In order to reveal the influence of mining subsidence on physical and chemical properties of soil

provide scientific theories for land reclamation of windy desert area in Arid and Semi-arid Regions

here measures and figures out the soil mechanical composition

bulk density

soil porosity

field water-holding capacity

saturated conductivity and nutrient of subsidence area and no-subsidence area in Bulanta mining area that lies in southeast Mu Us Sandland using basic principles and methods of Soil Science.The result of anova shows: the physical clay content of sinking dune

especially in the 10 cm of surface

significantly decreases;bulk density and soil porosity of top and middle in sinking dune is not significantly different

however

bulk density of bottom and depression in sinking dune significantly decreases

soil porosity of bottom and depression in sinking dune significantly increases;bulk density and soil porosity from 0 to 40 cm is not significantly different

but bulk density from 40 to 100 cm significantly decreases

soil porosity from 40 to 100 cm significantly increases;field water-holding capacity from 0 to 60 cm significantly decreases;saturated conductivity from 0 to 60 cm is not significantly different;total nitrogen

total potassium and total phosphorus from 0 to 100 cm is not significantly different.