Table 1 Site and community structure characteristics of JGS and SMT forests.

From: CAN Canopy Addition of Nitrogen Better Illustrate the Effect of Atmospheric Nitrogen Deposition on Forest Ecosystem?

 

Site

Characteristic

JGS

SMT

Forest type

Mixed deciduous forest

Broadleaved evergreen forest

Annual rainfall (mm)

1119

2364

Annual temperature(oC)

15.2

20.8

N deposition in rainfall

19.6 (kg N ha−1yr−1)

34.1 (kg N ha−1yr−1)

Soil type

Yellow-brown soil

Latosolic red soil

Forest age (year)

45 (thinned in 1970)

50 (thinned in 1965)

Stand density (tree ha−1)

446

818

Mean DBH (cm)

26.6

18.6

Mean tree height (m)

21.6

13.8

Dominant species

Quercus acutissima Carruth.; Quercus variabilis Bl.; Liquidambar formosana Hance.

Cryptocarya concinna; Schima superba; Machilus chinensis; Castanea henryi (Skan) Rehd.; Engelhardtia roxburghiana

  1. Data of temperature and rainfall were collected from nearby meteorological stations and the values are mean of last 60 years. N deposition in rainfall was minored from April 2011 to March 2013 at both forest sites. The trees with DBH ≥ 10 cm were investigated on July 2012. DBH, diameter at breast height; JGS, Jigongshan Forest; SMT, Shimentai Forest.
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