NDLI: Spatial patterns in mixed coniferous even-aged, uneven-aged and conversion stands

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Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch : Volume 123, Issue 1, April 2004

Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch : Volume 122

Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch : Volume 121

Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch : Volume 120

Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch : Volume 119

Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch : Volume 118

Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch : Volume 117

Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch : Volume 116

Spatial patterns in mixed coniferous even-aged, uneven-aged and conversion stands

Content Provider	Springer Nature Link
Author	Hanewinkel, Marc
Copyright Year	2004
Abstract	Different methodological approaches from the field of spatial statistics, the index of cluster size (ICS) and quadrat methods such as the two-term and three-term local quadrat variance (TTLQV and 3TLQV) and the new local variance (NLV) were tested to find a simple spatial measure to classify mixed coniferous uneven-aged, even-aged and conversion stands in the central Black Forest area of Germany. Altogether six stands were analysed with regularly distributed sample plots of 0.25 ha (50×50 m), each subdivided into 25 quadrats of 10×10 m. In each of the quadrats, diameter at breast height (dbh) for trees of the overstory (dbh>7 cm) was assessed and classified into three diameter classes. Height measurements were used to develop specific stand height curves for each stand and to calculate the standing volume per tree and per quadrat. The even-aged stands showed a regular distribution of the standing volume, while the conversion and uneven-aged stands were more clustered. This was detected using ICS, which proved to be a simple but very efficient measure for stand structure. The ICS also showed a highly random distribution of small and medium trees and a regular distribution of large trees of the overstory in the uneven-aged stand. Large and medium trees of one even-aged stand were also regularly distributed while conversion stands showed a regular, random or slightly clustered distribution of these trees. The more uneven the ages in the stands were, the larger were the phases detected by the NLV. The findings of the ICS were generally supported by the TTLQV and 3TLQV. The more uneven the ages in a stand were, the less clustered were the trees of different sizes of the understory. Clustering also decreased with increasing height of understory trees. The patterns detected in the investigated stands were related to the effect of different management regimes. Implications for the management of conversions stands based on the findings of the study are given.
Starting Page	139
Ending Page	155
Page Count	17
File Format	PDF
ISSN	16124669
Journal	Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch
Volume Number	123
Issue Number	2
e-ISSN	16124677
Language	English
Publisher	Springer-Verlag
Publisher Date	2004-07-10
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Spatial analysis Index of cluster size Quadrat variances Conversion stands Uneven-aged forests
Content Type	Text
Resource Type	Article
Subject	Plant Science Forestry

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