Variable:SiteIndexH (SIH) - Revision history

Peder: /* Usage */

2016-02-26T13:39:20Z

Usage

← Older revision		Revision as of 14:39, 26 February 2016
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	==Usage==		==Usage==
	Variable SiteIndexH (SIH) is a computed value for H100, i.e. [[Variable:Dominant_Height\|dominant height]] at an "imagined" age of 100 years. SiteIndexH is only used for presentation purposes and is not used as explanatory variable in any function. To be computed, it requires that ~~the [[Variable:Dominant_Species\|~~dominant species~~}} proportion is~~ at least 70 % of the basal area.		Variable SiteIndexH (SIH) is a computed value for H100, i.e. [[Variable:Dominant_Height\|dominant height]] at an "imagined" age of 100 years. SiteIndexH is only used for presentation purposes and is not used as explanatory variable in any function. To be computed, it requires that a dominant species has at least 70 % of the basal area.

	==Definition==		==Definition==

Peder: /* Definition */

2011-09-01T09:51:46Z

Definition

← Older revision		Revision as of 10:51, 1 September 2011
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	Sweden, Scandinavien Journal of Forest Research 11:38-49. </ref>).		Sweden, Scandinavien Journal of Forest Research 11:38-49. </ref>).

	SiteIndexH is computed as the arithmetic mean height of dominant trees when each of these tree is 100 years old (50 years for birch). ~~For~~ dominant trees ~~younger than~~ 100 years~~, SiteIndexH should be lesser than current dominant Height. For dominant trees~~ 100 years ~~old~~, dominant height and SiteIndeH should be about the same~~. For dominant trees older than 100 years, SiteIndexH should be smaller than current dominant height~~.		SiteIndexH is computed as the arithmetic mean height of dominant trees when each of these tree is 100 years old (50 years for birch). When dominant trees are 100 years old (at a stand age close to 100 years), result variables [[Variable:Dominant_Height \|dominant height]] and SiteIndeH should be about the same.

	==References==		==References==
	<references />		<references />

Peder: /* Definition */

2011-09-01T09:49:37Z

Definition

← Older revision		Revision as of 10:49, 1 September 2011
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	==Definition==		==Definition==
	SiteIndexH is derived from site index equations. The site index equations gives the height ''h'' at age ''a'', given initial height ''h0'' at age ''a0''. For young stands ~~and~~ SiteIndexH could be higher that SIS (site index determined from site factors) (cf. <ref>Elfving B och Nyström K, 1996. Yield Capacity of planted Picea abies in Northern		SiteIndexH is derived from site index equations. The site index equations gives the height ''h'' at age ''a'', given initial height ''h0'' at age ''a0''. For young stands SiteIndexH could be higher that SIS (site index determined from site factors) (cf. <ref>Elfving B och Nyström K, 1996. Yield Capacity of planted Picea abies in Northern
	Sweden, Scandinavien Journal of Forest Research 11:38-49. </ref>). SiteIndexH is computed as the arithmetic mean height of dominant trees when each of these tree is 100 years old (50 years for birch). For dominant trees younger than 100 years, SiteIndexH should be lesser than current dominant Height. For dominant trees 100 years old, dominant height and SiteIndeH should be about the same. For dominant trees older than 100 years, SiteIndexH should be smaller than current dominant height.		Sweden, Scandinavien Journal of Forest Research 11:38-49. </ref>).

			SiteIndexH is computed as the arithmetic mean height of dominant trees when each of these tree is 100 years old (50 years for birch). For dominant trees younger than 100 years, SiteIndexH should be lesser than current dominant Height. For dominant trees 100 years old, dominant height and SiteIndeH should be about the same. For dominant trees older than 100 years, SiteIndexH should be smaller than current dominant height.

