stion 18 5.00000 points Save Answer In many parts of the world saline soils are
ID: 303463 • Letter: S
Question
stion 18 5.00000 points Save Answer In many parts of the world saline soils are the result of human activities. In North Dakota and Western Minnesota, saline soils have developed naturally as a result of characteristics of the regions geology and the location of ground water tables. The figure on the left below shows a cross-section of the geologic features that are found in Grand Forks County. In this area, ground water is forced close to the soil surface by underlying bedrock When the ground water table is shallow, water containing natural salts can be drawn to surface by capillary action (water molecules being pulled upward by adhesive and cohesive forces) As the water reaches the surface, it evaporates, leaving the salt ions behind. The map on the right shows the locations of saline soill problems in Eastern North Dakota Explain why saline soils can cause plant symptoms that are similar to the symptoms of moisture stress from dry conditions. Be sure to describe how saline in the soil affects water potential. Cretace Saline Soils Fiure 4 The geobe cross vecton of Grand ForkaExplanation / Answer
saline soils are soil in which top soils are impregnated and saturated with salts like sodium,magnesium,calsium salts are called as saline soils.The area with poor drainage system that is water with higt salt concentrations become stagnated and evoparation leads to deposition of all salts on the top soil that leads to adverse effects on plant life and sorrounding environment conditions.
High salinity creates conditions similar to arid area that moisture stress from dry area beacuse high concentration of salts creates osmatic strees due to difference in the salt level in plant roots and external environment that leads to decreased absobtion of water through root hairs as a result it affect on plants growth,it also reduces the fertility of soil, choice of crops become limited just like moisture stress areas(arid),quality and quantity of fodder effected
saline soils not only effects plant life and biodiversity it also influence on water potential.High concentration of salts leads movement of water from ground level to top soil due to capillary action leads to evoparation effects on gound water table levels that ultimately decreases the availabity of water for the plants and environment on prolonged time leads to desertification of soils.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.