you are in the mountainous lands tepe mare in the lands that are sloping, now unfortunately in some lands, people or overgrazing or the impoverishment of our pastures from thousands of plants , should do this about erosion and to announce exactly what programs should be implemented in the country for the amount of erosion. from soil erosion, now the most important of the exceptions or our national marathi resources, well , there are many factors of erosion, we have water erosion , we have wind erosion, we have erosion caused by the implementation of structures and facilities on the ground, we have the implementation of soil destruction , these are all factors that lead to erosion, but the main one erosion our erosion factor is water erosion it is caused by the floods that you know you are expecting, and the climate change in general. the world has happened in iran as well, the intensity of our rainfall has increased , that is, the rainfall that was snow has turned into rain , and the rains are raining with a higher intensity in a shorter time. one of the methods for the construction of su