BEFmod: Wild tree and shrub measurement within the integrated BEFmod experiment - Site B

Usage Rights

This data is Private.

Dataset Abstract

Recent studies have shown the positive effect of diversity on primary productivity. Here we investigated this diversity-productivity relationship between the established tree richness gradient in the main experiment and the naturally occurring tree and shrub layer. Moreover, we made use of the integrated BEFmod experiment arranged along a tree species richness gradient at site A and B, with subplot treatments of phosphorus addition, insecticides addition, fungicide addition, herb layer weeding and no weeding, to compare this relationship among three different manipulated environmental settings.

Dataset Design

In all plots in BEF-China (including C, P, F and I treatment) the herb layer has been continuously weeded twice a year, (since 2009 and 2010, for site A and site B, respectively) and since 2014 once a year on both sites to increase the establishment of planted trees. In each VIP, subplots were subjected to a manipulation of resource supply and biotic interactions (BEFmod experiment), which started in 2014. On the northern edge of each VIP, 5 subplots were established, each measuring 5.16 x 5.16 m and containing 4 × 4 trees. Subplots were randomly assigned to five different treatments: “No weeding“ (NW, i.e., admitting all types of weeds, already established in 2011), “Phosphorus fertilization” (P, i.e., applying 40 g triple super phosphate (H2PO4)2 per tree, corresponding to 100 kg P/ha once in April 2014), "Fungicide application" (F), "Insecticide application" (I) and “Control” (C, i.e., weeding as on the total plot level together with monthly H2O application).

We recorded the basic diameter, height and the numbers of individuals per species as a proxy for productivity.

Spatial Extent

VIP Plots of the main experiment on Site B

Data columns available in the raw data part of this dataset

Date
Date of the record
Data group: Date
Values
05-May-15
07-May-15
09-May-15
08-May-15
Plot
Plot number on Site B; VIPs and each 1 mu replicate on Site B
Data group: Helper
Values
G28
F26
I25
J29
D29
Treatment
treatment of each subplot: C-Controll; P-Phosphorus fertilization; NW-No weeding; F-Fungicide application; I-Insecticide application
Data group: BEFmod subplots treatment
Values
F
NW
P
C
I
Species_Chinese
species identity by subplot
Data group: Chinese species name
Values
乌饭
丝栗栲
?
具毛常绿荚蒾
Species_Latin
species identity by subplot
Data group: Scientific plant species name
Values
Alniphyllum fortunei
Albizia julibrissin
Aralia chinensis
Adinandra millettii
Ardisia crenata
Basal Diameter
Basal Diameter
Data group: Basal diameter
Values
12.4
1.2
1
1.1
12.5
Height
Height of wild trees
Unit: cm
Data group: Plant height
Keywords: tree height
Values
104
106
105
102
100
Numbers of Individuals
Numbers of Individuals
Data group: Density measure
Values
10
12
1
11
110