In semi-arid areas in northwestern Liaoning Province,where the sand dust storm,water exhaustion,serious soil erosion and drought have occurred frequently,the survival rate of afforestation has become constantly low in the northwest region of Liaoning Province.Thus it is essential to put greater concentrations on wind-break,sand-fixing,water and soil conservation.Considering the present situation of natural conditions and existing plantation patterns,the laws of water,heat and land forms changing trend have been analyzed.This paper has made an evaluation of eight typical tree species groups according to the region using Grey relational analysis method primarily,based on the first national forest resources and second Liaoning provincial forest resources inventories.Furthermore,the five most relevant indicators such as average tree height and diameter at tree breast height,soil thickness,thickness of humus and leaf litters were selected according to wind-break protection,sand-fixing,better water and soil conservation.Then the most appropriate tree species groups for seventeen regions were determined.The results show that the superior species for these regions are as follows:the oak forest group from Fuxin county,Jianchang county,Longcheng district,Kazuo Xingcheng city and Nanpiao district respectively;the larch group from Longgang district and Jianping county;the sect.pinus group from Taihe district,Lingyuan and Zhangwu county;the locust group from Beipiao city,Huanzhong county and Chaoyang county;the Pinus sylvestris group from Kangping county,slow growing poplar group from Yi county and Lianshan district.The results of the study have provided a solid foundation and theoretical basis and guiding significance for future selection of tree species in arid regions in northwestern Liaoning Province and the harmonious development of social economy,ecological and environment.
ZHAO Lin
,
DENG Jifeng
,
ZHOU Yongbin
,
DAIQING Gele
,
MA Chengzhong
,
YANG Lixin
. Silviculture Decision of Tree Species Selection in Semi-arid Areas in Northwestern Liaoning Province Based on Grey Relational Theory[J]. Forest and Grassland Resources Research, 2016
, 0(5)
: 77
-85
.
DOI: 10.13466/j.cnki.lyzygl.2016.05.014
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