Challenges in elevated CO2 experiments on forests.

نویسندگان

  • Carlo Calfapietra
  • Elizabeth A Ainsworth
  • Claus Beier
  • Paolo De Angelis
  • David S Ellsworth
  • Douglas L Godbold
  • George R Hendrey
  • Thomas Hickler
  • Marcel R Hoosbeek
  • David F Karnosky
  • John King
  • Christian Körner
  • Andrew D B Leakey
  • Keith F Lewin
  • Marion Liberloo
  • Stephen P Long
  • Martin Lukac
  • Rainer Matyssek
  • Franco Miglietta
  • John Nagy
  • Richard J Norby
  • Ram Oren
  • Kevin E Percy
  • Alistair Rogers
  • Giuseppe Scarascia Mugnozza
  • Mark Stitt
  • Gail Taylor
  • Reinhart Ceulemans
چکیده

Current forest Free Air CO(2) Enrichment (FACE) experiments are reaching completion. Therefore, it is time to define the scientific goals and priorities of future experimental facilities. In this opinion article, we discuss the following three overarching issues (i) What are the most urgent scientific questions and how can they be addressed? (ii) What forest ecosystems should be investigated? (iii) Which other climate change factors should be coupled with elevated CO(2) concentrations in future experiments to better predict the effects of climate change? Plantations and natural forests can have conflicting purposes for high productivity and environmental protection. However, in both cases the assessment of carbon balance and how this will be affected by elevated CO(2) concentrations and the interacting climate change factors is the most pressing priority for future experiments.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Forest Sensitivity to Elevated Atmospheric CO2 and its Relevance to Carbon Management

Experimental research investigating the responses of forest trees to rising concentrations of atmospheric CO2 has for the past two decades been justified on the basis of the prominent role of forests in the global carbon cycle. The C cycle regulates the airborne fraction of CO2 from fossil fuel combustion, and, therefore, the rate of increase of CO2 in the atmosphere and the associated effects ...

متن کامل

Elevated [CO2] and forest vegetation: more a water issue than a carbon issue?

Studies of responses of forest vegetation to steadily increasing atmospheric concentrations of CO2 have focussed strongly on the potential of trees to absorb extra carbon; the effects of elevated [CO2] on plant–soil water relations via decreased stomatal conductance and increased ambient temperature have received less attention, but may be significant in the long term at the ecosystem level. CO...

متن کامل

An imperative need for global change research in tropical forests.

Tropical forests play a crucial role in regulating regional and global climate dynamics, and model projections suggest that rapid climate change may result in forest dieback or savannization. However, these predictions are largely based on results from leaf-level studies. How tropical forests respond and feedback to climate change is largely unknown at the ecosystem level. Several complementary...

متن کامل

Elevated CO2 does not increase eucalypt forest productivity on a low-phosphorus soil

Rising atmospheric CO2 stimulates photosynthesis and productivity of forests, o setting CO2 emissions. Elevated CO2 experiments in temperate planted forests yielded ∼23% increases in productivity over the initial years. Whether similar CO2 stimulation occurs in mature evergreen broadleaved forests on low-phosphorus (P) soils is unknown, largely due to lack of experimental evidence. This knowled...

متن کامل

Leaf and canopy conductance in aspen and aspen-birch forests under free-air enrichment of carbon dioxide and ozone.

Increasing concentrations of atmospheric carbon dioxide (CO2) and tropospheric ozone (O3) have the potential to affect tree physiology and structure, and hence forest feedbacks on climate. Here, we investigated how elevated concentrations of CO2 (+45%) and O3 (+35%), alone and in combination, affected conductance for mass transfer at the leaf and canopy levels in pure aspen (Populus tremuloides...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Trends in plant science

دوره 15 1  شماره 

صفحات  -

تاریخ انتشار 2010