نتایج جستجو برای: farmland fragmentation
تعداد نتایج: 38625 فیلتر نتایج به سال:
iran is one of the countries facing the most severe farmland fragmentation (ff) in rural areas and farmland consolidation (fc) is generally regarded as being a suitable instrument to solve this problem . a case study in the central area of iran was conducted to explore landholder's attitudes towards issues related to ff and fc. randomized stratified sampling frame was used to select 146 landhol...
Farmland is a fundamental resource for human survival and development. However, farmland fragmentation has become a serious problem, causing ecological damage and low crop production efficiency in many parts of the world. Based on remote sensing and socioeconomic data, we used landscape pattern indices, Morphological Spatial Pattern Analysis (MSPA), and Markov chain models to analyze the tempor...
Land use planning is always officially implemented as an effective tool to control urban development and protect farmland. However, its impact on land use change remains untested in China. Using a case study of Hang-Jia-Hu region, the main objective of this paper was to investigate the influence of different land use spatial control schemes on farmland conversion and urban development. Comparis...
Spatial system dynamics (SSD) models are typically implemented by linking stock variables to raster grids while the use of object representations of human artefacts such as buildings or ownership has been limited. This limitation is addressed by this article, which demonstrates the use of object representations in SSD. The objects are parcels of land that are attributed to grassland farms. The ...
Scientists have aimed at exploring land use and land cover change (LUCC) and modeling future landscape pattern in order to improve our understanding of the causes and consequences of these phenomena. This study addresses LUCC in the upper reaches of Minjiang River, China, from 1974 to 2000. Based on remotely sensed images, LUCC and landscape pattern change were assessed using cross-tabulation a...
Farmland fragmentation and farmland consolidation are two sides of the same coin paradoxically viewed as management tools. While there is a vast body literature addressing connections between on one hand agriculture production crops diversification other hand, their relationship with variations in food security still under-explored. This challenges policy makers about whether how to devise poli...
Introduction Consequences of declines in bumblebee populations Causes of bumblebee declines Reductions in floral resources Loss of nest sites Pesticides Impacts of non-native bees Habitat fragmentation and population structure Why do some bumblebee species remain common? Conserving bumblebees Enhancing bumblebee diversity in farmland The importance of urban areas Conclusions Summary Points Unre...
Birds are commonly used as an example of the strongly declining farmland biodiversity in Europe. The populations of many species have been shown to suffer from intensification of management, reduction of landscape heterogeneity, and habitat loss and fragmentation. These conditions particularly dominate farmland in the economically well developed countries of Western Europe. Currently, the farml...
Farmland fragmentation has emerged as the primary manifestation of global land use changes during last century. Following economic reform and opening up in China from 1980s, Beijing–Tianjin–Hebei (BTH) region witnessed continuous farmland fragmentation. Understanding spatial–temporal dynamics is crucial for formulating sustainable management strategies. However, specific causes locations remain...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید