Soil Nutrient Distribution and Fertility Quality Evaluation of Binhe East Road Greenbelt in Taiyuan
Binhe East Road is the main urban road running through the north and south of Taiyuan.Its roadside green space is an important foundation for the growth of urban greening plants,and also an im-portant transition zone between water and land ecosystems.In order to understand the soil fertility quality and nutrient characteristics of the green belt of Binhe East Road in Taiyuan city,field investigation and sampling were carried out on the green belt of the road side,and soil physical and chemical indexes such as pH,electrical conductivity,total nitrogen,total phosphorus,organic matter,nitrate and ammonia ni-trogen were compared and analyzed,and the soil fertility quality was evaluated by entropy weight method.The results showed that the soil of Binhe East Road in Taiyuan was alkaline and non-salinized.The or-ganic matter,total nitrogen and total phosphorus were all at high level,while ammonia and nitrate nitro-gen were at low level.pH and electrical conductivity showed low variation,while other soil physical and chemical indexes showed medium high variation with obvious spatial variability.In terms of the spatial distribution along the road direction,the variation range of total nitrogen,nitrate nitrogen and organic matter was large,while the variation of total phosphorus,ammonia nitrogen and electrical conductivity was relatively gentle.The contents of nitrate nitrogen,total nitrogen and total phosphorus were higher in sample B,organic matter content in sample C was significantly higher than other sample areas,and am-monia nitrogen content in sample F was higher.In terms of the spatial distribution of vertical road direc-tion,with the increase of the distance from the road,nitrate,total nitrogen and total phosphorus in-creased first and then decreased,organic matter and electrical conductivity increased,and ammonia ni-trogen increased first,then decreased and then increased.On the whole,the high values of physical and chemical indexes were all in the section 20-40 m away from the road.The average value of the compre-hensive soil fertility quality was 0.239.The overall soil fertility quality was relatively low.With the in-crease of the distance from the road,the soil fertility quality showed an upward trend after entering the natural area.On the whole,the fertility quality of the study sample land was poor and was greatly affected by human factors.The differences of soil nutrients in different areas of Binhe East Road green land could provide data support for soil improvement and carry out precise management of soil nutrients regulation in green land along the road according to local conditions.
soil nutrientfertility qualityspatial distributionentropy weight methodriverside green spaceTaiyuan City
NETL
NSTL
万方数据
