BEF-China | CSPs: LAI data in spring and summer of 2012

Show: CSPs: LAI data in spring and summer of 2012

Title:

CSPs: LAI data in spring and summer of 2012

Access rights:

Private

Usage rights:

No information available

Published:

Data has not yet been published.

Abstract:

To test the effect of diversity on leaf area index (LAI) we took hemispheric pictures in each CSP in early spring and in summer of 2012. Plots were divided into nine subplots and pictures of the canopy were taken in the center of each subplot, at 1.5m above ground (Nikon D3000 SLR camera, Sigma 4.5mm f/2.8 circular fish-eye lens). Pictures were processed with Hemisfer 2.1, using a weighted ellipsoidal method, a non-linearity correction for slope, and a total observed zenith angle of 75° divided into five rings of 15°.

Design:

In 2008, 27 plots were established. The size of each plot was 30 m x 30 m. Each plot contain 9 subplots. We took hemispheric pictures at the center of each subplot, early in spring and in summer of 2012.

Spatial extent:

Comparative study plots (CSPs) 29°08'-29°17'N 118°02'-118°11'E

Temporal extent:

Early spring and summer of 2012

Taxonomic extent:

Canopy trees

Measurement cirumstances:

No information available

Data analysis:

Plot-level LAI was calculated as the average of LAI estimated from the nine quadrats in spring (LAI.spring) and summer (LAI.summer) . We test the effect of diversity (number of tree species) on LAI.

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Dataset column

Name:

CSP

Definition:

CSP name

Unit:

No information available

Datagroup:

BEF research plot name

Keywords: