In the urbanization process

the change in land utilization is very swift.In order to investigate the effects of land utilization change and human activity on the spatial distribution of soil nutrient

we took the western suburb of Hangzhou as a research area.Sloping lands with three utilization ways of mixed forest

bamboo forest and cultivated sloping land were selected.In the horizontal direction

the whole sloping land was divided into four slope segments of the top

upper

lower and bottom

each of which has three samplings taken.In vertical direction

three depths at each sampling point were determined

i.e.

5

10 and 15 cm.Totally

36 samples were taken.The contents of N

P and K for each sample were measured

and 108 data were obtained for analysis.According to the measurements and systematic analysis

some conclusions have been gained.The absolute contents of N

P and K are the highest and the change in spatial distribution is the most obvious at the depth of 5 cm on sloping land.However

the most obvious change is observed at the depth of 10 cm on sloping land with bamboo forest.The change in the spatial distribution of the contents of N

P and K is very distinct.From the top of sloping lands to the bottom

the contents of N

P and K show a decreasing trend

and the intensity of decreasing trend is the greatest on sloping land.The main reasons for soil nutrient changes are the different ways of land utilization and the intensity and frequency of human activities.Loss of soil nutrient on sloping land is coincident with soil and water loss and water confluence.