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Preliminary Studies on Factors of Soil Barriers at Afforestation Belts from Main Sightseeing Areas of the Ditan Park in Beijing

Gong Xuekong et al(Beijing Agricultural College 102206)  
In this paper, physical characters of soil such as compactness , volumeweight,total porosity and moisture content were studied from ten afforestation areas of mani sightseeing areas in the DitanPark , Beijing,Also,its chemical characters of organic matter, total nitrogen, rapidly available nitrogen, total phosphorous, rapidly available phosphorous ,pH and total salt were dealt with,Relationship between soil barrier factors and plant growing were studied in these areas, which showed that some unfavorably physical and chemical characters affect normal growing of plants.This study provides theoretical basis for improvement of soil and maintenance of trees in the DitanPark.
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