نتایج جستجو برای: land fragmentation

تعداد نتایج: 151571  

Introduction Land-use planning has three subcategories: allocation, politics and economics. In general, allocation is the interaction between land proportion (supply) and the area required (demand), in current condition of the region. On the other hand, politics is the spatial planning. The economic aspect of land use is dedicated to the fact that in the system of supply and demand in order ...

Journal: :Journal of environmental management 2008
Jochen A G Jaeger René Bertiller Christian Schwick Kalin Müller Charlotte Steinmeier Klaus C Ewald Jaboury Ghazoul

There is an increasing need and interest in including indicators of landscape fragmentation in monitoring systems of sustainable landscape management. Landscape fragmentation due to transportation infrastructure and urban development threatens human and environmental well-being by noise and pollution from traffic, reducing the size and viability of wildlife populations, facilitating the spread ...

2017
Maria Cristina Rulli Monia Santini David T. S. Hayman Paolo D’Odorico

Tropical forests are undergoing land use change in many regions of the world, including the African continent. Human populations living close to forest margins fragmented and disturbed by deforestation may be particularly exposed to zoonotic infections because of the higher likelihood for humans to be in contact with disease reservoirs. Quantitative analysis of the nexus between deforestation a...

2013
Innocent Nzeyimana Alfred E. Hartemink Jan de Graaff

Agriculture is the cornerstone of Rwanda’s economy. The authors review how the sector has changed and specifically what soil management practices are now being implemented to enhance coffee production. Coffee covers around 2.3% of total cultivated arable land, and is grown mainly by smallholder farmers on plots of less than one hectare. Rwanda produces high-quality speciality or fully washed co...

Journal: :Land 2022

This paper outlines land-use/landscape pattern changes and relationships between land-use change trajectories environmental variables in the Dong ethnic-minority village of Gaoyou southwestern China. In study, landscape metrics were applied to evaluate land use patterns using GeoEye-1 satellite imagery for 2009/2020 drone 2019, redundancy analysis (RDA) was clarify relationship variables. The 1...

Habitat and ecosystem fragmentation and, consequently, the loss of landscape connectivity are major causes of biodiversity destruction, leading to disruption of material, energy, and information flow at the landscape scale. Given the importance of this issue, the current study aimed to evaluate the ecological connectivity and spatial planning of Qazvin Province, in order to re-establish and pro...

2016
Yuan-Bin Cai Hui-Min Li Xin-Yue Ye Hao Zhang Karsten Grunewald

Rapid urbanization, land scarcity, and accompanying ecological deterioration in China have received growing attention. In this paper, two fast-growing metropolitan regions, Greater Shanghai and Greater Hangzhou, were selected as case studies to quantify the impact of land use/land cover (LULC) change on regional ecosystem services value (ESV) at the landscape scale since the late 1970s. The res...

2002
Daniel G. Brown Pierre Goovaerts Meng-Ying Li

change is important because it is the only way to evaluate the Abstract consequences of current and recent land-cover trends for the An approach to simulating land-cover change based on pairs of future fragmentation of the landscape. classified images is presented. The method conditions the Transition probability models have been used extensively simulations on three sources of information: an ...

2013
Ziqiang Xing Xiaoliang Shi Denghua Yan Weihua Xiao

This study presented the analyses of temporal and spatial change of land use dynamics and landscape pattern in the Huai river basin during the period 1986-2005 by using the land use dynamic degree model, the land use centroids and the landscape metrics; and discussed the driving forces of land use change over the period employed the gray relational analysis method. The main results showed that:...

2003
James M. Dyer

Significant shifts in plant species ranges are anticipated next century if climate warms due to greenhouse gas emissions. The magnitude of the projected warming is considerable; the rate at which it is predicted to occur is unprecedented. There is genuine reason for concern that the extent of the range shifts will exceed the dispersal abilities of many plant species, especially in the context o...

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