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Proceedings Paper

Effect of increased UV-B on weeds and big worms in a farmland ecological system
Author(s): Youfei Zheng; Wei Gao; Chuanhai Wang; Wei Xiao; Ronggang Zhang
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Paper Abstract

Since the 1970's stratospheric zone attenuation liable for surface UV radiation enhancement has been among the ever-increasing concerns of global climatologists. In recent years, numerous efforts have been undertaken at home and abroad to investigate the effect of enhanced surface UV-B on crops' growth, development and yield formation, achieving a lot of significant fruits and concurrently on field ecosystems. As we know, most of the experiments in the past were conducted in laboratories, including a short-term response on an individual-plant basis. This condition differs consipicuously from yield experiments at the level of an ecosystem with regard to its long-range response. Specifically the degree to which the UV radiation influences non-crop species, which leads to the distortion of the response to UV-B enhancement of crop's population and its ecosystem. As a result, it is necessary to carry out long-range field experiments at an ecosystem's level. This paper aims at the impacts of intensified UV-B upon weeds and large soil worms (i.e., microanimals) in an ecosystem of growing wheat, corn (maize) and spinach together with preliminary investigation of the mechanisms.

Paper Details

Date Published: 4 November 2003
PDF: 8 pages
Proc. SPIE 5156, Ultraviolet Ground- and Space-based Measurements, Models, and Effects III, (4 November 2003); doi: 10.1117/12.509662
Show Author Affiliations
Youfei Zheng, Nanjing Institute of Meteorology (China)
Wei Gao, Colorado State Univ. (United States)
Chuanhai Wang, Nanjing Institute of Meteorology (China)
Wei Xiao, Nanjing Institute of Meteorology (China)
Ronggang Zhang, Nanjing Institute of Meteorology (China)


Published in SPIE Proceedings Vol. 5156:
Ultraviolet Ground- and Space-based Measurements, Models, and Effects III
James R. Slusser; Jay R. Herman; Wei Gao, Editor(s)

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