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首页> 外文期刊>International Journal of Scientific World >Effect of soil physico-chemical properties and plant type on bacterial diversity in semi- arid parts in central Sudan. Part ii. Sharq El-neel region, Khartoum state
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Effect of soil physico-chemical properties and plant type on bacterial diversity in semi- arid parts in central Sudan. Part ii. Sharq El-neel region, Khartoum state

机译：土壤理化性质和植物类型对苏丹中部半干旱地区细菌多样性的影响。第二部分喀土穆州Sharq El-neel地区

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Total viable counts of bacteria and bacterial diversity of the different soil samples from three different localities in Sharq EL-Neel region: Soba, AL-Aelafoon and Um Dawan Ban sub-regions were carried out. Soil physical and chemical characteristics (pH, EC,SP,solublecations: Na, K, Ca, Mg and anion P, organic carbon, total nitrogen and soil texture)in each studied sub-regions were measured. Qualitative analysis of microorganisms isolated from the studied soil samples reveal a total of thirteendifferent species of bacteria, of which two are unidentified. The ten species are classified under Bacillus genus. In Sharq EL-Neel regionsoil samples, total bacterial counts ranged from 9.5 × 10 4 cfu g -1 to 1×10 3 with a mean of 4×10 3 cfu g -1 . The quantitative data on microbial population recorded in the present study was analysed using two diversity indices. High Shannon-Weiner diversity Index value for bacteria was obtained in AL-Aelfoon sub-region (1.79361), whereas high Simpson's index value was obtained in Um Dawan Ban sub-region (2.80).ActinomycesActinomyces spp. and Streptomyces spp. Where the most abundant microorganisms identified in the three sub-regions. Total bacterial count in Soba soil was positively correlated with pH (r= 0.0194) and sand (r= 0.3205); the total bacterial count in AL-Aelafoon soilwas positively correlated with EC (r= 0.1062), clay (r= 0.3816), silt (r= 0.1936), SP (r= 0.9302), K (r= 0.6252), Ca (r= 0.0015) and Mg (r= 0.1556), whereas the total bacterial count in Um Dawan Ban soil was positively correlated with clay (r= 0.2614), silt (r= 0.0216), SP (r= 0.565), K (r= 0.9645), P (r= 0.0197), Ca (r= 0.7377), Mg (r= 0.0267), N (r= 0.5215) and O.C (r= 0.3214). There were obvious differences in correlation coefficients among the selected criteria (46 % from the total number of correlation coefficients were positively correlated between bacterial counts and soil physico-chemical properties whereas 54% from the total number were positively correlated between plant type and bacterial counts).
机译：进行了沙克EL-尼尔地区（Soba，AL-Aelafoon和Um Dawan Ban子地区）三个不同地方的不同土壤样品中细菌的总存活数和细菌多样性。测量了每个研究区域的土壤理化特性（pH，EC，SP，可溶性阳离子：Na，K，Ca，Mg和阴离子P，有机碳，总氮和土壤质地）。从所研究的土壤样品中分离出的微生物的定性分析揭示了总共13种不同的细菌，其中2种尚未鉴定。十种被归类为芽孢杆菌属。在Sharq EL-Neel地区的土壤样本中，细菌总数从9.5×10 4 cfu g -1到1×10 3，平均值为4×10 3 cfu g -1。使用两个多样性指标分析了本研究中记录的微生物种群的定量数据。在AL-Aelfoon次区域（1.79361）获得了较高的细菌Shannon-Weiner多样性指数值，而在Um Dawan Ban次区域（2.80）获得了较高的辛普森指数值。和链霉菌属。在三个子区域中识别出最丰富的微生物。荞麦土壤中细菌总数与pH（r = 0.0194）和沙子（r = 0.3205）呈正相关。 AL-Aelafoon土壤中的细菌总数与EC（r = 0.1062），粘土（r = 0.3816），淤泥（r = 0.1936），SP（r = 0.9302），K（r = 0.6252），Ca（r = 0.0015）和Mg（r = 0.1556），而Um Dawan Ban土壤中的细菌总数与粘土（r = 0.2614），淤泥（r = 0.0216），SP（r = 0.565），K（r = 0.9645），P（r = 0.0197），Ca（r = 0.7377），Mg（r = 0.0267），N（r = 0.5215）和OC（r = 0.3214）。所选标准之间的相关系数存在明显差异（相关系数总数中46％与细菌数量和土壤理化性质呈正相关，而总数总数中54％与植物类型与细菌数量之间呈正相关） 。

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