Remote Sensing and GIS for Land Cover/land Use Change Detection and Analysis in the Semi-natural Ecosystems and Agriculture Landscapes of the Central Ethiopian Rift Valley PDF Download

Author: Bedru Sherefa Muzein
Publisher:
ISBN: 9783941216235
Category : Agriculture
Languages : en
Pages : 177

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Author: Assefa M. Melesse
Publisher: Springer
ISBN: 3319187872
Category : Nature
Languages : en
Pages : 822

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Book Description
The book presents the processes governing the dynamics of landscapes, soils and sediments, water and energy under different climatic regions using studies conducted in varied climatic zones including arid, semi-arid, humid and wet regions. The spatiotemporal availability of the processes and fluxes and their linkage to the environment, land, soil and water management are presented at various scales. Spatial scales including laboratory, field, watershed, river basin and regions are represented. The effect of tillage operations and land management on soil physical characteristics and soil moisture is discussed. The book has 35 chapters in seven sections: 1) Landscape and Land Cover Dynamics, 2) Rainfall-Runoff Processes, 3) Floods and Hydrological Processes 4) Groundwater Flow and Aquifer Management, 5) Sediment Dynamics and Soil Management, 6) Climate change impact on vegetation, sediment and water dynamics, and 7) Water and Watershed Management.

Author: Feras Ziadat
Publisher: Routledge
ISBN: 1317624122
Category : Technology & Engineering
Languages : en
Pages : 331

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Book Description
The research presented in this book demonstrates how an integrated ‘systems’ approach to farming in the watershed context increases the effectiveness of a production system and improves people’s livelihoods. It takes an integrated approach, using one watershed in Ethiopia as a ‘laboratory’ or model case study to focus on the interaction and interdependence between land, water, crops, soil, water harvesting, supplemental irrigation, forestry, socio-economic aspects, livestock and farm tools. A range of linked studies was conducted with active participation of the farming community and other relevant stakeholders, such as the local offices of agriculture and extension services. The starting point for the work was the premise that previous efforts to solve farming system constraints using a piecemeal approach or discipline-specific focus have not been successful. Thus, addressing agricultural and environmental constraints through a holistic approach enables the generation of comprehensive technologies to sustainably improve the natural resource base and livelihoods of communities. The authors discuss trade-offs and resource allocation, demonstrating how the environment can be protected while also improving productivity. A unique feature is the methodology developed for the selection of suitable fields and farmers to implement new approaches or improved technologies, to achieve production increases while reducing degradation of sensitive agro-ecosystems. It is also shown how the watershed scale is a valuable basis for assessing the protection of fragile lands.

Author: Melaku Bekele
Publisher: CIFOR
ISBN: 6023870031
Category :
Languages : en
Pages : 94

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Book Description
Specifically, the paper identifies and analyzes several direct drivers of deforestation and forest degradation in Ethiopia including: forest clearance for both subsistence and large-scale agriculture; illegal and unsustainable extraction of wood mainly for charcoal and firewood; overgrazing; and recurrent forest fires. It also reviews underlying drivers including: rapid population increase and the associated growing demand for land and energy; extensive legal and institutional gaps including lack of stable and equitable forest tenure; lack of stakeholder participation in forest management and benefit-sharing schemes; and weak law enforcement. These drivers and the dominant actors behind them – ranging from small-scale subsistence farmers to national and global investors – are discussed in the context of the political economy, including the policy and institutional framework of the country. The implications of the overall forest condition to the objectives and requirements of REDD+ are evaluated, and key issues that need to be addressed for efficient, effective and equitable implementation of REDD+ are discussed. These key issues include: reconciling the apparently contradictory policies and programs, particularly those that negatively affect the forestry sector; improving the forest tenure and governance system; augmenting economic return from forests to communities and individuals; creating more efficient and effective forest institutions at all levels; and enhancing sectoral and regional coordination among implementing agencies.

Author: William B. Meyer
Publisher: Cambridge University Press
ISBN: 9780521470858
Category : Business & Economics
Languages : en
Pages : 570

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Book Description
This book analyses the impact of human activities on the Earth's surface and environment.

Author: David D. Briske
Publisher: Springer
ISBN: 3319467093
Category : Technology & Engineering
Languages : en
Pages : 664

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Book Description
This book is open access under a CC BY-NC 2.5 license. This book provides an unprecedented synthesis of the current status of scientific and management knowledge regarding global rangelands and the major challenges that confront them. It has been organized around three major themes. The first summarizes the conceptual advances that have occurred in the rangeland profession. The second addresses the implications of these conceptual advances to management and policy. The third assesses several major challenges confronting global rangelands in the 21st century. This book will compliment applied range management textbooks by describing the conceptual foundation on which the rangeland profession is based. It has been written to be accessible to a broad audience, including ecosystem managers, educators, students and policy makers. The content is founded on the collective experience, knowledge and commitment of 80 authors who have worked in rangelands throughout the world. Their collective contributions indicate that a more comprehensive framework is necessary to address the complex challenges confronting global rangelands. Rangelands represent adaptive social-ecological systems, in which societal values, organizations and capacities are of equal importance to, and interact with, those of ecological processes. A more comprehensive framework for rangeland systems may enable management agencies, and educational, research and policy making organizations to more effectively assess complex problems and develop appropriate solutions.

Author: James Richard Anderson
Publisher:
ISBN:
Category : Land cover
Languages : en
Pages : 36

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Book Description

Author: Kim Geheb
Publisher: IUCN
ISBN: 9782831706894
Category : Nature
Languages : en
Pages : 126

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Author:
Publisher: ILRI (aka ILCA and ILRAD)
ISBN:
Category :
Languages : en
Pages : 88

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Book Description

Author: National Research Council
Publisher: National Academies Press
ISBN: 0309288363
Category : Science
Languages : en
Pages : 267

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Book Description
People are constantly changing the land surface through construction, agriculture, energy production, and other activities. Changes both in how land is used by people (land use) and in the vegetation, rock, buildings, and other physical material that cover the Earth's surface (land cover) can be described and future land change can be projected using land-change models (LCMs). LCMs are a key means for understanding how humans are reshaping the Earth's surface in the past and present, for forecasting future landscape conditions, and for developing policies to manage our use of resources and the environment at scales ranging from an individual parcel of land in a city to vast expanses of forests around the world. Advancing Land Change Modeling: Opportunities and Research Requirements describes various LCM approaches, suggests guidance for their appropriate application, and makes recommendations to improve the integration of observation strategies into the models. This report provides a summary and evaluation of several modeling approaches, and their theoretical and empirical underpinnings, relative to complex land-change dynamics and processes, and identifies several opportunities for further advancing the science, data, and cyberinfrastructure involved in the LCM enterprise. Because of the numerous models available, the report focuses on describing the categories of approaches used along with selected examples, rather than providing a review of specific models. Additionally, because all modeling approaches have relative strengths and weaknesses, the report compares these relative to different purposes. Advancing Land Change Modeling's recommendations for assessment of future data and research needs will enable model outputs to better assist the science, policy, and decisionsupport communities.