Anthropogenic Influence On The Tibetan Plateau

DOWNLOAD

Download Anthropogenic Influence On The Tibetan Plateau PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Anthropogenic Influence On The Tibetan Plateau book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page

Anthropogenic Influence On The Tibetan Plateau

DOWNLOAD
Author : Roman Kühn
language : en
Publisher: GRIN Verlag
Release Date : 2014-08-20

Anthropogenic Influence On The Tibetan Plateau written by Roman Kühn and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-08-20 with Social Science categories.

Seminar paper from the year 2014 in the subject Geography / Earth Science - Regional Geography, grade: 2,3, RWTH Aachen University (Geographisches Institut), language: English, abstract: The Tibetan Plateau is probably the most important and one of the most fragile areas in the world. With its enormous tectonic geomorphology forms and its unique ecosystem the Tibetan Plateau has an huge impact on the asian continent and even on the whole global climate (Cui/Graf 2009:49). For hundred of years this area was inhabited by few nomads, who practiced a sustainable approach of life in this space. Initiating with the reforms of " the Great Leap Forward, the Opening Door Policy and the Globalisation" an imigration flow began to discover and settle down. Those hu-man activities had an influence on the climate change and land-cover change. The consequences resulting thereoff are evident and measurable and the aftereffects of that development cant yet be foreseen in their whole scale. The purpose of this study is to examinethe anthropogenic influence on the Tibetan Plateau in recent years. The structure applied to this paper begins with a geographic classification of the Tibetan Plateau with its geographical, geomorphological and climatical charecteristics. The second part discribes the anthropogenic influence on the Plateau area and its demographical and agricltural development since the 1950s. The impacts of this influence on the vegetational and soil change are being discribed in the third part and the conclusion finalises this study.

Lake Records Of Environmental And Climate Change On The Tibetan Plateau

DOWNLOAD
Author : Zhang Chengjun
language : en
Publisher: Frontiers Media SA
Release Date : 2022-11-07

Lake Records Of Environmental And Climate Change On The Tibetan Plateau written by Zhang Chengjun and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-11-07 with Science categories.

Reconstructing Climate Variability On The Tibetan Plateau

DOWNLOAD
Author : Juliane Wischnewski
language : en
Publisher:
Release Date : 2010

Reconstructing Climate Variability On The Tibetan Plateau written by Juliane Wischnewski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.

Spatial and temporal temperature and moisture patterns across the Tibetan Plateau are very complex. The onset and magnitude of the Holocene climate optimum in the Asian monsoon realm, in particular, is a subject of considerable debate as this time period is often used as an analogue for recent global warming. In the light of contradictory inferences regarding past climate and environmental change on the Tibetan Plateau, I have attempted to explain mismatches in the timing and magnitude of change. Therefore, I analysed the temporal variation of fossil pollen and diatom spectra and the geochemical record from palaeo-ecological records covering different time scales (late Quaternary and the last 200 years) from two core regions in the NE and SE Tibetan Plateau. For interpretation purposes I combined my data with other available palaeo-ecological data to set up corresponding aquatic and terrestrial proxy data sets of two lake pairs and two sets of sites. I focused on the direct comparison of proxies representing lacustrine response to climate signals (e.g., diatoms, ostracods, geochemical record) and proxies representing changes in the terrestrial environment (i.e., terrestrial pollen), in order to asses whether the lake and its catchments respond at similar times and magnitudes to environmental changes. Therefore, I introduced the established numerical technique procrustes rotation as a new approach in palaeoecology to quantitatively compare raw data of any two sedimentary records of interest in order to assess their degree of concordance. Focusing on the late Quaternary, sediment cores from two lakes (Kuhai Lake 35.3ʻN; 99.2ʻE; 4150 m asl; and Koucha Lake 34.0ʻN; 97.2ʻE; 4540 m asl) on the semi-arid northeastern Tibetan Plateau were analysed to identify post-glacial vegetation and environmental changes, and to investigate the responses of lake ecosystems to such changes. Based on the pollen record, five major vegetation and climate changes could be identified: (1) A shift from alpine desert to alpine steppe indicates a change from cold, dry conditions to warmer and more moist conditions at 14.8 cal. ka BP, (2) alpine steppe with tundra elements points to conditions of higher effective moisture and a stepwise warming climate at 13.6 cal. ka BP, (3) the appearance of high-alpine meadow vegetation indicates a further change towards increased moisture, but with colder temperatures, at 7.0 cal. ka BP, (4) the reoccurrence of alpine steppe with desert elements suggests a return to a significantly colder and drier phase at 6.3 cal. ka BP, and (5) the establishment of alpine steppe-meadow vegetation indicates a change back to relatively moist conditions at 2.2 cal. ka BP. To place the reconstructed climate inferences from the NE Tibetan Plateau into the context of Holocene moisture evolution across the Tibetan Plateau, I applied a five-scale moisture index and average link clustering to all available continuous pollen and non-pollen palaeoclimate records from the Tibetan Plateau, in an attempt to detect coherent regional and temporal patterns of moisture evolution on the Plateau. However, no common temporal or spatial pattern of moisture evolution during the Holocene could be detected, which can be assigned to the complex responses of different proxies to environmental changes in an already very heterogeneous mountain landscape, where minor differences in elevation can result in marked variations in microenvironments. Focusing on the past 200 years, I analysed the sedimentary records (LC6 Lake 29.5ʻN, 94.3ʻE, 4132 m asl; and Wuxu Lake 29.9ʻN, 101.1ʻE, 3705 m asl) from the southeastern Tibetan Plateau. I found that despite presumed significant temperature increases over that period, pollen and diatom records from the SE Tibetan Plateau reveal only very subtle changes throughout their profiles. The compositional species turnover investigated over the last 200 years appears relatively low in comparison to the species reorganisations during the Holocene. The results indicate that climatically induced ecological thresholds are not yet crossed, but that human activity has an increasing influence, particularly on the terrestrial ecosystem. Forest clearances and reforestation have not caused forest decline in our study area, but a conversion of natural forests to semi-natural secondary forests. The results from the numerical proxy comparison of the two sets of two pairs of Tibetan lakes indicate that the use of different proxies and the work with palaeo-ecological records from different lake types can cause deviant stories of inferred change. Irrespective of the timescale (Holocene or last 200 years) or region (SE or NE Tibetan Plateau) analysed, the agreement in terms of the direction, timing, and magnitude of change between the corresponding terrestrial data sets is generally better than the match between the corresponding lacustrine data sets, suggesting that lacustrine proxies may partly be influenced by in-lake or local catchment processes whereas the terrestrial proxy reflects a more regional climatic signal. The current disaccord on coherent temporal and spatial climate patterns on the Tibetan Plateau can partly be ascribed to the complexity of proxy response and lake systems on the Tibetan Plateau. Therefore, a multi-proxy, multi-site approach is important in order to gain a reliable climate interpretation for the complex mountain landscape of the Tibetan Plateau.

