نتایج جستجو برای: residential and forest lands

تعداد نتایج: 16858032  

Journal: :Biology letters 2017
Rachakonda Sreekar Richard T Corlett Salindra Dayananda Uromi Manage Goodale Adam Kilpatrick Sarath W Kotagama Lian Pin Koh Eben Goodale

Large tracts of tropical rainforests are being converted into intensive agricultural lands. Such anthropogenic disturbances are known to reduce species turnover across horizontal distances. But it is not known if they can also reduce species turnover across vertical distances (elevation), which have steeper climatic differences. We measured turnover in birds across horizontal and vertical sampl...

2013
Vardan Singh Rawat

This study assessed the potential of carbon stock and carbon sequestration rates in Van Panchayat forests at an altitude of 15001800m. The Total forest biomass was 308.3 t ha -1 , of the total biomass tree layer contributed the most, followed by herbs and shrubs. The forest litter biomass varied between 5.4 t ha -1 (in rainy season) and 6.6 t ha -1 (in winter season). Maximum Carbon sequestrati...

2015
Jérôme Rousselet Alain Roques Jacques Garcia Jean-Pierre Rossi

BACKGROUND Various species of forest trees are commonly used for ornamental purposes and are therefore frequently found in non-forest ecosystems. These trees constitute a significant component of the trees outside forests (TOF). Although increasingly recognized as prominent feature of agricultural lands and built-up areas, not much is known, however, about TOF since they are generally absent fr...

2016
Fisseha Asmelash Tamrat Bekele Emiru Birhane

Experiences worldwide reveal that degraded lands restoration projects achieve little success or fail. Hence, understanding the underlying causes and accordingly, devising appropriate restoration mechanisms is crucial. In doing so, the ever-increasing aspiration and global commitments in degraded lands restoration could be realized. Here we explain that arbuscular mycorrhizal fungi (AMF) biotech...

2013
Lisa A. McCauley David G. Jenkins Pedro F. Quintana-Ascencio

1. Land use (e.g. urbanization, agriculture, natural lands management) may directly affect populations by habitat loss and fragmentation, and indirectly by altering conditions needed for reproductive success. The effects of urbanization are especially pronounced for populations that remain among urbanized areas, but they are difficult to detect in long-lived species. 2. We evaluated the effects...

2016
David J. Mladenoff Ritvik Sahajpal Christopher P. Johnson David E. Rothstein Ben Bond-Lamberty

Perennial cellulosic feedstocks may have potential to reduce life-cycle greenhouse gas (GHG) emissions by offsetting fossil fuels. However, this potential depends on meeting a number of important criteria involving land cover change, including avoiding displacement of agricultural production, not reducing uncultivated natural lands that provide biodiversity habitat and other valued ecosystem se...

2008
D. M. Amatya P. Drewes C. Trettin

The re-initiation of a 7,260 ha forested watershed study on Turkey Creek, a 3 order stream, within the Francis Marion National forest in South Carolina, completes the development of a multi-scale hydrology and ecosystem monitoring framework in the Atlantic Coastal Plain. Hydrology and water quality monitoring began on the Santee Experimental Forest in the 1960’s, and represent an important long...

Journal: :Ecological applications : a publication of the Ecological Society of America 2007
K Norman Johnson Pete Bettinger Jeffrey D Kline Thomas A Spies Marie Lennette Gary Lettman Brian Garber-Yonts Tad Larsen

Protecting biodiversity has become a major goal in managing coastal forests in the Pacific Northwest--an area in which human activities have had a significant influence on landscape change. A complex pattern of public and private forest ownership, combined with new regulations for each owner group, raises questions about how well and how efficiently these policies achieve their biodiversity goa...

2017
Michael J Freake Christopher S DePerno

Comparisons of recent and historic population demographic studies of eastern hellbenders Cryptobranchus alleganiensis alleganiensis have identified significant population declines and extirpations associated with habitat degradation, poor water quality and disease, leading to nomination as a candidate for listing under the Endangered Species Act. However, populations in the southern Appalachian...

ژورنال: آبخیزداری ایران 2023

The purpose of this study is to investigate landuse changes in Gorganrood basin in 2001, 2010 and 2019. Using Landsat and Product-Modes satellite images, used maps were prepared using the classification method of random forest algorithm in Google Earth Engine. Satellite imagery was classified into eight classes including forest, cropland, shrubland, grassland, wetland, urban, barren, and water....

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