Pub Date : 2018-07-03DOI: 10.1080/10225706.2018.1504807
H. Lee
ABSTRACT Since 2005, there have been an increasing number of large-N quantitative studies measuring the effect of climate change on wars in recent history. Those large-N studies are crucial in illuminating the close connection between the physical environment and human societies in a macro (i.e. long-temporal and large-spatial) historic perspective. Grounded on a large number of cases, those studies help evidence and generalize the societal impact of climate change. Nevertheless, this large-N approach is relatively new in academia, and there is not any standard practice as regards how the quantitative analysis of the pre-industrial climate-war nexus should be conducted. Some methodological issues remain open. In this study, those large-N studies of the climate-war nexus in the pre-industrial period are systematically reviewed. Some conceptual and methodological issues pertinent to the understanding and examination of the climate-war nexus are discussed. Suggestions and priorities for future research on the topic are also provided at the end of this paper. This study may provide deeper reflections and produce constructive insights about the relationship between climate change and wars, advancing progress in climate-war research.
{"title":"Measuring the effect of climate change on wars in history","authors":"H. Lee","doi":"10.1080/10225706.2018.1504807","DOIUrl":"https://doi.org/10.1080/10225706.2018.1504807","url":null,"abstract":"ABSTRACT Since 2005, there have been an increasing number of large-N quantitative studies measuring the effect of climate change on wars in recent history. Those large-N studies are crucial in illuminating the close connection between the physical environment and human societies in a macro (i.e. long-temporal and large-spatial) historic perspective. Grounded on a large number of cases, those studies help evidence and generalize the societal impact of climate change. Nevertheless, this large-N approach is relatively new in academia, and there is not any standard practice as regards how the quantitative analysis of the pre-industrial climate-war nexus should be conducted. Some methodological issues remain open. In this study, those large-N studies of the climate-war nexus in the pre-industrial period are systematically reviewed. Some conceptual and methodological issues pertinent to the understanding and examination of the climate-war nexus are discussed. Suggestions and priorities for future research on the topic are also provided at the end of this paper. This study may provide deeper reflections and produce constructive insights about the relationship between climate change and wars, advancing progress in climate-war research.","PeriodicalId":44260,"journal":{"name":"Asian Geographer","volume":"35 1","pages":"123 - 142"},"PeriodicalIF":0.0,"publicationDate":"2018-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10225706.2018.1504807","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47209002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-06-06DOI: 10.1080/10225706.2018.1463854
Mahmood Shoorcheh
ABSTRACT The present paper aims to explore how the principle of “spatiality” provides internal consistency and intrinsic unity to the science of geography. The main idea is that geography as a science has an intrinsic unity based on the principle of “spatiality,” which embraces many manifestations in some of the main dimensions of this science, and almost all various perceptions from this science and from various aspects of it refer to the principle of “spatiality.” Accordingly, the purpose of this paper is to discuss the nature of geographic knowledge and attempts to read this science based on the principle of linguistic unity and conceptual cohesion in some of its most important aspects (Geo, language, perspective, concepts. ideas, concerns, teaching and learning, application and purposes). This is to improve the integrity of understanding and introducing Geography among other sciences.
{"title":"On the spatiality of geographic knowledge","authors":"Mahmood Shoorcheh","doi":"10.1080/10225706.2018.1463854","DOIUrl":"https://doi.org/10.1080/10225706.2018.1463854","url":null,"abstract":"ABSTRACT The present paper aims to explore how the principle of “spatiality” provides internal consistency and intrinsic unity to the science of geography. The main idea is that geography as a science has an intrinsic unity based on the principle of “spatiality,” which embraces many manifestations in some of the main dimensions of this science, and almost all various perceptions from this science and from various aspects of it refer to the principle of “spatiality.” Accordingly, the purpose of this paper is to discuss the nature of geographic knowledge and attempts to read this science based on the principle of linguistic unity and conceptual cohesion in some of its most important aspects (Geo, language, perspective, concepts. ideas, concerns, teaching and learning, application and purposes). This is to improve the integrity of understanding and introducing Geography among other sciences.","PeriodicalId":44260,"journal":{"name":"Asian Geographer","volume":"36 1","pages":"63 - 80"},"PeriodicalIF":0.0,"publicationDate":"2018-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10225706.2018.1463854","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44889122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-06-05DOI: 10.1080/10225706.2018.1483831
W. Holden
ABSTRACT The Philippines is one of the most vulnerable countries in the world to climate change. While climate change is a threat arising from outside of the Philippines, environmental degradation and unsustainable development practices occurring within the Philippines increase its vulnerability to climate change. This article examines the hazards posed to the Philippines by climate change, discusses factors in the Philippines contributing to climate change vulnerability, discusses the need for a population centric development paradigm, and concludes with a discussion of the historic, and continuing, domination of Philippines society by an elite that has taken control of the state and uses it as a vehicle for furthering its own interests.
