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Land Cover Change Characteristics of North-South Transect in Northeast Asia from 2001 to 2012

Journal Articles & Books
Dezembro, 2016
Rússia
China
Mongólia
Ásia

Northeast Asia is an area with relative concentrations of resources, a complex ecological environment pattern, and a marked human—land contrast relationship. This area has significance for analyzing land cover patterns and variations for regional sustainable development among the trans-boundary areas of China, Russia, and Mongolia. In this paper, the transect analysis research tool and transfer matrix method are used to capture the regional land cover change characteristics by using Moderate Resolution Imaging Spectroradiometer(MODIS) datasets recorded from 2001 to 2012.

Gypsy moth response to landscape structure differs from neutral model predictions: implications for invasion monitoring

Journal Articles & Books
Dezembro, 2007

Simulations of dispersal across computer-generated neutral landscapes have generated testable predictions about the relationship between dispersal success and landscape structure. Models predict a threshold response in dispersal success with increasing habitat fragmentation. A threshold is defined as an abrupt, disproportionate decline in dispersal success at a certain proportion of habitat in the landscape.

Predictive spatial niche and biodiversity hotspot models for small mammal communities in Alaska: applying machine-learning to conservation planning

Journal Articles & Books
Dezembro, 2015

CONTEXT: Changing global environmental conditions, especially at northern latitudes, are threatening to shift species distributions and alter wildlife communities. OBJECTIVE: We aimed to establish current distributions and community arrangements of small mammals to provide important baselines for monitoring and conserving biodiversity into the future. METHODS: We used 4,408 archived museum and open-access records and the machine learning algorithm, RandomForests, to create high-resolution spatial niche models for 17 species of rodents and shrews in Alaska.

Macroinvertebrate assemblages of peatland lakes: Assessment of conservation value with respect to anthropogenic land-cover change

Journal Articles & Books
Dezembro, 2013
Europa

Small blanket bog lakes can contain many rare and threatened aquatic invertebrate species. Their conservation value, however, is threatened throughout Europe by peat extraction and particularly conifer afforestation, which can compromise the physico-chemical habitat quality of peatland lakes through excessive inputs of forestry-derived dissolved and particulate substances.

Effect of Widespread Agricultural Chemical Use on Butterfly Diversity across Turkish Provinces

Journal Articles & Books
Dezembro, 2013
Turquia

Although agricultural intensification is thought to pose a significant threat to species, little is known about its role in driving biodiversity loss at regional scales. I assessed the effects of a major component of agricultural intensification, agricultural chemical use, and land‐cover and climatic variables on butterfly diversity across 81 provinces in Turkey, where agriculture is practiced extensively but with varying degrees of intensity.

influence of land use on forest structure, species composition, and soil conditions in headwater-slope wetlands of coastal Alabama, USA

Journal Articles & Books
Dezembro, 2015
Estados Unidos

Wetlands are impacted by surrounding land use and land cover (LULC), but little information is available specifically on headwater wetlands. A total of 30 headwater wetlands were examined in coastal Alabama, USA, representing a range of surrounding LULC. Percent cover by forest, agriculture, and impervious surface area (ISA) (i.e., urban land use) were quantified in each corresponding watershed.

empirical evaluation of spatial value transfer methods for identifying cultural ecosystem services

Journal Articles & Books
Dezembro, 2016
Noruega

A significant barrier to the assessment of ecosystem services is a lack of primary data, especially for cultural ecosystem services. Spatial value transfer, also known as benefits transfer, is a method to identify the probable locations of ecosystem services based on empirical spatial associations found in other geographic locations. To date, there has been no systematic evaluation of spatial value transfer methods for cultural ecosystem services identified through participatory mapping methods.

Hierarchical Community Occurrence Model for North Carolina Stream Fish

Journal Articles & Books
Dezembro, 2014
Estados Unidos
América do Norte

The southeastern USA is home to one of the richest—and most imperiled and threatened—freshwater fish assemblages in North America. For many of these rare and threatened species, conservation efforts are often limited by a lack of data. Drawing on a unique and extensive data set spanning over 20 years, we modeled occurrence probabilities of 126 stream fish species sampled throughout North Carolina, many of which occur more broadly in the southeastern USA.

Landslide detection and susceptibility mapping in the Sagimakri area, Korea using KOMPSAT-1 and weight of evidence technique

Journal Articles & Books
Dezembro, 2013
República da Coreia

The purpose of this study is to detect landslide locations from satellite images and use them for landslide susceptibility mapping in the Sagimakri area, Korea using a geographic information system and a data-driven weight of evidence model. The landslide location areas were identified from Korea multipurpose satellite images by means of change detection technique and further verified by extensive field survey. Subsequently, landslide locations were randomly selected in a 70:30 ratio for training and validation of the model, respectively.

Tracking desertification on the Mongolian steppe through NDVI and field-survey data

Journal Articles & Books
Dezembro, 2011
Mongólia
Ásia Oriental

Changing environmental and socio-economic conditions make land degradation, a major concern in Central and East Asia. Globally satellite imagery, particularly Normalized Difference Vegetation Index (NDVI) data, has proved an effective tool for monitoring land cover change. This study examines 33 grassland water points using vegetation field studies and remote sensing techniques to track desertification on the Mongolian plateau.

Amorphous silica pools in permafrost soils of the Central Canadian Arctic and the potential impact of climate change

Journal Articles & Books
Dezembro, 2015

We investigated the distribution, storage and landscape partitioning of soil amorphous silica (ASi) in a central Canadian region dominated by tundra and peatlands to provide a first estimate of the amount of ASi stored in Arctic permafrost ecosystems. We hypothesize that, similar to soil organic matter, Arctic soils store large amounts of ASi which may be affected by projected climate changes and associated changes in permafrost regimes. Average soil ASi storage (top 1 m) ranged between 9600 and 83,500 kg SiO₂ ha⁻¹among different land-cover types.

Influence of territorial variables on the performance of wildfire detection systems in the Iberian Peninsula

Journal Articles & Books
Dezembro, 2013
Portugal
Espanha

Wildfire detection systems planning is an essential component of national and regional wildfire management policies. The common resources usually used in wildfire detection are lookout towers, terrestrial mobile brigades, aerial reconnaissance and the general public.