نتایج جستجو برای: ephedra distachya و tamarix ramosissima
تعداد نتایج: 764683 فیلتر نتایج به سال:
Water deficits severely affect growth, particularly for the plants in arid and semiarid regions of the world. In addition to precipitation, other subsidiary water, such as dew, fog, clouds and small rain showers, may also be absorbed by leaves in a process known as foliar water uptake. With the severe scarcity of water in desert regions, this process is increasingly becoming a necessity. Studie...
مطالعات ویژگیهای عملکردی لکههای گیاهی مرتع در شناسایی معرفهای گیاهی مؤثر در سلامت مراتع مناطق خشک و نیمهخشک با بهبود بخشیدن شرایط سطح خاک و همچنین شناخت تأثیر عملیاتهای اصلاحی مدیریتی و تغییرات شرایط طبیعی در سطح مرتع مؤثر است. بدین منظور در منطقۀ نیاتک سیستان نمونهبرداری در سطح چشمانداز که دارای شرایط یکسان بوده و در آن برخی گونههای بومی مانند Alhagi camelorum و Salsola rigida و 2 گو...
Chemical investigation of Tamarix ramosissima Ledeb, a traditional herbal medicine used for rheumatoid arthritis (RA) treatment in northwest China, led to the discovery of a new phenolic aromatic rings substituted lactam, tamaractam (1), together with the previously reported compounds cis-N-feruloyl-3-O-methyldopamine (2) and trans-N-feruloyl-3-O-methyldopamine (3). The structures of the compou...
To explore the roles of plasticity and genetic variation in the response to spatial and temporal climate variation, we established a common garden consisting of paired collections of native and introduced riparian trees sampled along a latitudinal gradient. The garden in Fort Collins, Colorado (latitude 40.6°N), included 681 native plains cottonwood (Populus deltoides subsp. monilifera) and int...
A Bowen ratio energy balance was conducted over a Tamarix ramosissima (saltcedar) stand growing in a riparian corridor along the Virgin River in southern Nevada. Measurements in two separate years were compared and contrasted on the basis of changes in growing conditions. In 1994, a drought year, record high temperatures, dry winds, and a falling water table caused partial wilt of outer smaller...
Bu çalışmada Aralık (Iğdır, Türkiye) karasal hareketli kumul vejetasyonunun üst sintaksonomik birimlerinin analizi yapılmıştır. kapsamda, Braun-Blanquet floristik metoduna uygun olarak kaydedilmiş olan 47 relevé yeniden değerlendirilmiştir. Sinoptik tabloda relevélere kaydedilen taksonların geçerli ve güncel isimleri kullanılmıştır. Değerlendirme sonucu, ilçesinde vejetasyonundan tanımlanan Eup...
A Bowen ratio energy balance was conducted over a Tamarix ramosissima (saltcedar) stand growing in a riparian corridor along the Virgin River in southern Nevada. Measurements in two separate years were compared and contrasted on the basis of changes in growing conditions. In 1994, a drought year, record high temperatures, dry winds, and a falling water table caused partial wilt of outer smaller...
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