Study On The Soil Organic Carbon And Black Carbon Along Highway

In this paper,Nanjing Lukou airport highway were studied。By analyzing the black carbon(BC) and organic carbon(OC) content of the soil sample which taked in different land,in different distances point at the same land and in different layer in the same distances point ,To illustrate the degree of influence that the motor vehicle to the soil with highway。(1)Research shows that the contents of OC and BC was different at the same distance point in woodland and wasteland。The content of BC in 10 meter point at woodland was higher than wasteland,But in this distance point such as 20 meter,50meter and 100 meter which was wasteland higher than woodland。This indicated that In the same distance point from highway,The wasteland were more influence by highway than woodland,because the tree barried BC`s proliferat far away and taking BC in a small scope。(2)Research shows that BC have a general trend at both land,that was: BC reduced along with the increase of distance,And It`s mainly accumulated in the 50 meters from highway。(3)The contents of BC and OC was also different in different layer,The contents which in surface layer was higher than under layer,But the margin from surface to under have no regular。It`s illustrated that the surface layer being more influence and pollution by human。(4)BC/Ocwas different in different distance。The BC/OC demonstrat the degree of pollution。In this paper,The data of BC/OC which near by roadside was in above 0.5。So,Its comply with the conclusion of Heyue`s research,Shows that the BC in the soil near by highway come from the emissions of motor vehicle。...