Attribution Of Extreme Weather Events In The Context Of Climate Change

DOWNLOAD
Author : National Academies of Sciences, Engineering, and Medicine
language : en
Publisher: National Academies Press
Release Date : 2016-07-28

Attribution Of Extreme Weather Events In The Context Of Climate Change written by National Academies of Sciences, Engineering, and Medicine and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-07-28 with Science categories.

As climate has warmed over recent years, a new pattern of more frequent and more intense weather events has unfolded across the globe. Climate models simulate such changes in extreme events, and some of the reasons for the changes are well understood. Warming increases the likelihood of extremely hot days and nights, favors increased atmospheric moisture that may result in more frequent heavy rainfall and snowfall, and leads to evaporation that can exacerbate droughts. Even with evidence of these broad trends, scientists cautioned in the past that individual weather events couldn't be attributed to climate change. Now, with advances in understanding the climate science behind extreme events and the science of extreme event attribution, such blanket statements may not be accurate. The relatively young science of extreme event attribution seeks to tease out the influence of human-cause climate change from other factors, such as natural sources of variability like El Niño, as contributors to individual extreme events. Event attribution can answer questions about how much climate change influenced the probability or intensity of a specific type of weather event. As event attribution capabilities improve, they could help inform choices about assessing and managing risk, and in guiding climate adaptation strategies. This report examines the current state of science of extreme weather attribution, and identifies ways to move the science forward to improve attribution capabilities.

Asian Change In The Context Of Global Climate Change

DOWNLOAD
Author : James Galloway
language : en
Publisher: Cambridge University Press
Release Date : 1998-09-28

Asian Change In The Context Of Global Climate Change written by James Galloway and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-09-28 with Nature categories.

Nearly two-thirds of the world's population live in Asia, and many countries in that region are currently undergoing very rapid industrial, agricultural and economic development. The Framework Convention on Climate Change constrains developed countries with regard to their future emissions of greenhouse gases, but recognizes the special needs of developing countries. There is growing appreciation of the ways in which developing countries in the Asian region both contribute to global changes (by altering biogeochemical pathways and cycles) and are themselves affected by those changes. This volume uses the intellectual efforts and findings of the International Geosphere-Biosphere Programme (IGBP) community to provide the first integrated analysis of the interactions between global change and Asian change, giving particular attention to China's role. The book will be of interest to readers in a wide range of academic disciplines (natural sciences and socio-economic) and for those involved in national and international policy development relevant to global change.

