Desertification process as a great problem affects most of the countries in the world. This process has a high rate in arid and semiarid areas. Today, human societies are en- countering the desertification phenomenon ...Desertification process as a great problem affects most of the countries in the world. This process has a high rate in arid and semiarid areas. Today, human societies are en- countering the desertification phenomenon as a serious problem which causes various ir- reparable damages to economic and social sectors. In order to assess desertification results in production of different regional models for their application in another region the indices should be re-investigated and adjusted to local conditions. Several models have been de- veloped for desertification evaluation. The present study, attempts to assess quantitatively the desertification process has in an area located at Sistan plain of Iran （Niatak region as a case study） by using Modified MEDALUS method. The obtained results indicated that of the whole studied region （comprising 4819.6 acres）, 2651.56 acres （55%） are located in medium de- sertification intensity class, 1269.48 acres （26.34%） are positioned in severe desertification intensity class, and 898.54 acres （18.64%） are placed in vary severe desertification intensity class.展开更多
文摘Desertification process as a great problem affects most of the countries in the world. This process has a high rate in arid and semiarid areas. Today, human societies are en- countering the desertification phenomenon as a serious problem which causes various ir- reparable damages to economic and social sectors. In order to assess desertification results in production of different regional models for their application in another region the indices should be re-investigated and adjusted to local conditions. Several models have been de- veloped for desertification evaluation. The present study, attempts to assess quantitatively the desertification process has in an area located at Sistan plain of Iran （Niatak region as a case study） by using Modified MEDALUS method. The obtained results indicated that of the whole studied region （comprising 4819.6 acres）, 2651.56 acres （55%） are located in medium de- sertification intensity class, 1269.48 acres （26.34%） are positioned in severe desertification intensity class, and 898.54 acres （18.64%） are placed in vary severe desertification intensity class.
