نتایج جستجو برای: plant systematic
تعداد نتایج: 679435 فیلتر نتایج به سال:
the current study aims to ordinate ecological groups in the wetlands of northern and eastern slopes of the sabalan mountain and investigate their relationship with environmental variables. the location of wetlands was found using field surveys and satellite images. in total, 32 wetland sites were identified for the sampling purpose. 320 sample plots (relevé) were selected using the systematic-r...
introduction: although many studies have been conducted in the telepathology field in recent years, a systematic review that examines studies in a comparative manner has not yet been undertaken. this paper aims to review the published papers on telepathology projects and compare them in several aspects such as telepathology method,telecommunication method, clinical outcome, etc. methods: pubmed...
BACKGROUND The systematic analysis of a large number of comparable plant trait data can support investigations into phylogenetics and ecological adaptation, with broad applications in evolutionary biology, agriculture, conservation, and the functioning of ecosystems. Floras, i.e., books collecting the information on all known plant species found within a region, are a potentially rich source of...
چکیده تحقیق حاضر با هدف ارزیابی بهره وری مصرف آب در اراضی نیشکر کشت و صنعت امیرکبیر با استفاده از اطلاعات ماهواره ای لندست 8 انجام شد. بدین منظور تبخیر – تعرق واقعی و عملکرد نهایی محصول به کمک اطلاعات ماهواره ای برآورد گردید و جهت واسنجی و صحت یابی آن از داده های مزرعه ای استفاده شد. حجم کل تبخیر-تعرق واقعی نیشکر در دوره فصل رشد،160 میلیون مترمکعب در سطح 5/9328 هکتار اراضی تحت کشت نیشکر و میزا...
The Honeycomb Selection Design (HSD) is an innovative experimental method whose main feature the even and systematic entry arrangement. Its systematicity, if combined with absence of inter-plant competition that maximizes phenotypic expression differentiation individual plants, enables implementation single-plant selection as early initial generations genetic segregation, facilitating plant bre...
The aim of present study was comparison of plant diversity in managed and control compartments of Jamand district in Noshahr (Mazandaran province). Random-systematic sampling method with network dimension of 100×200 m was used to locate samples. Sampling plot area was 400 m2 to survey woody species and 100 m2 plots was set up to herbaceous species (in the center of main plots). At each sample p...
Assessment of forest soil and vegetation characteristics provides basic and essential information for the protection and rehabilitation measures in forest ecosystems. Therefore, regard to the importance of this issue, the distribution of different soil properties and vegetation diversity in relation to conservation management and degradation investigated in the oak forests of Ilam province usin...
Although the proportional-integral-derivative (PID) controller has only three parameters, it is not easy, without a systematic procedure, to find good values (settings) for them. In fact, a visit to a process plant will usually show that a large number of the PID controllers are poorly tuned. The tuning rules presented in this chapter have developed mainly as a result of teaching this material,...
This study aimed to identify the most important physical variables affecting the distribution of four range plants species (Tamarix aphylla, Calligonum comosum, Prosopis spicigera and Salsola rigida) habitats and to prepare potential habitat map of the species using Maximum Entropy (MaxEnt) method in rangelands of Jiroft city, Kerman province, located in SE Iran. To this end, sampling of vegeta...
In this study, the economic evaluation of carbon sequestration in plant biomass and soil under three types of livestock grazing intensity was investigated. Three area under light, medium and high grazing intensities in the Inchehbrun salt lands of Golestan province were selected. Soil and plant samples were taken in a systematic-random method. Three 100 meters length parallel transects were ins...
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