The quantitative relationship between vegetations and groundwater depth in shallow groundwater area of Ordos Plateau
The quantitative relationship between vegetations and groundwater depth in shallow groundwater area of Ordos Plateau
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发表时间：
2013
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通讯作者：
Guo Li
中科院分区：
文献类型：
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作者：
Guo Li
Based on the methods of field investigation and exposing groundwater table by sinking shallow wells with hand drill,the quantitative relationship between groundwater depth and total coverage of vegetation community,respective coverage of each species and species succession in Subei Lake of Ordos plateau were established.The results show that there is significant correlation between total coverage of vegetation community and groundwater depth within 1.6m.The ecological groundwater depth of wet species including Carex tristachya,Suaeda glauca Bge,Phragmites australis and Achnatherum splendens are 0.4m,0.6m,0.8m,0.8m and 1.6m respectively.The relationship between species succession and groundwater depth shows that wet and saline vegetations are predominant when groundwater is depth less than 0.6m.Xerophyte and sandy vegetation are predominant when groundwater is above 3.2m.In addition,1.6m is the critical groundwater depth of vegetation ecotone.This region has the largest number of vegetation species.The law of distribution and species succession in different groundwater depth can provide important scientific roles for vegetation change prediction under groundwater development and utilization.
