Abstract

Siroos Jafari*

Active sand dunes are part of the ecosystems of arid and postarid regions, which are important factors threatening life and buildings in these large areas of the globe. In order to protect the adjacent lands from being bitten by these hills, these sand dunes have been controlled with oil mulch and at the same time Prosopis juliflora, Tamarix, and Calligonum comosum trees have been planted in the bottom part of these areas. In this regard, over 250,000 hectares of land in this province has been established for about 60 years (1960 onwards). These trees were irrigated in the first years and then with the development of roots and the use of groundwater, their moisture needs were met and established. Moisture supply is provided by the side drainage of Karkheh River which is added to these sand dunes.