نتایج جستجو برای: vegetation types forb

تعداد نتایج: 531616  

2014
Antonius G. T. Schut Grant W. Wardell-Johnson Colin J. Yates Gunnar Keppel Ireneusz Baran Steven E. Franklin Stephen D. Hopper Kimberley P. Van Niel Ladislav Mucina Margaret Byrne

Identification of refugia is an increasingly important adaptation strategy in conservation planning under rapid anthropogenic climate change. Granite outcrops (GOs) provide extraordinary diversity, including a wide range of taxa, vegetation types and habitats in the Southwest Australian Floristic Region (SWAFR). However, poor characterization of GOs limits the capacity of conservation planning ...

2005
Yulin LI Douglas A. JOHNSON Yongzhong SU Jianyuan CUI Tonghui ZHANG

We investigated the variations in specific leaf area (SLA) and leaf dry matter content (LDMC) of 20 species (10 annuals and 10 perennials) that have different distributional patterns in the Kerqin Sandy Land in northern China. The main purpose of our study was to determine if SLA and/or LDMC could be used as indicators of plant resource-use strategy in sand dune environments. The selected speci...

Journal: :Physical Review D 2007

2017
Victoria Nuzzo Andrea Dávalos Bernd Blossey

Excessive herbivory can have transformative effects on forest understory vegetation, converting diverse communities into depauperate ones, often with increased abundance of non-native plants. White-tailed deer are a problematic herbivore throughout much of eastern North America and alter forest understory community structure. Reducing (by culling) or eliminating (by fencing) deer herbivory is e...

Journal: :journal of rangeland science 2013
habib yazdanshenas mohammad jafari hossein azarnivand hossein arzani malihe nasiri

understanding the plant species diversity could be used as an importantindicator applied for the natural areas management. the aim of this study was toinvestigate the relationships between soil characterizes with distribution and diversity ofplant in vegetation types in karvan district (located in west of isfahan province). for thispurpose, three vegetation types were selected as follows: scari...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2013
Cristina Da Lio Andrea D'Alpaos Marco Marani

The presence and continued existence of tidal morphologies, and in particular of salt marshes, is intimately connected with biological activity, especially with the presence of halophytic vegetation. Here, we review recent contributions to tidal biogeomorphology and identify the presence of multiple competing stable states arising from a two-way feedback between biomass productivity and topogra...

Journal: :JASIST 2010
Asif-ul Haque Paul Ginsparg

We continue investigation of the effect of position in announcements of newly received articles, a single day artifact, with citations received over the course of ensuing years. Earlier work [1, 2] focused on the " visibility " effect for positions near the beginnings of announcements, and on the " self-promotion " effect associated to authors intentionally aiming for these positions, with both...

2004
J. NICHOL

Very high resolution (VHR) satellite remote sensing systems are now capable of providing imagery with similar spatial detail to aerial photography, but with superior spectral information. This research investigates the hypothesis that it should be possible to use multispectral IKONOS images to quantify urban vegetation, obtaining similar accuracy to that achieved from false colour aerial photog...

Journal: :Data Science Journal 2007
Xianbin Liu Xiumei Li Xinggui Zhao Long Yi

Because remote sensing data can offer information on the geographical landscape of the earth’s surface, these data can be widely used in researching types of land and monitoring vegetation. In this paper, we discuss how to extract land types and vegetation from remote sensing data using the method of Non-Supervised Classification. These data provide the means to study types of soil and vegetati...

Journal: :South African Journal of Botany 2006

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید