Re: RE: Re: Re: Re: Re: Re: Yellow River: Facts on File

[Michael Perelman <michael@xxxxxxxxxxxxxxxxx>]

I don't understand how it would lead to salinization, but the E. Asian ag.
system was remarkably sustainable.  Silting seems to be more related to
removing the forest cover.

On Wed, Jun 27, 2001 at 11:14:38PM +0100, Mark Jones wrote:
> Michael Perelman:
> >
> > You may know about this than I do, but the current would bring the silt
> > down to the sea over time.  If it just remained at the bottom of the
> > river, there would be no problem.
> >
>
> Surely the whole problem is that when waterways silt up they become
> unnavigable and irrigation systems fail; it also leads to salinisation, and
> I'm wondering why this isn't the problem, seemingly, in China that it was
> for instance in Persia and other ancient hydraulic societies.
>
> Mark Jones
>

--
Michael Perelman
Economics Department
California State University
Chico, CA 95929

Tel. 530-898-5321
E-Mail michael@xxxxxxxxxxxxxxxxx