Plant and Soil

, Volume 333, Issue 1, pp 391–401

Root respiration and its relation to nutrient contents in soil and root and EVI among 8 ecosystems, northern China

Regular Article

DOI: 10.1007/s11104-010-0354-x

Cite this article as:
Wang, W., Peng, S. & Fang, J. Plant Soil (2010) 333: 391. doi:10.1007/s11104-010-0354-x

Abstract

Root respiration is a critical and uncertain component of ecosystem carbon budgets. We assessed whether variation in root respiration at a reference temperature were associated with that of root and soil nutrient contents and enhanced vegetation index (EVI) among 8 ecosystems, including three forests, two shrublands, two meadow grasslands, and one meadow in a forest-steppe ecotone in northern China. Mass specific root respiration was positively related to root nitrogen content when data from all the different classes of root diameter were pooled. Area specific root respiration increased with soil available nitrogen through increasing fine root biomass. Beside the effect of soil or root nutrient contents, mass specific respiration of fine roots followed EVI patterns, suggesting that root respiration was strongly dependent on photosynthesis. A simple respiration–EVI relationship may provide a convenient way to estimate root respiration and has potential applications in quantitative spatial extrapolation.

Keywords

Enhanced vegetation indexRoot nitrogenRoot respirationScaling relationshipsSoil available nitrogen

Supplementary material

11104_2010_354_MOESM1_ESM.doc (38 kb)
Fig. S1(a) C (%), (b) N (%) and (c) P (%) contents (means ± S.D.) for roots with diameters of 0–2 mm (blank), 2–5 mm (left diagonal) and >5 mm (right diagonal) across different ecosystems. P1, P2, P3 are 12-, 23-, and 39-year-old P. sylvestris; L1, L2, L3 are 12-, 22-, and 42-year old L. principis-rupprechtii; B1, MB, RB, M1, M2 and M are 46-year-old B. platyphylla, M. baccata, R. bella; meadow grassland 1, meadow grassland 2 and meadow. (DOC 38 kb)
11104_2010_354_MOESM2_ESM.doc (30 kb)
Fig. S2(a) Soil organic C (SOC) (%), (b) soil total N (STN) (%), (c) soil available N (mg kg−1) and (d) soil total P (STP) (%) contents across different ecosystems. Values are means ± S.D. P1, P2, P3 are 12-, 23-, and 39-year-old P. sylvestris; L1, L2, L3 are 12-, 22-, and 42-year old L. principis-rupprechtii; B1, MB, RB, M1, M2 and M are 46-year-old B. platyphylla, M. baccata, R. bella; meadow grassland 1, meadow grassland 2 and meadow. (DOC 30 kb)

Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  1. 1.Department of Ecology, College of Urban and Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of EducationPeking UniversityBeijingChina