THERMAL RADIATION LOAD ON TEMPERATURE REGIMES IN PLANT GROWTH CHAMBERS
スポンサーリンク
概要
- 論文の詳細を見る
In enclosed environments such as a plant growth chamber, thermal radiation plays an important role in determining heat balance and therefore the resultant temperature regimes. In artificially illuminated chambers, a significant level of thermal radiation is emitted from the lamps and/or the lamp house surface. Though there are both shortwave and longwave components in thermal radiation, our measurements in two different chamber designs, with and without thermal radiation filters, showed the longwave component being 2-3 times larger than the shortwave one. The increased thermal radiation, in particular the longwave component, caused differences in the temperatures of the plant and soil compared to that of the air. The differences were greater with increasing exposure to thermal radiation. Because of greater exposure to thermal radiation, both plant and soil temperatures were higher than the air temperature when plants were grown in isolated pots compared to plants in mutually shaded pots arranged in a block. In field-use chambers under natural light conditions, the longwave component of thermal radiation is modified to a large extent by the transmittance of the cover film. The temperature gradient chamber used in this study was covered with PVC film having low transmittance to longwave radiation and it showed a greater soil temperature relative to the air temperature when compared to a chamber covered with polyethylene film having high transmittance. As a result, across the two chambers and outdoors, the rice plant responses were correlated to the soil temperatures but not to the air temperatures.
- 九州大学の論文
- 2000-12-00
著者
-
OKADA Masumi
Tohoku National Agricultural Experiment Station
-
HAMASAKI T.
Tohoku National Agricultural Experiment Station
関連論文
- Effect of elevated atmospheric CO_2 concentration on ammonia oxidizing bacteria communities inhabiting in rice roots(Soil Biology)
- CH_4 production potential in a paddy soil exposed to atmospheric CO_2 enrichment(Environment)
- P23-15 CH_4 and CO_2 production potential in a rice paddy soil exposed to atmospheric CO_2 enrichment
- Effect of Free-Air CO_2 Enrichment (FACE) on the Community Structure of Aquatic Organisms in Floodwater of a Japanese Paddy Field during the Flooding Period of Rice Cultivation (Soil Biology)
- Effect of Free-Air CO_2 Enrichment (FACE ) on Methanogenic Archaeal Communities Inhabiting Rice Roots in a Japanese Rice Field (Soil Biology)
- 6-10 Microbial activity and diversity in floodwater and surface soil layers of paddy fields under Free Air Carbon dioxide Enrichment (FACE)
- Effect of Free-Air CO_2 Enrichment (FACE) on Microbial Biomass in Paddy Field Soil
- 24-6 Dynamics of soil microbial biomass carbon and nitrogen in paddy soil as influenced by free air CO_2 enrichment
- The Free-Air CO_2 Enrichment(FACE)for Rice in Japan
- Phasic Development of Rice Seedlings under Elevated CO_2 and Temperature Regimes
- Seasonal Changes in Canopy Photosynthesis and Respiration, and Partitioning of Photosynthate, in Rice (Oryza sativa L.) Grown Under Free-Air CO_2 Enrichment
- PRE-AIR-CONDITIONED TEMPERATURE GRADIENT CHAMBERS FOR RESEARCH ON TEMPERATURE STRESS IN PLANTS
- TEMPERATURE GRADIENT CHAMBERS FOR RESEARCH ON GLOBAL ENVIRONMENT CHANGE : I. THERMAL ENVIRONMENT IN A LARGE CHAMBER
- THERMAL RADIATION LOAD ON TEMPERATURE REGIMES IN PLANT GROWTH CHAMBERS