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PORTAIL D'INFORMATION GÉOGRAPHIQUE

Patterns and driving factors of WUE and NUE in natural forest ecosystems along the North-South Transect of Eastern China

Auteur(s) et Affiliation(s)

SHENG, W.
Key lab. of Ecosystem Network Observation and Modeling, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
Graduate University of Chinese Academy of Sciences, Beijing, Chine
REN, S.
Key lab. of Ecosystem Network Observation and Modeling, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
YU, G.
Key lab. of Ecosystem Network Observation and Modeling, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
FANG, H.
Key lab. of Ecosystem Network Observation and Modeling, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
JIANG, C.
Inst. of Applied Ecology, Chinese Academy of Sciences, Shenyang, Chine
ZHANG, M.
Key lab. of Ecosystem Network Observation and Modeling, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
Graduate University of Chinese Academy of Sciences, Beijing, Chine


Description :
From July 2008 to August 2008, 72 leaf samples from 22 species and 81 soil samples in the 9 natural forest ecosystems were collected, from north to south along the North-South Transect of Eastern China (NSTEC). Based on these samples, the AA. studied the geographical distribution patterns of vegetable water use efficiency (WUE) and nitrogen use efficiency (NUE), and analyzed their relationship with environmental factors. The results suggest that global change would impact the resource use efficiency of forest ecosystems. However, vegetation could adapt to those changes by increasing the use efficiency of shortage resource while decreasing the relatively ample one. But extreme impacts, such as heavy nitrogen deposition, would break this trade-off mechanism and give a dramatic disturbance to the ecosystem biogeochemical cycle.


Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2011, vol. 21, n°. 4, p. 651-665, nombre de pages : 15, Références bibliographiques : 2 p.

Date :
2011

Editeur :
Pays édition : Chine

Langue :
Anglais
Droits :
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