	==References==		==References==
	<references />		<references />

Peder at 09:49, 1 September 2011

2011-09-01T09:49:00Z

← Older revision		Revision as of 10:49, 1 September 2011
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	}}		}}

	Variable SiteIndexH (SIH) is a computed value for H100, i.e. [[Variable:Dominant_Height\|dominant height]] at an "imagined" age of 100 years. It is computed by the ~~system,~~ derived from site index equations. The site index equations gives the height ''h'' at age ''a'', given initial height ''h0'' at age ''a0''. For young stands and SiteIndexH could be higher that SIS (site index determined from site factors) (cf. <ref>Elfving B och Nyström K, 1996. Yield Capacity of planted Picea abies in Northern		==Usage==
			Variable SiteIndexH (SIH) is a computed value for H100, i.e. [[Variable:Dominant_Height\|dominant height]] at an "imagined" age of 100 years. SiteIndexH is only used for presentation purposes and is not used as explanatory variable in any function. To be computed, it requires that the [[Variable:Dominant_Species\|dominant species}} proportion is at least 70 % of the basal area.

			==Definition==
			SiteIndexH is derived from site index equations. The site index equations gives the height ''h'' at age ''a'', given initial height ''h0'' at age ''a0''. For young stands and SiteIndexH could be higher that SIS (site index determined from site factors) (cf. <ref>Elfving B och Nyström K, 1996. Yield Capacity of planted Picea abies in Northern
	Sweden, Scandinavien Journal of Forest Research 11:38-49. </ref>). SiteIndexH is computed as the arithmetic mean height of dominant trees when each of these tree is 100 years old (50 years for birch). For dominant trees younger than 100 years, SiteIndexH should be lesser than current dominant Height. For dominant trees 100 years old, dominant height and SiteIndeH should be about the same. For dominant trees older than 100 years, SiteIndexH should be smaller than current dominant height.		Sweden, Scandinavien Journal of Forest Research 11:38-49. </ref>). SiteIndexH is computed as the arithmetic mean height of dominant trees when each of these tree is 100 years old (50 years for birch). For dominant trees younger than 100 years, SiteIndexH should be lesser than current dominant Height. For dominant trees 100 years old, dominant height and SiteIndeH should be about the same. For dominant trees older than 100 years, SiteIndexH should be smaller than current dominant height.

	SiteIndexH is only used for presentation purposes and is not used as explanatory variable in any function. To be computed, it requires that the [[Variable:Dominant_Species\|dominant species}} proportion is at least 70 % of the basal area.

	==References==		==References==
	<references />		<references />

Peder at 09:47, 1 September 2011

2011-09-01T09:47:44Z

← Older revision		Revision as of 10:47, 1 September 2011
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	Variable SiteIndexH (SIH) is a computed value for H100, i.e. [[Variable:Dominant_Height\|dominant height]] at an "imagined" age of 100 years. It is computed by the system, derived from site index equations. The site index equations gives the height ''h'' at age ''a'', given initial height ''h0'' at age ''a0''. For young stands and SiteIndexH could be higher that SIS (site index determined from site factors) (cf. <ref>Elfving B och Nyström K, 1996. Yield Capacity of planted Picea abies in Northern		Variable SiteIndexH (SIH) is a computed value for H100, i.e. [[Variable:Dominant_Height\|dominant height]] at an "imagined" age of 100 years. It is computed by the system, derived from site index equations. The site index equations gives the height ''h'' at age ''a'', given initial height ''h0'' at age ''a0''. For young stands and SiteIndexH could be higher that SIS (site index determined from site factors) (cf. <ref>Elfving B och Nyström K, 1996. Yield Capacity of planted Picea abies in Northern
	Sweden, Scandinavien Journal of Forest Research 11:38-49. </ref>). SiteIndexH is computed as the arithmetic mean height of dominant trees when each of these tree is 100 years old (50 years for birch). For dominant trees younger than 100 years, SiteIndexH should be lesser than current dominant Height. For dominant trees 100 years old, dominant height and SiteIndeH should be about the same. For dominant trees older than 100 years, SiteIndexH should be smaller than current dominant height.		Sweden, Scandinavien Journal of Forest Research 11:38-49. </ref>). SiteIndexH is computed as the arithmetic mean height of dominant trees when each of these tree is 100 years old (50 years for birch). For dominant trees younger than 100 years, SiteIndexH should be lesser than current dominant Height. For dominant trees 100 years old, dominant height and SiteIndeH should be about the same. For dominant trees older than 100 years, SiteIndexH should be smaller than current dominant height.

