Rain water harvesting system has been used for several thousand years in Chi na. But till now, its techniques still stay in the original level. On the basis of investigation on styles of courtyard, we found that water harvested from courtyard could be used for the devel opment of courtyard economy. And by means of practical analysis .it was showed that water col lected from rain harvesting system in courtyard could recover investment very quickly. And the development of courtyard economy could stimulate the extension of water harvesting systems. So. this system can be used not only in areas with serious problems in getting drinking water but also areas where courtyard economy can be developed through rain water harvesting.
展开▼