{"title":"Endogenous exacerbation of an exogenous problem: climate change, environmental degradation, and unsustainable development practices in the Philippines","authors":"W. Holden","doi":"10.1080/10225706.2018.1483831","DOIUrl":"https://doi.org/10.1080/10225706.2018.1483831","url":null,"abstract":"ABSTRACT The Philippines is one of the most vulnerable countries in the world to climate change. While climate change is a threat arising from outside of the Philippines, environmental degradation and unsustainable development practices occurring within the Philippines increase its vulnerability to climate change. This article examines the hazards posed to the Philippines by climate change, discusses factors in the Philippines contributing to climate change vulnerability, discusses the need for a population centric development paradigm, and concludes with a discussion of the historic, and continuing, domination of Philippines society by an elite that has taken control of the state and uses it as a vehicle for furthering its own interests.","PeriodicalId":44260,"journal":{"name":"Asian Geographer","volume":"36 1","pages":"1 - 27"},"PeriodicalIF":0.0,"publicationDate":"2018-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10225706.2018.1483831","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45631233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-02DOI: 10.1080/10225706.2018.1426023
Mingyong Li, Jianping Duan, Du-juan Zhang, Lilyl . Wang, Jun Wang, Xu-Chun Li, Jie Zhou
ABSTRACT Climate change, especially the rapid warming since the industrial revolution, has drawn much attention over the past decades. However, the short instrumental climate records on the Tibetan Plateau (TP) impede our understanding of the current status of climate. Although tree-ring-based temperature reconstructions have been developed on the TP, increasing the spatial distribution of sampling sites can improve our understanding of the recent warming. Here we present a new tree-ring maximum latewood density chronology of Balfour spruce (Picea likiangensis var. balfouriana) growing near the upper treeline on the eastern TP, and use it to reconstruct late summer (August–September) mean temperature since AD 1837. The reconstruction explains 61.7% of the actual variance of instrumental August–September mean temperature over the calibration period 1957–2014, and represents regional-scale temperature variations over the eastern and southeastern TP. The August–September mean temperature reconstruction reveals three relatively cold phases (the 1850s–1870s, the 1900s–1910s and the 1960s) and two warm periods (the 1930s–1940s and 1972–2014) over the past two centuries. Comparisons of our reconstruction with other independent tree-ring-based temperature records and glacier fluctuation documents near our research area show good consistencies in those cold and warm phases. Our reconstruction exhibits a pronounced and persistent temperature rise since the 1960s, providing a new line of evidence for the recent warming on the TP. Moreover, our results indicate that the August–September mean temperature variability over the eastern TP has a potential linkage with the EI Nino/Southern Oscillation and the Atlantic Multi-decadal Oscillation.
{"title":"Tree-ring-density inferred August–September temperature variability on the eastern Tibetan Plateau for the past two centuries","authors":"Mingyong Li, Jianping Duan, Du-juan Zhang, Lilyl . Wang, Jun Wang, Xu-Chun Li, Jie Zhou","doi":"10.1080/10225706.2018.1426023","DOIUrl":"https://doi.org/10.1080/10225706.2018.1426023","url":null,"abstract":"ABSTRACT Climate change, especially the rapid warming since the industrial revolution, has drawn much attention over the past decades. However, the short instrumental climate records on the Tibetan Plateau (TP) impede our understanding of the current status of climate. Although tree-ring-based temperature reconstructions have been developed on the TP, increasing the spatial distribution of sampling sites can improve our understanding of the recent warming. Here we present a new tree-ring maximum latewood density chronology of Balfour spruce (Picea likiangensis var. balfouriana) growing near the upper treeline on the eastern TP, and use it to reconstruct late summer (August–September) mean temperature since AD 1837. The reconstruction explains 61.7% of the actual variance of instrumental August–September mean temperature over the calibration period 1957–2014, and represents regional-scale temperature variations over the eastern and southeastern TP. The August–September mean temperature reconstruction reveals three relatively cold phases (the 1850s–1870s, the 1900s–1910s and the 1960s) and two warm periods (the 1930s–1940s and 1972–2014) over the past two centuries. Comparisons of our reconstruction with other independent tree-ring-based temperature records