Brechfa Level II plot - Measurements

 

Variables monitored in UK beech long-term forest monitoring plots	Starting year	Frequency of Sampling (S) and Analysis (A)	Bedgebury	Brechfa	Cannonteign	Kelty	Wangford	Wykeham
Foliar sampling & analysis	1995	2 years S & A (1 year from 2000)
	2002	1 year
Soil analysis	1995	10 years S & A
Increment	1995-6	5 years S & A
	2004	5 years S & A
Crown condition	1995	Annual
	2002	Annual
Meteorology	Automatic Weather Station: various dates	Hourly
Atmospheric deposition	1995	2 weeks S 4 weeks A
	2002	2 weeks S 4 weeks A	V	V	V			V
Air quality monitoring: Diffusion tubes lowered down from above-canopy	No plot specific data collected	N/A
Air quality monitoring: Lone-standing diffusion tubes	NOx: 2002	Monthly
	SOx: 2002	Monthly
	O3: 2002	Monthly
Ground vegetation	1998	3 years S & A
	2001	3 years S & A
	2004	3 years S & A
Litter fall quantification & analysis	1998	2 weeks (Autumn) 4 weeks (Rest year)
	2002	2 weeks (Autumn) 4 weeks (Rest year)
Soil solution	1995	2 weeks S 4 weeks A
Growth uptake of heavy metals	2003	Single measurement

V – Volume only (no throughfall chemistry)