			SiteIndexH is only used for presentation purposes and is not used as explanatory variable in any function. To be computed, it requires that the [[Variable:Dominant_Species\|dominant species}} proportion is at least 70 % of the basal area.

	==References==		==References==
	<references />		<references />

Peder at 09:27, 1 September 2011

2011-09-01T09:27:20Z

← Older revision		Revision as of 10:27, 1 September 2011
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	}}		}}

	Variable SiteIndexH (SIH) is an computed value for H100, i.e. [[Variable:Dominant_Height\|dominant height]] at ~~a stand~~ age of 100 years. It is computed by the system, derived from site index equations. The site index equations gives the height ''h'' at age ''a'', given initial height ''h0'' at age ''a0''. For young stands, SiteIndexH ~~it is often~~ higher that SIS (site index determined from site factors) (cf. <ref>Elfving B och Nyström K, 1996. Yield Capacity of planted Picea abies in Northern		Variable SiteIndexH (SIH) is a computed value for H100, i.e. [[Variable:Dominant_Height\|dominant height]] at an "imagined" age of 100 years. It is computed by the system, derived from site index equations. The site index equations gives the height ''h'' at age ''a'', given initial height ''h0'' at age ''a0''. For young stands and SiteIndexH could be higher that SIS (site index determined from site factors) (cf. <ref>Elfving B och Nyström K, 1996. Yield Capacity of planted Picea abies in Northern
	Sweden, Scandinavien Journal of Forest Research 11:38-49. </ref>). SiteIndexH is computed as the arithmetic mean height of dominant trees when ~~the stand mean age~~ is 100 years (50 years for birch)~~, computed for each tree separately though~~. For trees younger than 100 years, SiteIndexH For dominant trees older than 100 years, SiteIndexH ~~will~~ be smaller than current dominant height.		Sweden, Scandinavien Journal of Forest Research 11:38-49. </ref>). SiteIndexH is computed as the arithmetic mean height of dominant trees when each of these tree is 100 years old (50 years for birch). For dominant trees younger than 100 years, SiteIndexH should be lesser than current dominant Height. For dominant trees 100 years old, dominant height and SiteIndeH should be about the same. For dominant trees older than 100 years, SiteIndexH should be smaller than current dominant height.

	==References==		==References==
	<references />		<references />

Peder: Created page with '{{ForestInputData |description = SiteIndexH (SIH) |I_O = Output variable (prognosis) |type = real |membership = Treatment unit |unit_values = (m) |d�?�'

2011-09-01T09:10:13Z

Created page with '{{ForestInputData |description = SiteIndexH (SIH) |I_O = Output variable (prognosis) |type = real |membership = Treatment unit |unit_values = (m) |d�?�'

New page

{{ForestInputData
|description = SiteIndexH (SIH)
|I_O = Output variable (prognosis)
|type = real
|membership = [[Definition:Treatment unit|Treatment unit]]
|unit_values = (m)
|database = dbo.Result_ForestData
}}

Variable SiteIndexH (SIH) is an computed value for H100, i.e. [[Variable:Dominant_Height|dominant height]] at a stand age of 100 years. It is computed by the system, derived from site index equations. The site index equations gives the height ''h'' at age ''a'', given initial height ''h0'' at age ''a0''. For young stands, SiteIndexH it is often higher that SIS (site index determined from site factors) (cf. <ref>Elfving B och Nyström K, 1996. Yield Capacity of planted Picea abies in Northern
Sweden, Scandinavien Journal of Forest Research 11:38-49. </ref>). SiteIndexH is computed as the arithmetic mean height of dominant trees when the stand mean age is 100 years (50 years for birch), computed for each tree separately though. For trees younger than 100 years, SiteIndexH For dominant trees older than 100 years, SiteIndexH will be smaller than current dominant height.

==References==
<references />