نتایج جستجو برای: open top chambers
تعداد نتایج: 524349 فیلتر نتایج به سال:
Abstract Aims Drained peatlands are a major source of greenhouse gases (GHG). Paludiculture is the production biomass under wet and peat preserving conditions. Despite growing recognition as GHG mitigation measure, potential influence climate warming on paludiculture still unknown. Methods For two years, we quantified exchange carbon dioxide (CO 2 ), methane (CH 4 ) nitrous oxide (N O) using ma...
Using Pinus bungeana, Platycladus orientalis, Koelreuteria paniculata and Ginkgo biloba as research objects, three open-top chambers with different ozone-concentration gradients were set up (NF, NF40 NF80) based on trunk sap-flow technology to study the difference in ozone absorption by trees under concentrations. The results showed that monthly diurnal variations of density tree species decrea...
In this study, four typical urban landscaping tree species were selected, three open top air chambers with different ozone concentrations set, and the responses of chlorophyll fluorescence, content relative conductivity trees to stress studied. The results showed that increase in concentration, maximum photochemical efficiency, electron transfer quantum yield, rate (ETR) decreased significantly...
The India-based Neutrino Observatory (INO) collaboration is planning to build a massive 50 kton magnetised Iron Calorimeter (ICAL) detector, to study atmospheric neutrinos and to make precision measurements of the parameters related to neutrino oscillations. Glass Resistive Plate Chambers (RPCs) of about 2m 2m in size are going to be used as active elements for the ICAL detector. We have fabric...
Forage species common to the southern USA Piedmont region, Lolium arundinacea, Paspalum dilatatum, Cynodon dactylon and Trifolium repens, were established in a model pasture system to test the future climate change scenario of increasing ozone exposure in combination with varying rainfall amounts on community structure and nutritive quality. Forages were exposed to two levels of ozone [ambient ...
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This research aimed to examine the effects of combining increased temperature and carbon dioxide (CO2) under RCP 4.5 scenarios on yield seed chemical composition Thai rice cultivars; Chinat1, Phathumthani1, Phitsanulok2. The field warming experiment was conducted at Phitsanulok from 2018 2020. Sixteen field-open top chambers (OTCs) were applied simulate expected future climate situat...
Relatively little is known about the implications of atmospheric CO2 enrichment for tree responses to biotic disturbances such as folivory. We examined the combined effects of elevated CO2 concentration ([CO2]) and defoliation on growth and physiology of sugar maple (Acer saccharum Marsh.) and trembling aspen (Populus tremuloides Michx.). Seedlings were planted in the ground in eight open-top c...
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