ارزيابي تناسب اراضي براي كاربري هاي كشاورزي و مرتعداري با روش تركيب خطي وزن دار (مطالعه موردي: حوزه آبخيز قوري چاي استان اردبيل)

Ecological land capability evaluation for agriculture and range management using WLC method (Case study: Ghoorichay catchment, Ardabil province)

زﻣﯿﻨﻪ و ﻫﺪف: ﻟﺰوم رﻋﺎﯾﺖ ﻧﮑﺎت آﯾﻨﺪه ﻧﮕﺮي و ﺗﺮﺳﯿﻢ ﺳﯿﻤﺎي آﯾﻨﺪه ﺗﻮﺳﻌﻪ، ﮔﺮاﯾﺶ ﻫﺎ را در زﻣﯿﻨﻪي ﺑﺮﻧﺎﻣﻪرﯾﺰي و ﺑﻬﺮه ﺑﺮداري ﻋﻘﻼﻧﯽ از ﻣﻨﺎﺑﻊ ﺳﻮق ﻣﯽ دﻫﺪ. ﺣﻮزه آﺑﺨﯿﺰ ﻗﻮري ﭼﺎي ﯾﮑﯽ از ﺣﻮزه ﻫﺎي ﺷﻤﺎل اﺳﺘﺎن اردﺑﯿﻞ ﺑﻪ ﺷﻤﺎر ﻣﯽ رود ﮐﻪ ﻧﻘﺶ ﻣﻬﻤﯽ در اﻣﺮار ﻣﻌﺎش ﻣﺮدم ﺑﻮﻣﯽ ﻣﻨﻄﻘﻪ دارد. ﻫﺪف از ﺗﺤﻘﯿﻖ ﺣﺎﺿﺮ، ارزﯾﺎﺑﯽ ﺗﻮان اﮐﻮﻟﻮژﯾﮏ و ﺗﻌﯿﯿﻦ ﺗﻨﺎﺳﺐ اراﺿﯽ ﺑﺮاي ﻓﻌﺎﻟﯿﺖ ﻫﺎي ﮐﺸﺎورزي و ﻣﺮﺗﻊ داري در ﺣﻮزه آﺑﺨﯿﺰ ﻗﻮري ﭼﺎي اردﺑﯿﻞ در ﺳﺎل 1394 ﻣﯽ ﺑﺎﺷﺪ. روش ﺑﺮرﺳﯽ: در ﻣﺮﺣﻠﻪ اول، ﺑﺎ ﺑﺮرﺳﯽ ﻣﻨﺎﺑﻊ و ﮐﺴﺐ اﺳﺘﺎﻧﺪاردﻫﺎ، ﻣﻌﯿﺎرﻫﺎي ارزﯾﺎﺑﯽ ﺗﻮان ﮐﺸﺎورزي-ﻣﺮﺗﻊداري ﻣﺸﺨﺺ ﮔﺮدﯾﺪ. در ﻣﺮﺣﻠﻪ ي ﺑﻌﺪ، ﮐﻠﯿﻪ ي ﻻﯾﻪﻫﺎ ﺑﺎ ﻓﺮﻣﺖ ﻣﺸﺎﺑﻪ ﺑﻪ ﺳﯿﺴﺘﻢ اﻃﻼﻋﺎت ﺟﻐﺮاﻓﯿﺎﯾﯽ )3GIS( وارد و ﺑﺎ روش ﻓﺎزي اﺳﺘﺎﻧﺪاردﺳﺎزي ﺷﺪﻧﺪ. در اداﻣﻪ، از ﻓﺮاﯾﻨﺪ ﺗﺤﻠﯿﻞ ﺳﻠﺴﻠﻪ ﻣﺮاﺗﺒﯽ )4AHP( و ﻣﺎﺗﺮﯾﺲ ﻣﻘﺎﯾﺴﺎت دوﺗﺎﯾﯽ، ﺑﺮاي وزن دﻫﯽ ﺑﻪ ﻣﻌﯿﺎرﻫﺎ و زﯾﺮﻣﻌﯿﺎرﻫﺎ اﺳﺘﻔﺎده ﺷﺪ و در ﻧﻬﺎﯾﺖ، ﮐﻠﯿﻪ ﻻﯾﻪ ﻫﺎ ﺑﺎ اﺳﺘﻔﺎده از روش ﺗﺮﮐﯿﺐ ﺧﻄﯽ وزن دار )5WLC( ﺗﻠﻔﯿﻖ ﺷﺪﻧﺪ. ﯾﺎﻓﺘﻪ ﻫﺎ: ﺑﺮ اﺳﺎس ﻧﺘﺎﯾﺞ، 9811 /42 ﻫﮑﺘﺎر )82/85%( از ﻣﻨﻄﻘﻪ ﺑﺮاي ﻓﻌﺎﻟﯿﺖ ﮐﺸﺎورزي و 2027/31 ﻫﮑﺘﺎر )17/15%( ﺑﺮاي ﻓﻌﺎﻟﯿﺖ ﻣﺮﺗﻊ-داري داراي ﭘﺘﺎﻧﺴﯿﻞ اﺳﺖ. ﻧﺘﯿﺠﻪ ﮔﯿﺮي: ﺑﺮ اﺳﺎس ﻧﺘﺎﯾﺞ ﺑﻪ دﺳﺖ آﻣﺪه از اﯾﻦ ﭘﮋوﻫﺶ، ﺑﯿﻦ ﮐﺎرﺑﺮي ﻓﻌﻠﯽ اراﺿﯽ و ﭘﺘﺎﻧﺴﯿﻞ ﺳﺮزﻣﯿﻦ ﺑﺮاي ﮐﺸﺎورزي و ﻣﺮﺗﻊداري در ﻣﻨﻄﻘﻪ، راﺑﻄﻪي ﻣﺘﻌﺎدﻟﯽ ﺑﺮﻗﺮار ﻧﯿﺴﺖ.

Background and Objective: Comments regarding futurism and portraying the future development lead trends in the field of planning and rational exploitation of resources. Ghoorichay is one of the catchments in the north of Ardabil province that has critical role in local people’s livelihood. The purpose of this study was to evaluate ecological land capability and determine the suitability rate for agriculture and range activities in Ghoorichay catchment. Method: First, by reviewing of the sources, the agriculture capability evaluation criteria were defined. In the next step, all of the criteria were imported to the Geographic Information System (GIS) with the same format and were standardized. Then, Analytical Hierarchy Process (AHP) and binary comparison matrix were used to weight to the criteria and sub criteria and finally, all of the criteria were combined using Weighted Linear Combination (WLC) method. Findings: Based on the results 9811/42 hectares (82/85%) for agricultural activity and 2-27/31 hectares (17/15%) for rangeland activity have potential. Discussion and Conclusion: According to the results, there is not a balanced relationship between current land uses and the land ecological capability for agriculture and range management in the study area.