کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6310129 | 1307460 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phosphine in paddy fields and the effects of environmental factors
ترجمه فارسی عنوان
فسفین در زمینه های سرسبز و اثرات عوامل محیطی
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
Ambient levels of phosphine (PH3) in the air, phosphine emission fluxes from paddy fields and rice plants, and the distribution of matrix-bound phosphine (MBP) in paddy soils were investigated throughout the growing stages of rice. The relationships between MBP and environmental factors were analyzed to identify the principal factors determining the distribution of MBP. The phosphine ambient levels ranged from 2.368 ± 0.6060 ng mâ3 to 24.83 ± 6.529 ng mâ3 and averaged 14.25 ± 4.547 ng mâ3. The highest phosphine emission flux was 22.54 ± 3.897 ng (m2 h)â1, the lowest flux was 7.64 ± 4.83 ng (m2 h)â1, and the average flux was 14.17 ± 4.977 ng (m2 h)â1. Rice plants transport a significant portion of the phosphine emitted from the paddy fields. The highest contribution rate of rice plants to the phosphine emission fluxes reached 73.73% and the average contribution was 43.00%. The average MBP content of 111.6 ng kgâ1fluctuated significantly in different stages of rice growth and initially increased then decreased with increasing depth. The peak MBP content in each growth stage occurred approximately 10 cm under the surface of paddy soils. Pearson correlation analyses and stepwise multiple regression analysis showed that soil temperature (Ts), acid phosphatase (ACP) and total phosphorus (TP) were the principal environmental factors, with correlative rankings of Ts > ACP > TP.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 93, Issue 9, November 2013, Pages 1942-1947
Journal: Chemosphere - Volume 93, Issue 9, November 2013, Pages 1942-1947
نویسندگان
Xiaojun Niu, Aishu Wei, Yadong Li, Lina Mi, Zhiquan Yang, Xiaofei Song,