Influence of floodwater irrigation on vegetation composition and vegetation regeneration in a Taklimakan desert oasis
نویسندگان
چکیده
منابع مشابه
Desert vegetation and timing of solar radiation
Timing and amount of solar radiation were examined as factors influencing the distribution of seven perennial plants on a small mountain located in the Chihuahuan Desert. Average direct beam solar radiation fluxes at differing times throughout the day and year were estimated with computer calculations. Principal components analysis was used to reduce the number of solar radiation parameters and...
متن کاملinvestigation on the regeneration and vegetation composition in the edge of forest roads
in order to evaluate the effects of forest road on regeneration and vegetation composition in district no. 2 shafaroud, a road was selected with the length of 400 m that the altitude, aspect, slope variations and species composition were similar. five transects in right and 5 transects in left side of road, were established as perpendicular. in each transect 5, 15, 25 and 35 m distances were de...
متن کاملcritical period effects in foreign language learning:the influence of maturational state on the acquisition of reading,writing, and grammar in english as a foreign language
since the 1960s the age effects on learning both first and second language have been explored by many linguists and applied linguists (e.g lennerberg, 1967; schachter, 1996; long, 1990) and the existence of critical period for language acquisition was found to be a common ground of all these studies. in spite of some common findings, some issues about the impacts of age on acquiring a second or...
15 صفحه اولPost-fire species composition and regeneration of understory vegetation in a boreal forest in central Sweden
Post-fire survival, composition and regeneration of understory species in the boreal forest have shown to be affected by several factors, where consumption of the organic soil layer together with altered soil properties play important parts. There has however also been shown that the pre-fire site characteristics affect the post-fire understory vegetation. This study aimed to investigate the ef...
متن کاملeffect of seed priming and irrigation regimes on yield,yield components and quality of safflowers cultivars
این مطالعه در سال 1386-87 در آزمایشگاه و مزرعه پژوهشی دانشگاه صنعتی اصفهان به منظور تعیین مناسب ترین تیمار بذری و ارزیابی اثر پرایمینگ بر روی سه رقم گلرنگ تحت سه رژیم آبیاری انجام گرفت. برخی از مطالعات اثرات سودمند پرایمینگ بذر را بر روی گیاهان مختلف بررسی کرده اند اما در حال حاضر اطلاعات کمی در مورد خصوصیات مربوط به جوانه زنی، مراحل نموی، عملکرد و خصوصیات کمی و کیفی بذور تیمار شده ژنوتیپ های م...
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ژورنال
عنوان ژورنال: Science Bulletin
سال: 2008
ISSN: 2095-9273,2095-9281
DOI: 10.1007/s11434-008-6018-z