دورية أكاديمية
The Effect of Urban Sewage Sludge on Chemical Properties, Soil Basal Respiration and Microbial Biomass Carbon in a Calcareous Silty Clay Loam Soil
| العنوان: | The Effect of Urban Sewage Sludge on Chemical Properties, Soil Basal Respiration and Microbial Biomass Carbon in a Calcareous Silty Clay Loam Soil |
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| المؤلفون: | Sh. Ghorbani Dashtaki, N. Karimian, F. Raeisi |
| المصدر: | علوم آب و خاک, Vol 21, Iss 1, Pp 255-264 (2017) |
| بيانات النشر: | Isfahan University of Technology, 2017. |
| سنة النشر: | 2017 |
| المجموعة: | LCC:Agriculture LCC:Agriculture (General) |
| مصطلحات موضوعية: | basal respiration, microbial biomass carbon, soil water repellency, urban sewage sludge, Agriculture, Agriculture (General), S1-972 |
| الوصف: | The use of organic matter such as urban sewage sludge may help sustainable soil fertility via improving the physical, chemical and biological soil characteristics. The main purpose of this study was to determine the effect of urban sewage sludge on chemical properties, soil basal respiration and microbial biomass carbon in a calcareous soil with silty clay loam texture. Therefore, three levels of water repellency (zero, weak and strong) were artificially created in a silty clay loam soil by adding urban sewage sludge (S0=0:100; S50=50:50 and S80=80:20 sludge weight: soil ratio). Water repellency was determined by water drop penetration time (WDPT) method. Also some chemical properties such as soil acidity (pH) and Electrical Conductivity (EC), Soil Organic Carbon (OC), soluble sodium (Na+) and soluble potassium (K+) were measured. The samples were incubated at 23-25 ºC for 30 days and their moisture was maintained at 70-80 % under field capacity and soil basal respiration and microbial biomass carbon of incubation period were evaluated. The results showed that the effect of urban sewage sludge on chemical properties was significant (P ≤0.0001). The application of urban sewage sludge led to significant increase in basal respiration (16 and 27 times) and microbial biomass carbon (15.2 and 26.5 times) in the water repellency soils (S50 and S80) compared to control soil. The observed positive effect of sewage sludge might be due to a high content of organic carbon and nutrients in urban sewage sludge and decrease in the labile organic matter and nutrients during incubation period. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | Persian |
| تدمد: | 2476-3594 2476-5554 |
| العلاقة: | http://jstnar.iut.ac.ir/article-1-3225-en.htmlTest; https://doaj.org/toc/2476-3594Test; https://doaj.org/toc/2476-5554Test |
| الوصول الحر: | https://doaj.org/article/2bc08ea75e484ddfae939efbc8b5c0c9Test |
| رقم الانضمام: | edsdoj.2bc08ea75e484ddfae939efbc8b5c0c9 |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 24763594 24765554 |
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