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...

Objective:Platycladus orientalis or Thuja orientalis is a native plant of Iran different parts of which are used in the treatment of various diseases such as: gout, rheumatoid arthritis, common cold, cough, bronchitis, asthma, high blood pressure and hormonal disorders like hirsutism and baldness. Also, various organs of this species have been used as appetizer. The purpose of this study was to...

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...

Recently, the formation of reactive oxygen species (ROS) and reactive nitrogen species (RNS) have been implicated in the oxidative deterioration of food products as well as in the pathogenesis of several human diseases such atherosclerosis, diabetes mellitus, chronic inflammation, neurodegenerative disorders and certain types of cancer. Plant secondary metabolites mainly phenolics and flavonoid...

Structure-based forest management (SBFM) is a method for improving structure and quality based on nearest-neighbor analysis. Stand spatial directly affects the health stability of ecosystems. Research effects SBFM distribution parameters needed to provide scientific basis further development implementation technology in forestry. The present study was conducted six permanent plots (20 m × 20 m)...

Platycladus orientalis, a widespread conifer with long lifespan and significant adaptability. It is much used in reforestation in north China and commonly planted in central Asia. With the increasing demand for plantation forest in central to north China, breeding programs are progressively established for this species. Efficient use of breeding resources requires good understanding of the gene...

Plant secondary metabolites play an important role in plant-insect interactions and therefore such compounds may have insecticidal or biological activity against insects. Fumigant toxicity of essential oils of leaves and fruits from oriental arborvitae (Platycladus orientalis [L.] Franco) (Cupressaceae) was investigated against adults of cowpea weevil (Callosobruchus maculatus Fab.), rice weevi...