بررسي توانايي گياه‌پالايي گونه‌هاي مرتعي به خاك هاي آلوده به مس و منگنز

Investigation of Phytoremediation Ability of Rangeland Species in Soils Contaminated with Copper and Manganese

اﯾﻦ ﺗﺤﻘﯿﻖ ﺑﺎ ﻫﺪف ارزﯾﺎﺑﯽ ﻣﯿﺰان آﻟﻮدﮔﯽ ﺧﺎكﻫﺎي اﻃﺮاف ﻣﺮاﺗﻊ ﻗﻠﻌﻪ ﻣﺤﻤﺪﻋﻠﯽﺧﺎن ﺷﻬﺮﺳﺘﺎن ري )در ﻓﺎﺻﻠﻪ 78 ﮐﯿﻠﻮﻣﺘﺮي ﺟﺎده ﺗﻬﺮان-ﻗﻢ( و ﻫﻤﭽﻨﯿﻦ ﺷﻨﺎﺳﺎﯾﯽ ﮔﻮﻧﻪﻫﺎي ﺑﻮﻣﯽ ﻣﻨﺎﺳﺐ ﺑﺮاي ﮔﯿﺎهﭘﺎﻻﯾﯽ در ﺧﺎكﻫﺎي آﻟﻮده ﺑﻪ ﻓﻠﺰات ﺳﻨﮕﯿﻦ ﻣﺲ و ﻣﻨﮕﻨﺰ، در ﻗﺎﻟﺐ ﻃﺮح ﮐﺎﻣﻼً ﺗﺼﺎدﻓﯽ، در دو ﺟﻬﺖ ﻣﻮاﻓﻖ و ﻣﺨﺎﻟﻒ ﺑﺎد ﻏﺎﻟﺐ اﺟﺮا ﮔﺮدﯾﺪ. از ﺧﺎك، اﻧﺪام ﻫﻮاﯾﯽ و زﯾﺮزﻣﯿﻨﯽ ﮔﯿﺎﻫﺎن ﻣﺮﺗﻌﯽ از 10 ﺳﺎﯾﺖ اﻃﺮاف ﻣﻌﺪن ﻣﺲ ﺟﺎده ﻗﻢ – ﺟﻨﻮب ﺗﻬﺮان )5 ﺳﺎﯾﺖ در ﺟﻬﺖ ﺑﺎد ﻏﺎﻟﺐ و 5 ﺳﺎﯾﺖ در ﺧﻼف ﺟﻬﺖ ﺑﺎد ﻏﺎﻟﺐ( ﻧﻤﻮﻧﻪﻫﺎﯾﯽ ﺟﻤﻊآوري ﺷﺪ. ﻧﻤﻮﻧﻪﻫﺎي ﮔﯿﺎﻫﺎن در ﻫﺮ ﺳﺎﯾﺖ از 3 ﻧﻘﻄﻪ ﻣﺮﮐﺰي، ﮔﻮﺷﻪ ﺑﺎﻻ و ﭘﺎﯾﯿﻦ و در داﺧﻞ ﭘﻼت ﯾﮏﻣﺘﺮﻣﺮﺑﻌﯽ و ﻧﻤﻮﻧﻪﻫﺎي ﺧﺎك از داﺧﻞ ﻫﻤﯿﻦ ﭘﻼتﻫﺎ از ﻋﻤﻖ رﯾﺸﻪدواﻧﯽ ﺑﺮداﺷﺘﻪ ﺷﺪﻧﺪ و ﻏﻠﻈﺖ ﻓﻠﺰات ﺳﻨﮕﯿﻦ ﻣﺲ و ﻣﻨﮕﻨﺰ( ﺗﻮﺳﻂ دﺳﺘﮕﺎه ICP-OES ﻗﺮاﺋﺖ ﮔﺮدﯾﺪ. ﺑﺮ ﻃﺒﻖ ﻧﺘﺎﯾﺞ، ﻏﻠﻈﺖ ﻓﻠﺰات ﻣﺲ و ﻣﻨﮕﻨﺰ در ﻣﻨﺎﻃﻖ 10 ﮔﺎﻧﻪ در ﺟﻬﺖ ﺑﺎد ﻏﺎﻟﺐ و ﺧﻼف ﺟﻬﺖ ﺑﺎد ﻏﺎﻟﺐ داراي ﻏﻠﻈﺖﻫﺎي ﻣﺘﻔﺎوﺗﯽ ﺑﻮدﻧﺪ. ﻏﻠﻈﺖ ﻣﺲ در ﺷﺎﺧﺴﺎره ﮔﯿﺎﻫﺎن )2/01( در ﻫﺮ دو ﺟﻬﺖ ﺑﺎد ﺑﯿﺶﺗﺮ از اﻧﺪامﻫﺎي زﯾﺮزﻣﯿﻨﯽ )1/19( ﺑﻮد. ﺑﻪ ﻋﺒﺎرﺗﯽ، ﻓﺎﮐﺘﻮر اﻧﺘﻘﺎل در ارﺗﺒﺎط ﺑﺎ ﻓﻠﺰ ﻣﺲ ﺑﺰرﮔﺘﺮ از ﯾﮏ ﺑﻮد. اﯾﻦ اﻣﺮ ﻧﺸﺎن ﻣﯽدﻫﺪ ﮐﻪ ﺑﻪ اﺣﺘﻤﺎل زﯾﺎد ﺑﺘﻮان اﯾﻦ ﮔﯿﺎﻫﺎن را ﺑﻪ ﻋﻨﻮان ﺑﯿﺶاﻧﺪوز ﻣﺲ در ﻧﻈﺮ ﮔﺮﻓﺖ. ﺑﻨﺎﺑﺮاﯾﻦ، اﯾﻦ ﮔﯿﺎﻫﺎن

This study was carried out to evaluate the amount of soil contamination in Qaleh Mohammad-Ali-Khan (Ray city) rangelands and also to identify the phytoremediation ability of native species in soil contaminated with copper (Cu) and manganese (Mn) based on a completely randomized design in the dominant and opposite wind direction. Soil samples, shoot and root samples of rangeland plants were collected from 10 sites around the mine (5 sites in the dominant wind direction and 5 sites in the opposite wind direction). Soil and plant samples were extracted by oxidation method and the copper and manganese concentrations were analyzed by ICP.Concentrations of heavy metals of Cu and Mn in the direction and opposite direction of the dominant wind have different concentrations, so that the plots located near the mine have a higher concentration of heavy metals. Cu concentration in the shoots of plants (2.01) in both direction was greater than that of the roots (1.19) that means the TF value was greater than one (TF>1). Therefore, they can be an appropriate choice for the phytoremediation of Cu-contaminated soils. Thus, these native plants have an implication of carrying out phytoremediation in the rangeland soils.