It was learned by investigation and analysis that there was abound of radia- nt resources and heat resources in the micro-valley of Hulutao Gully and the precipitetion chang a lot so it was easily drought and easily water logging as well in the area.

• 通过调查和分析得知,葫芦头沟小流域辐射资源丰富,热量资源充足,降水变率大,易旱易涝。