A Method for Estimating Deciduous Competition in Pine Stands Using Landsat

被引：18

作者：

Blinn, Christine E. ^{[1
]}

Albaugh, Timothy J. ^{[2
]}

Fox, Thomas R. ^{[1
]}

Wynne, Randolph H. ^{[1
]}

Stape, Jose L. ^{[2
]}

Rubilar, Rafael A. ^{[3
]}

Allen, H. Lee ^{[2
]}

机构：

[1] Virginia Polytech Inst & State Univ, Dept Forest Resources & Environm Conservat, Blacksburg, VA 24061 USA

[2] N Carolina State Univ, Dept Forestry & Environm Resources, Raleigh, NC 27695 USA

[3] Univ Concepcion, Concepcion, Chile

来源：

SOUTHERN JOURNAL OF APPLIED FORESTRY | 2012年 / 36卷 / 02期

关键词：

remote sensing; silviculture; vegetation control; loblolly pine; LEAF-AREA INDEX; LOBLOLLY-PINE; VEGETATION CONTROL; PLANTATIONS; MIDROTATION; GROWTH; FERTILIZATION; NUTRITION; DYNAMICS; NUTRIENT;

D O I：

10.5849/sjaf.10-034

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

A method for identifying pine plantations that may require vegetation control using remotely sensed imagery is presented. Landsat satellite images are used to estimate the leaf area index (LAI) of competing deciduous vegetation by subtracting winter LAI from spring LAI. This differencing works because pine leaf area increases relatively little in comparison with deciduous vegetation between winter and early spring. Competing vegetation LAI levels were compared before and after midrotation release treatments to measure the success of the release treatments. The LAI differencing method estimates the relative abundance of competing vegetation in pine stands and was successful at measuring a reduction in competition levels after release treatments. Midrotation stands prior to release treatments were found to have levels of competing vegetation leaf area equivalent to stands that had never received vegetation control treatments and lower levels of competing vegetation after release treatments.

引用

页码：71 / 78

页数：8

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