نتایج جستجو برای: farmland fragmentation
تعداد نتایج: 38625 فیلتر نتایج به سال:
Global environmental challenges require approaches that integrate biodiversity conservation, food production, and livelihoods at landscape scales. We reviewed the approach of conserving biodiversity on “high-nature-value” (HNV) farmland, covering 75 million ha in Europe, from a resilience perspective. Despite growing recognition in natural resource policies, many HNV farmlands have vanished, an...
This study examines the effects of land use and slope angle on runoff, soil loss and nitrogen loss from hillslopes of the Loess Plateau in China. Farmland, wasteland and four forest treatments (sea buckthornþ poplar, immature sea buckthorn, mature sea buckthorn, and immature Chinese pine) were the types of land use that were compared. The results showed that July was the critical period for run...
The Czech landscape has undergone various changes over the last 100 years and been mainly adapted agriculturally for economic purposes. This resulted, among other things, in reservoirs being clogged with sediment. Vrchlice Reservoir was built 1970 to supply drinking water around 50,000 inhabitants, increased sedimentation detected reservoir recent years. Water erosion sediment transport were mo...
The changes of natural habitat structure and function due to human interference is hastening worldwide, it compulsory preserve biological resources in a protected system. This study aims measure the landscape ecological extent fragmentation Bale mountains national park. land use/land cover change was determined by interpreting 1985, 1995, 2005 2017 Landsat images with ArcGIS 10.3, selected stru...
The protection of farmland from development is emerging as a major policy initiative in several states and dozens of counties and municipalities. From a national perspective, the loss of farmland-estimated at about one million acres a year-does not appear to be a threat to America's food supply or food prices. However, from a local and regional perspective, farmland loss to suburban and ex-urba...
Precision agriculture is the trend of modern agriculture, and it is also one of the important ways to realize the sustainable development of agriculture. In order to meet the production requirements of precision agriculture-efficient use of agricultural resources, and improving the crop yields and quality-some necessary field information in crop growth environment needs to be collected and moni...
To test flying fox adaptations to a habitat mosaic with extreme deforestation, the abundance, habitat choice and feeding behavior of the Pacific flying fox, Pteropus tonganus, were investigated across 16 islands of the Yasawa archipelago, Fiji. The habitat mosaic is formed by 4.3 percent tropical dry forest and 3.3 percent farmland, leaving exotic grasslands and stands of Leucaena leucocephala ...
This study used pitfall trapping to examine community composition and diversity of ground beetles in five different habitats (coniferous, deciduous, mixed coniferous, farmland, and settlements) within Anhui Yaoluoping National Nature Reserve from May to September 2014. In total, 1,352 ground beetles were collected, belonging to 16 genera and 44 species. Of these, four dominant species Dolichus ...
Where is the UK's pollinator biodiversity? The importance of urban areas for flower-visiting insects
Insect pollinators provide a crucial ecosystem service, but are under threat. Urban areas could be important for pollinators, though their value relative to other habitats is poorly known. We compared pollinator communities using quantified flower-visitation networks in 36 sites (each 1 km(2)) in three landscapes: urban, farmland and nature reserves. Overall, flower-visitor abundance and specie...
Based on the combined use of satellite remote sensing and geographical information systems(GIS), as well as field investigation, the land-use change dynamics and the interaction between these changes are analyzed in the Zuli River Basin located in semi-arid Loess Plateau China during the period of 1987-2005, which with typical farming-pastoral region feature of northern China. The land-use chan...
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