Geochemical Behavior Of Levoglucosan In Tibetan Plateau Glacier Snow And Ice

DOWNLOAD
Author : Chao You
language : en
Publisher: Springer Nature
Release Date : 2020-10-15

Geochemical Behavior Of Levoglucosan In Tibetan Plateau Glacier Snow And Ice written by Chao You and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-15 with Science categories.

This book focuses on geochemical behavior and ancient records of the specific biomarker levoglucosan in Tibetan glaciers, Based on samples from the Zangsegangri (ZSGR) ice cores obtained from the central Tibetan Plateau, it presents annually resolved levoglucosan records and fire changes over the past 430 years. It also discusses the interaction between fire, climate change, and human activities. This is the first effort to reconstruct annual resolution fire records in Tibetan ice, providing crucial information and substantially improved analytical methods toward a better understanding of past fire changes.

Development Society And Environment In Tibet

DOWNLOAD
Author : International Association for Tibetan Studies. Seminar
language : en
Publisher: Austrian Academy of Sciences Press
Release Date : 1998

Development Society And Environment In Tibet written by International Association for Tibetan Studies. Seminar and has been published by Austrian Academy of Sciences Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Business & Economics categories.

Graham E. Clarke, Oxford University, organized a panel for the 7th Seminar of the IATS and edited and prepared this volume on economic, social and environmental changes in Tibet since 1978. Here, experienced Western, Chinese and Tibetan scholars present original case studies and general analysis of the anthropological, economic, and natural resources, as well as the sociological dimension of development and change in eastern and central Tibet. The papers point out the tension and compromise between the unusual and diverse features of the people and environment, and the administrative and economic pressure that results from a uniform developmental strategy. An extended introductory essay links Tibet to the wider intellectual and historical debate on progress and the environment. This important new work breaks fresh ground on the delicate situation of Tibet, and will be essential reading for those concerned with a balanced and objective assessment of Tibet's present and future development. \r\nTable of Contents: CLARKE, Graham E.: Development, Society, and Environment in Tibet; GELEK, The Washu Serthar: A Nomadic Community of Eastern Tibet; MANDERSCHEID, Angela: Life and Economic Patterns of Nomads on the Eastern Tibet Plateau: 'Brog Pa and Sa Ma 'Brog in 'Dzam Thang; LEVINE, Nancy E.: From Nomads to Ranchers: Managing Pasture among Ethnic Tibetans in Sichuan; LOBSANG: The Development of Animal Husbandry on the Qinghai-Tibetan Plateau; WINKLER, Daniel: Deforestation in Eastern Tibet: Human Impact Past and Present; CLARKE, Graham E.: Socio-Economic Change and the Environment in a Pastoral Area of Lhasa Municipality; OSMASTON, Henry A.: Agriculture in the Main Lhasa Valley; SCHWARTZ, Ronald D.: The Reforms Revisited: Grain Procurement in Tibet; RONG MA: Economic Patterns of the Tibet Autonomous Region.

Peatland Restoration And Ecosystem Services

DOWNLOAD
Author : Aletta Bonn
language : en
Publisher: Cambridge University Press
Release Date : 2016-06-23

Peatland Restoration And Ecosystem Services written by Aletta Bonn and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-06-23 with Business & Economics categories.

An interdisciplinary book tackling the challenges of managing peatlands and their ecosystem services in the face of climate change.

Tibetan Pasture Degradation Under The Impact Of Global Change

DOWNLOAD
Author : Shibin Liu
language : en
Publisher:
Release Date : 2017

Tibetan Pasture Degradation Under The Impact Of Global Change written by Shibin Liu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.

The Tibetan Plateau hosts the world's largest alpine pastoral ecosystems, dominated by the endemic sedge Kobresia pygmaea C.B.Clarke. Overgrazing on the Tibetan Plateau has caused severe degradation of vegetation and soils over the past 30-50 years. Due to the very harsh environment and nitrogen (N) and phosphorus (P) limitations in soils, these pastoral ecosystems are particularly sensitive to disturbances (e.g. anthropogenic activities and climate change) and exhibit slow recovery. The objectives of this thesis were to 1) summarize the mechanisms of pasture degradation, 2) elucidate the e...

Late Quaternary Hydrological Paleoenvironmental And Geomorphological Processes In The Tibetan Plateau And Its Adjacent Areas

DOWNLOAD
Author : Xiangjun Liu
language : en
Publisher: Frontiers Media SA
Release Date : 2022-02-23

Late Quaternary Hydrological Paleoenvironmental And Geomorphological Processes In The Tibetan Plateau And Its Adjacent Areas written by Xiangjun Liu and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-02-23 with Science categories.