Study On The Influence Of Afforestation Measures On Soil Properties In Miyun

Choosing the new planted water conservation forest as the research object in Miyun,the influence of afforestation measures on soil properties were focused,and the function of the afforestation measures on water conservation were also analyzed.By investigating and analyzing on the measure system,the Supplement measures were raised,which could complete the current measure system.The main study reasults including:(1)From the comparative test of afforestation measure,we found that the function of current afforsetation measures was ineffective on changing the soil bulk density and soil mechanical composition,but it was effective on changing soil porosity.The correlation between soil porosity and soil bulk density, soil mechanical composition was not close.(2)From the comparative test of afforestation measure,we also found that the function of current afforestation measure was ineffective on changing the TP,AP and TK,but it was effective on changing TN and AK.The correlations of variable quantity and relative variation between TN and organic matter,AK and AP were close.(3)The current afforestation measures were good for changing the ability of hold water,storage water and infiltration capacity.In the same time,they were also effective on improving water availability.(4)From the correlation between physical factors and fertilizer factors, physical factors and water conservation ablility, fertilizer factors and water conservation ablility,we found that changing the physical factors could effect the water conservation directly;changing fertilizer factors only effect the water conservation indirectly.(5)According the investigtion and research,we raised the wind barrier,orchard cover,plant fertilizer,water harvesting facilities and set the film bag as supplements to help water forest of young trees to grow better.