This essay was about the law of slope-directive variation of soil basic attributes in the eastern of Jinsha River of the northern Henduan mountains region

including from Erlangshan to Queershan et al.The results indicates that soil bio-accumulation and base leaching in windward slope(WS) are commonly more intense than that in leeward slope(LS)

because water condition in WS is more preferable than that in LS.These mainly embodies that soil organic substance and total nitrogen

soil total phosphorus in surface layer

CEC

available potassium content in WS are higher than those in LS

however soil pH and cation saturation

the degree of calcify and alkalization in piedmont base belt in WS are lower than those in LS.In level orientation

the soil slope-directive variation between WS and LS are the most distinct in Erlangshan

and become weak with the weakness of monsoon to the west till Queershan;In vertical orientation

they are the most distinct in piedmont base belt

and gradually minish or even are the same.Slope-directive variation of soil basic attributes between WS and LS in mountains deriving from water condition of meteorological factors are different from those of vertical zonality deriving from heat condition of meteorological factors

and those of between shady and sunny slope.