Arzani, Hossein

Azimi, M.

Farahpour, Mehdi

Kaboli, H.

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings 21st International Grassland Congress / 8th International Rangeland Congress National Rangeland Monitoring and Inventory of Iran Hossein Arzani University of Tehran, Iran M. Azimi H. Kaboli Research Institute of Forests and Rangelands of Iran, Iran Mehdi Farahpour Research Institute of Forests and Rangelands of Iran, Iran Follow this and additional works at: https://uknowledge.uky.edu/igc  Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/5-1/9 The 21st International Grassland Congress / 8th International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact UKnowledge@lsv.uky.edu. 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅰ 　 瞯 ]649　 瞯Grasslands/Rangelands Resources and Ecology ——— Application of Information Technology in Monitoring and Managing Grasslands/Rangelands ResourcesNational rangeland monitoring and inventory of IranH . A rz ani1 ,M . A z imi , H . K aboli 2 and M . Farahpour21 University o f Tehran , E‐mail : harz ani＠ ut .ac .ir ,2 Research institute o f Forests and RangelandsKey words :monitoring , vegetation cover , site , satellite dataIntroduction Information for sustainable utilization of rangeland requires accurate and frequent range assessment . Suchinformation will be obtained from monitoring in the long term ( Watson ２００７ ) which is important for government agencies ,range holders and application of remote sensing ( RS ) and geographic information systems ( GIS ) . Changes in quantitativeparameters , including abundance , vegetation composition , canopy cover and yield , are influenced by climatic conditions andmanagement activities ( Arzani and Abedi ２００６ ) . So distinguishing and separating these is important for better management( Anderson and Holte ,１９８１ ) . The objective of this research was to investigate variation of vegetation parameters in the longterm and to determine trend and severity of changes .Materials and methods Main vegetation communities of １７ provinces were considered . In the key area of each community one sitewas established . Factors including vegetation cover , density , and production along four‐４００ or six‐２００ meter transects within６０ two or one square meter quadrats in arid and semi arid areas were measured . Satellite data collected simultaneously to fielddata was applied .Results and discussion Primary results showed that in arid regions , range ecosystems are in fragile condition . They werecharacterized with low vegetation cover and small production ( Figure １ ) . Desirable species were absent in vegetationcomposition . Biological balance has been lost because of severe grazing . Range condition in semi arid rangeland was better thanarid areas . Moderate species were dominant and vegetation cover percentage and yield was higher ( Figure ２ ) . Integration offield data and satellite data for a period of five years indicated the possibility of range assessment in wide areas using digitaldata .Figure 1 V ariation o f canopy cover and yield inarid rangeland o f I ran (1998‐2005) .Figure 2 V ariation o f canopy cover and y ieldin semi‐arid rangeland o f I ran (1998‐2005) .Conclusions Range assessment in wide areas , with the assistance of digital data is possible . A national monitoring system( NMS) for national data analysis collected in different years and various regions is suggested by the study .ReferencesArzani , H . and M . Abedi , (２００６) , Investigation on the effects of management practices on rangeland health , I ranian J . o fRange and Desert Research , Vol . １３ : １４５‐１６１ .Watson , I . (２００７ ) , Range monitoring , in Range Management Newsletter , A ustralian Rangeland Society , No . ７ /１ , ５‐６ .18 16 14 12 ,t: 10 J 8 8 A\ ~ d I ' --- I\ 1ffi8 19ffi 2CTD 20)1 IKl2 20J3 :ro4 200i 40 700 180 35 600 160 140 30 500 120 25 100 :[ 400 !z 20 00 i 300 60 >- 15 40 200 10 20 100 1380 13 81 1382 1383 1384 1385 

National Rangeland Monitoring and Inventory of Iran

https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=2742&amp;context=igc

National Rangeland Monitoring and Inventory of Iran

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