and glacier fluctuation documents near our research area show good consistencies in those cold and warm phases. Our reconstruction exhibits a pronounced and persistent temperature rise since the 1960s, providing a new line of evidence for the recent warming on the TP. Moreover, our results indicate that the August–September mean temperature variability over the eastern TP has a potential linkage with the EI Nino/Southern Oscillation and the Atlantic Multi-decadal Oscillation.","PeriodicalId":44260,"journal":{"name":"Asian Geographer","volume":"35 1","pages":"107 - 120"},"PeriodicalIF":0.0,"publicationDate":"2018-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10225706.2018.1426023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42658768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-02DOI: 10.1080/10225706.2018.1476256
K. Farrell, Hans Westlund
ABSTRACT Having gone from 11.8% of its population inhabiting urban areas in 1950 to 49.2% by 2010, China represents the most dramatic urban transformation the world has seen. With the contemporary urban narrative presenting new challenges, particularly in terms of its unprecedented pace and scale, this paper conducts an inquiry into the nature and causes of China’s rapid urban ascent. Making use of a new analytical framework, this paper maps out the changing stages of China’s urban transition and examines the components of urban growth underpinning it. It arrives at several notable findings. Rural to urban migration has been the dominant component of urban growth, followed by urban natural population increase and reclassification. Although China’s urban growth rates were high, it is the reduction in rural growth rates that underpinned China’s particularly rapid urbanization rates. China is currently in the latter part of the accelerated stage of its urban transition, and is expected to enter the terminal stage by 2030. In light of China’s ongoing urban transition, this paper concludes with reflections on China’s New-Type Urbanization Plan 2014–2020.
{"title":"China’s rapid urban ascent: an examination into the components of urban growth","authors":"K. Farrell, Hans Westlund","doi":"10.1080/10225706.2018.1476256","DOIUrl":"https://doi.org/10.1080/10225706.2018.1476256","url":null,"abstract":"ABSTRACT Having gone from 11.8% of its population inhabiting urban areas in 1950 to 49.2% by 2010, China represents the most dramatic urban transformation the world has seen. With the contemporary urban narrative presenting new challenges, particularly in terms of its unprecedented pace and scale, this paper conducts an inquiry into the nature and causes of China’s rapid urban ascent. Making use of a new analytical framework, this paper maps out the changing stages of China’s urban transition and examines the components of urban growth underpinning it. It arrives at several notable findings. Rural to urban migration has been the dominant component of urban growth, followed by urban natural population increase and reclassification. Although China’s urban growth rates were high, it is the reduction in rural growth rates that underpinned China’s particularly rapid urbanization rates. China is currently in the latter part of the accelerated stage of its urban transition, and is expected to enter the terminal stage by 2030. In light of China’s ongoing urban transition, this paper concludes with reflections on China’s New-Type Urbanization Plan 2014–2020.","PeriodicalId":44260,"journal":{"name":"Asian Geographer","volume":"35 1","pages":"106 - 85"},"PeriodicalIF":0.0,"publicationDate":"2018-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10225706.2018.1476256","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43596973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-02DOI: 10.1080/10225706.2017.1422767
Thanapan Laiprakobsup
ABSTRACT This article examines the relation between leadership, government, trust, and how community-based enterprises (CBEs) access markets. It argues that leadership styles, the relation with the government, and level of trust among members and networks lead to different patterns of market access of local community enterprises. Conducting field research and in-depth interviews with CBEs in northeastern, central, and southern Thailand, it was found that some CBEs establish their enterprises and networks and directly access markets without relying on the government. Meanwhile, other CBEs are more likely to rely on the government to establish their enterprises, to connect with other local enterprises, and to access markets. Leadership, trust within enterprises, and proximity to government agencies can explain the different paths of CBE market access. Instead of implementing a universal program for all CBEs, the government needs to be concerned with the specific characteristics of CBEs in order to respond directly to their needs.
