The small watershed is the complexed gigantic system out of the sub-systems of ecology

economy and sociey

the harness of the small watershe is in fact a coordinating to the three sub一systems. Analysing the nature and characters of small watershed and its harness from the point of philosorphy it is thought that not only the linear

inner

standard

balance

gradual advancement

stable

transparent

definition

precise and qualitative nature should be studied

but also the composition

structure and function as well as the evolving process and the factors affecting the benefit from harness of small watershed be examined

thus the opposite of the small watershed and its harness be understood

which would provide correct methodology to recognize the factors of small watershed and their relations from each other

to master the laws of development of the whole system and formulate reasonable plan and strategy to harness small watershed.