Abstract Taxonomy gives great importance to the geographical distribution of plants on surface planet earth, and for this reason, Cain introduced term Areography science that is particularly interested in areas spread world. Therefore, work dealt with an environmental study several sites western Iraq terms type soil biological communities these sites. Samples belonging different families (dicot...

Although pharmacological industries have produced a number of new antibiotics, resistance of microorganisms to these drugs has increased. Some antibiotics have become almost obsolete because of drug resistance. In the course of our research program on medicinal plants, we investigated Haloxylon scoparium a species in Moroccan Sahara. In the present study, five crude extracts, including methanol...

BACKGROUND AND AIMS China is one of the countries most severely affected by desertification. Haloxylon ammodendron (Amaranthaceae) is an ecologically important component of the desert ecosystem and is one of the main tree species used for restoration, yet we know little about its genetic structure. METHODS Genetic variation within and between nine populations of H. ammodendron from two region...

occurrence of environmental issues and loss of natural resources are the important causes of risk and crisis management strategies of the environment. the influx of quicksand into settlements, communication ways and economical installations is one of the most important environmental problems in the eastern north of toroud. the environmental system reacts against of quicksand stress, and is tryi...

Abstract Haloxylon ammodendron is an excellent windproof and sand-fixing species whose shrubs are widely cultivated in arid desert areas of northwest China but now at risk degradation shrinkage. Using the chlorophyll fluorescence image analysis technique, response photosystem II (PSII) photochemical efficiency non-photochemical quenching capacity to sediment-carrying wind sand-free (both 12 m s...