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| Estimation and analysis of emissions from agricultural non-point source pollution in Xinjiang |
| Received:November 18, 2016 |
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| KeyWord:agricultural non-point source pollution;emission load;estimate;Xinjiang |
| Author Name | Affiliation | E-mail | | ZHOU Xiao-qin | College of Agriculture, Shihezi University, Shihezi 832003, China | | | YANG Le | College of Agriculture, Shihezi University, Shihezi 832003, China | yl_shzu@163.com | | YANG Ling-fei | College of Agriculture, Shihezi University, Shihezi 832003, China | |
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| Abstract: |
| The objective of this study was to analyze the current situation and characteristics of agricultural non-point source (ANPS) pollution in Xinjiang.This case study considered pollutant emissions from cropland,as well as those from livestock and poultry production.Pollutant emissions from ANPS were estimated using the source intensity coefficient method,based on farming statistics between 2005 and 2014 and the First National Pollution Source Census.The results showed that the emission of ANPS pollution increased annually.The total discharge of ANPS was 1.39×105 t in 2014.Cropland accounted for 44.78% of the emissions,whereas livestock and poultry production accounted for 55.22%.Chemical oxygen demand (COD) and total nitrogen (TN) were the main pollutants,accounting for 49.2% and 47% of the total,respectively.Cattle and dryland crop production were the largest contributors to ANPS pollution,accounting for 55.34% of COD and 80.13% of TN.The ANPS pollution exhibited significant spatial distribution patterns in Xinjiang.The main areas contributing to ANPS pollution were the Ili Kazak Autonomous Prefecture,the Xinjiang Production and Construction Corps,the Kashi Prefecture,the Changji Hui Autonomous Prefecture,and the Aksu Prefecture. |
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