Parent Layer: Environmental

Name: SoilSalinity0_50cm

Display Field: NAME

Type: Feature Layer

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Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Evaluation of salinity in the first and second 50cm of the soil horizon respectively was based on electrical conductivity of the soil. Electrical conductivity is a measure of the concentration of water-soluble salts in soils. It is used to indicate the soil salinity level. High concentrations of neutral salts, such as sodium chloride and sodium sulfate, may interfere with the absorption of water by plants because the osmotic pressure in the soil solution is nearly as high as or higher than that in the plant cells. Salts may also interfere with the exchange capacity of nutrient ions, thereby resulting in nutritional deficiencies in plants. The EC values measured by soil surveyors (EC 1:1) at each soil horizon at each field site were used to calculate an average EC value (weighted for horizon thickness) for the first two 50cm layers of soil at each site. That EC value was converted to ECe by multiplying by a factor of 3. These values were used to find the median ECe value for the 0-50cm layer and 50-100cm layer for each soil component. || تم تقييم ملوحة أول 50 سم وثاني 50 سم من أفق التربة بناءً على التوصيل الكهربائي للتربة. التوصيل الكهربائي هو مقياس لتركيز الأملاح القابلة للذوبان في الماء في التربة. يُستخدم للإشارة إلى مستوى ملوحة التربة. قد تتداخل التركيزات العالية من الأملاح المحايدة، مثل كلوريد الصوديوم وكبريتات الصوديوم، مع امتصاص النباتات للماء لأن الضغط الأسموزي في محلول التربة يكون قريبًا أو أعلى من ذلك الموجود في خلايا النبات.</SPAN></P><P><SPAN /></P><P><SPAN>قد تتداخل الأملاح أيضًا مع سعة تبادل أيونات المغذيات، مما يؤدي إلى نقص تغذية النباتات. تم استخدام قيم التوصيل الكهربائي التي قاسها مسّاحو التربة (EC 1:1) عند كل أفق تربة في كل موقع حقلي لحساب قيمة متوسطة للتوصيل الكهربائي (مرجحة حسب سمك الأفق) لأول طبقتين بسمك 50 سم من التربة في كل موقع.</SPAN></P><P><SPAN /></P><P><SPAN>تم تحويل تلك القيمة إلى ECe عن طريق الضرب في عامل 3. استخدمت هذه القيم لحساب القيمة المتوسطة ECe لطبقة 0-50 سم وطبقة 50-100 سم لكل مكون من مكونات التربة</SPAN></P></DIV></DIV></DIV>

Service Item Id: ba21abc1720746d988deb9d36df68419

Copyright Text: Created by Environment Agency Abu Dhabi as part of the Abu Dhabi Soil Survey project. Data Origin:EAD.

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YMin: 22.643029987000034
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HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• NAME ( type: esriFieldTypeString, alias: Name, length: 50 )
• CATEGORY ( type: esriFieldTypeString, alias: Category, length: 50 , Coded Values: [Non saline: Non saline] , [Not mapped: Not mapped] , [Strongly saline: Strongly saline] , ...1 more... )
• RATING ( type: esriFieldTypeDouble, alias: Rating )
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