziphus / Q000469:parasitology*