{"title":"Leadership, trust, proximity to government, and community-based enterprise development in rural Thailand","authors":"Thanapan Laiprakobsup","doi":"10.1080/10225706.2017.1422767","DOIUrl":"https://doi.org/10.1080/10225706.2017.1422767","url":null,"abstract":"ABSTRACT This article examines the relation between leadership, government, trust, and how community-based enterprises (CBEs) access markets. It argues that leadership styles, the relation with the government, and level of trust among members and networks lead to different patterns of market access of local community enterprises. Conducting field research and in-depth interviews with CBEs in northeastern, central, and southern Thailand, it was found that some CBEs establish their enterprises and networks and directly access markets without relying on the government. Meanwhile, other CBEs are more likely to rely on the government to establish their enterprises, to connect with other local enterprises, and to access markets. Leadership, trust within enterprises, and proximity to government agencies can explain the different paths of CBE market access. Instead of implementing a universal program for all CBEs, the government needs to be concerned with the specific characteristics of CBEs in order to respond directly to their needs.","PeriodicalId":44260,"journal":{"name":"Asian Geographer","volume":"35 1","pages":"53 - 84"},"PeriodicalIF":0.0,"publicationDate":"2018-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10225706.2017.1422767","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44423466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-02DOI: 10.1080/10225706.2017.1405826
Xiang Zhang
ABSTRACT Fast food is a widely used phenomenon in geography to analyze socioeconomic issues at both the national and city scales. Due to the increasing popularity of fast food as symbol of globalization, more participants have entered this competitive industry. This article examines two new elements in the industry: Japanese fast food, representing a new trend, and China, representing a new geography of consumption. This article provides a comprehensive analysis of the distribution of these new fast food stores in China. By applying a series of quantitative and qualitative methods including cartographical mapping, regression modeling, and crowdsourcing label cataloging, it reveals that these Japanese fast food stores present an attractive catering choice for highly educated youth in China. Through the analysis of the spatial distribution of these stores, a new model of fast food is generating new social/cultural implications in the world's largest emerging economy.
{"title":"Spatial patterns and social/cultural implications of Japanese fast food chains in China","authors":"Xiang Zhang","doi":"10.1080/10225706.2017.1405826","DOIUrl":"https://doi.org/10.1080/10225706.2017.1405826","url":null,"abstract":"ABSTRACT Fast food is a widely used phenomenon in geography to analyze socioeconomic issues at both the national and city scales. Due to the increasing popularity of fast food as symbol of globalization, more participants have entered this competitive industry. This article examines two new elements in the industry: Japanese fast food, representing a new trend, and China, representing a new geography of consumption. This article provides a comprehensive analysis of the distribution of these new fast food stores in China. By applying a series of quantitative and qualitative methods including cartographical mapping, regression modeling, and crowdsourcing label cataloging, it reveals that these Japanese fast food stores present an attractive catering choice for highly educated youth in China. Through the analysis of the spatial distribution of these stores, a new model of fast food is generating new social/cultural implications in the world's largest emerging economy.","PeriodicalId":44260,"journal":{"name":"Asian Geographer","volume":"35 1","pages":"15 - 34"},"PeriodicalIF":0.0,"publicationDate":"2018-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10225706.2017.1405826","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46387760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-02DOI: 10.1080/10225706.2017.1406863
Sai-Leung Ng, Yin Zhang, K. H. Ng, Hung Wong, Joanna Lee
ABSTRACT Population growth and urbanization have resulted in the emergence of mega cities in recent decades. While compact urban fabrics and high residential density imply intensive interactions between man and environment, the living environment may be one of the most important factors affecting quality of life (QOL) of city dwellers. With this in mind, this paper seeks to understand the manners in which the residents relate themselves to the places they live and how they derive neighborhood and QOL, in such way that the relationship between living environment and QOL can be understood. A random telephone survey (N = 1,114) was conducted in Hong Kong. Results showed that different levels of neighborhood satisfaction varied in residents of different housing types and living environment was a significant predictor of resident’s QOL. Other than the architecture of housing, this paper highlights the importance of services and facilities for the development of social relations and community building. This paper may supplement to the Western QOL studies and provide reference for urban planning initiatives for Asian cities.
{"title":"Living environment and quality of life in Hong Kong","authors":"Sai-Leung Ng, Yin Zhang, K. H. Ng, Hung Wong, Joanna Lee","doi":"10.1080/10225706.2017.1406863","DOIUrl":"https://doi.org/10.1080/10225706.2017.1406863","url":null,"abstract":"ABSTRACT Population growth and urbanization have resulted in the emergence of mega cities in recent decades. While compact urban fabrics and high residential density imply intensive interactions between man and environment, the living environment may be one of the most important factors affecting quality of life (QOL) of city dwellers. With this in mind, this paper seeks to understand the manners in which the residents relate themselves to the places they live and how they derive neighborhood and QOL, in such way that the relationship between living environment and QOL can be understood. A random telephone survey (N = 1,114) was conducted in Hong Kong. Results showed that different levels of neighborhood satisfaction varied in residents of different housing types and living environment was a significant predictor of resident’s QOL. Other than the architecture of housing, this paper highlights the importance of services and facilities for the development of social relations and community building. This paper may supplement to the Western QOL studies and provide reference for urban planning initiatives for Asian cities.","PeriodicalId":44260,"journal":{"name":"Asian Geographer","volume":"35 1","pages":"35 - 51"},"PeriodicalIF":0.0,"publicationDate":"2018-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10225706.2017.1406863","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49514537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-02DOI: 10.1080/10225706.2018.1431554
K. O'Connor, K. Fuellhart, Shengrun Zhang
ABSTRACT Air transport has been expanding rapidly in China over the past decade. That growth corresponded with economic development as well as liberalization in the regulations surrounding airline operations and city and provincial responsibilities for air transport infrastructure. This paper analyses the way the airline industry responded to those changes by identifying the rank of 37 cities on a series of measures of airline operations in 2005 and 2015. Results show that the ranks of the seven leading cities remain unchanged, and only a small change has been recorded on each of the measures at other cities over this time period. The results suggest that there is a level of inertia in the overall geography of China’s air transport. Closer attention to the activity of the airlines, with particular attention to small and large airlines, as well as those within corporate groups will be an important direction in future research.
