"පොකුණ" හි සංශෝධන අතර වෙනස්කම්

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12 පේළිය:
 
පොකුණක් යනු ජලයෙන් පිරුණු ස්ථානයක් වන අතර මෙය [[විල|විලකට]] වඩා කුඩා වේ.
 
==Nomenclature==
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[[Image:Winter December 2007 with Pond.jpg|thumb|Pond in winter]]
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[[Image:2007 0731klklk0039.JPG|thumb|right|An Australian rock pond. [[Heathcote National Park]]]]
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[[Image:Long Pond - St Regis.jpg|thumb|338 acre Long Pond in the [[Saint Regis Canoe Area]] in the [[Adirondacks]]]]
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[[Image:pondfishs.jpg|thumb|Artificial pond stocked with pond fish]]
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In origin, pond is a variant form of the word pound, meaning a confining enclosure. As straying cattle are enclosed in a pound so water is enclosed in a pond. In earlier times, ponds were man-made and utilitarian; as stew ponds, mill ponds and so on. The significance of this feature seems in some cases, to have been lost when the word was carried abroad with emigrants so that in places like the United States, natural pools are often called ponds. <ref>Oxford English Dictionary</ref>
 
A pond is sometimes characterized as being a small body of water that is shallow enough for sunlight to reach the bottom, permitting the growth of rooted plants at its deepest point. <ref> But [[Mere (lake)|mere]] may be thought a better term for this.</ref>
 
''Pond'' usually implies a quite small body of water, generally smaller than one would require a boat to cross. Another definition is that a pond is a body of water where even its deepest areas are reached by sunlight or where a human can walk across the entire body of water without being submerged. In some dialects of [[English language|English]], pond normally refers to small artificially created bodies of water.
 
Though not generally accepted, some regions of the [[United States]] define a pond as a body of water with a surface area of less than 10 acres (40,000 m²).{{fact|date=June 2008| This definition must be peculiar to the United States because of the use of 'acre'. A brief web search found no source for the definition. A source should be cited or the definition removed }}
 
Regional differences include the use of the word pond in New England, and Maine in particular, for relatively large water bodies. For example, [[Great Pond]], Maine is over 10 square miles (26 km²) in area.<ref>This appears to be, in its present form at least, artificially dammed. It is therefore a pond in the original sense of the word.</ref>
 
In areas which were covered by [[glacier]]s in the past, some ponds were created when the glaciers retreated. These ponds are known as [[Kettle (geology)|kettle ponds]]. [[Walden Pond]] in Concord, Massachusetts is a well known example. Kettle ponds are usually quite deep and clean because they are fed by underground aquifers rather than surface streams.
 
The term is also used for temporary accumulation of water from [[surface runoff]] (''ponded'' water).
 
There are various regional names for naturally occurring ponds. In [[Scotland]], one of the terms is [[loch]]an, which may also apply to a large body of water such as a lake.
 
The word "pond" is sometimes also used to refer to the [[Atlantic Ocean]] in the expression "across the pond", and the expression "big pond" similarly is sometimes used for the [[Pacific Ocean|Pacific]]. These uses are deliberate [[idiom]]atic [[understatement]]s.
 
Ponds' calm waters are ideal for [[insects]] and other water dwelling [[invertebrates]]. This includes the [[pondskater]], the [[water boatman]], the [[diving beetle]], the [[whirligig beetle]] and the [[water scorpion]].
 
==Characteristics==
Typically, a pond has no surface outflow draining off water and ponds are often [[spring (hydrosphere)|spring]]-fed. Hence, because of the closed environment of ponds, such small bodies of water normally develop self contained [[eco-system]]s. Ponds in heavily vegetated areas also display the formation of "[[wiktionary:scum|scum]]", which is a common term for dead and decaying [[vegetation]] condensing on top of the water. A contributor to this is the presence of [[algae]], which multiply quickly in a nutrient-rich [[Eutrophication|eutrophic]] pond exposed to strong daylight. Decaying flora provide significant amounts of such nutrients.
 
==Uses==
In the Indian subcontinent, [[Hindu]] [[temples]] usually have a pond nearby so that pilgrims can take baths. These ponds are considered sacred. In [[medieval]] times in [[Europe]], it was typical for many [[monastery|monasteries]] and [[castle]]s (small, partly self-sufficient communities) to have [[fish pond]]s. These are still common in Europe and in [[East Asia]] (notably [[Japan]]), where [[koi]] may be kept.
 
Another use is in agriculture. In agriculture, [[treatment pond]]s combined with irrigation [[reservoir]]s are used as a [[Water purification|self-purifying]] irrigation reservoir to allow irrigation at times of drought.
 
'''Tobha''' is [[Punjabi language|Punjabi]] name for village pond. Every village in [[Punjab (India)]] essentially has a pond, into which the drainage of village is forced. [[Bovinae|Buffalo]]'s and other village animals take bath in village pond during summers. Tobha is really an object of entertainment for [[village]] people, where children also learn to [[swim]] and play.
 
The small pond in [[bog]] or mountain is called {{nihongo|"[[:ja:池塘|池塘]]"|chitō}} in [[Japan]] and is discriminate from the pond in the [[plain]] and widely recognized by [[mountaineer]] or [[mountaineering]] people.
 
==Examples==
Thousands of examples worldwide are available to illustrate the pond; a few of these are:
*[[Antonelli Pond]], [[California]], [[USA]]
*[[Big Pond, Nova Scotia]]
*[[Christian Pond]], [[Wyoming]], [[USA]]
*[[Hampstead Ponds]], [[England]]
*[[Oguni-numa Pond]], [[Japan]]
*[[Pete's Pond]], [[Botswana]]
*[[Rožmberk Pond]], [[Czech Republic]]
*[[Rajewicz Pond]], [[Poland]]
 
==See also==
"https://si.wikipedia.org/wiki/පොකුණ" වෙතින් සම්ප්‍රවේශනය කෙරිණි