[Responses of spatial distribution pattern of Artemisia ordosica population to the precipitation gradient on Ordos Plateau].
Five sites along the precipitation gradient (336-249 mm x a(-1)) from east to west in Ordos Plateau were selected to study the spatial distribution pattern of Artemisia ordosica population and its responses to the precipitation gradient by the methods of variance mean ratio, aggregative index, and point pattern analysis. The reduction of precipitation affected the spatial distribution pattern of A. ordosica population significantly. With decreasing precipitation gradient, the spatial pattern of A. ordosica population changed from uniform to random in small scale, and from random to clumpy in large scale, suggesting that in the ecological restoration of Ordos Plateau, a rational arrangement of A. ordosica should be made.
Li
Qiu-shuang
QS
State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China. liqiushuang@ibcas.ac.cn
Zhang
Chao
C
Wang
Fei
F
Lai
Li-ming
LM
Zhang
Li
L
Li
Wen-ting
WT
Bai
Hua
H
Zheng
Yuan-run
YR
D000531:Altitude; D019306:Artemisia / Q000145:classification* / Q000502:physiology; D002681:China; D017753:Ecosystem; D011157:Population Dynamics; D011891:Rain; D012987:Soil / Q000032:analysis*; D014867:Water / Q000032:analysis; D014872:Water Movements
D012987:Soil; D014867:Water