{"title":"Change in the role of cities in China’s air transport 2005–2015","authors":"K. O'Connor, K. Fuellhart, Shengrun Zhang","doi":"10.1080/10225706.2018.1431554","DOIUrl":"https://doi.org/10.1080/10225706.2018.1431554","url":null,"abstract":"ABSTRACT Air transport has been expanding rapidly in China over the past decade. That growth corresponded with economic development as well as liberalization in the regulations surrounding airline operations and city and provincial responsibilities for air transport infrastructure. This paper analyses the way the airline industry responded to those changes by identifying the rank of 37 cities on a series of measures of airline operations in 2005 and 2015. Results show that the ranks of the seven leading cities remain unchanged, and only a small change has been recorded on each of the measures at other cities over this time period. The results suggest that there is a level of inertia in the overall geography of China’s air transport. Closer attention to the activity of the airlines, with particular attention to small and large airlines, as well as those within corporate groups will be an important direction in future research.","PeriodicalId":44260,"journal":{"name":"Asian Geographer","volume":"35 1","pages":"1 - 14"},"PeriodicalIF":0.0,"publicationDate":"2018-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10225706.2018.1431554","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49618954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT Southeast China, characterized by a humid subtropical climate, is dominated by dense evergreen broad-leaved forests with the exception for the Changting area, which is one of the most eroded areas in southern China. Various methods have been employed to investigate regional soil erosion dynamics, yet these studies are limited to short periods and few sites. Dendrogeomorphological methods can alleviate this problem due to the long duration of tree rings and easy implementation for many sites. We present the first tree-ring-based soil erosion study in southeastern China, based on 123 exposed roots from 85 Pinus massoniana trees at six sites in Changting. The distinct reduction of cell lumen area of earlywood tracheids of exposed roots is a good bio-indicator for the first year of exposure due to soil erosion for this hot and humid area. The reconstructed soil erosion rates ranged from 4.26 to 43.50 mm/year with an average of 14.14 ± 8.05 mm/year. Soil erosion rate is the highest at the slopes of 10°–30°. This is in line with previous findings using other methods over the study area. In addition, soil erosion in this area is found to be closely related to vegetation types and summer precipitation.
{"title":"Reconstruction of soil erosion rates from exposed roots in southeast China","authors":"Yu Zhang, Keyan Fang, Feifei Zhou, Zhipeng Dong, Yingjun Li, Peng Zhang","doi":"10.1080/10225706.2017.1351380","DOIUrl":"https://doi.org/10.1080/10225706.2017.1351380","url":null,"abstract":"ABSTRACT Southeast China, characterized by a humid subtropical climate, is dominated by dense evergreen broad-leaved forests with the exception for the Changting area, which is one of the most eroded areas in southern China. Various methods have been employed to investigate regional soil erosion dynamics, yet these studies are limited to short periods and few sites. Dendrogeomorphological methods can alleviate this problem due to the long duration of tree rings and easy implementation for many sites. We present the first tree-ring-based soil erosion study in southeastern China, based on 123 exposed roots from 85 Pinus massoniana trees at six sites in Changting. The distinct reduction of cell lumen area of earlywood tracheids of exposed roots is a good bio-indicator for the first year of exposure due to soil erosion for this hot and humid area. The reconstructed soil erosion rates ranged from 4.26 to 43.50 mm/year with an average of 14.14 ± 8.05 mm/year. Soil erosion rate is the highest at the slopes of 10°–30°. This is in line with previous findings using other methods over the study area. In addition, soil erosion in this area is found to be closely related to vegetation types and summer precipitation.","PeriodicalId":44260,"journal":{"name":"Asian Geographer","volume":"34 1","pages":"105 - 91"},"PeriodicalIF":0.0,"publicationDate":"2017-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10225706.2017.1351380","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42047982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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