การทำลายป่าไม้ ต้นน้ำลำธารทำให้ป่าไ

The destruction of forests, streams upstream to forests being cut. Run-on water evaporation occurs from the surface soil is high, but the low soil penetrating the soil absorbs and holds water, it is less. As a result, the water flows into a stream at least b. A drought in the

Forest destruction Watershed forest is cut to make. Divided into sections The evaporation of water from the surface, but the surface low permeability. Soil absorb and retain Less water The water flowing into the stream was born. The dry season

The destruction of forests, river source makes forest was cut apart, the evaporation of water from the surface soil high but percolation through the soil. Soil adsorption and keep low. The water is less, resulting in water flows into the little brook was born, the drought in the season.