The geomorphological environment is one of the most fundamental variables affecting the development of human society. The mission of geomorphological environment research is to explore the most basic environment and f...The geomorphological environment is one of the most fundamental variables affecting the development of human society. The mission of geomorphological environment research is to explore the most basic environment and features of our Earth＇s surface morphology. The results can be applied to resource evaluation, environmental protection and reducing and preventing geological disasters. Thus, it can serve to help achieve sustainable development. This paper examines the Shenzhen east coastal zone as a case strongly influenced by urban expansion. We use modern geomorphological theory and methods, along with GIS and RS techniques, to reveal key characteristics of the geomorphological environment and landform classification. Furthermore, coastal ecosystem evaluation and regional resources sustainable utilization should be considered relative to the corresponding geomorphological environment. Based on this study, we conclude that modern geomorphological theory and methods, supported by ＂3S＂ techniques including GIS, RS and GPS, can play an important role in resolving the environment, resources and population problems as well as sustainable development challenges facing humankind at present.展开更多
The Han River Delta of 915.08 km^2 area is the sixth largest in China, lying on the southeast coast of China. It has been known to start developing during the middle Late-Pleistocene, and the recent landscape has form...The Han River Delta of 915.08 km^2 area is the sixth largest in China, lying on the southeast coast of China. It has been known to start developing during the middle Late-Pleistocene, and the recent landscape has formed gradually since the late stage of Middle-Holocene. Based on detailed investigation in field, sedimentary facies analysis of outcrop sediment samples, interpretation of aerial photographs展开更多
Natural and unnatural factors would develop coastal areas. Coastal area is a region that takes materials and substances from land surface then transfers them to sea and the remained and cumulative substances of them w...Natural and unnatural factors would develop coastal areas. Coastal area is a region that takes materials and substances from land surface then transfers them to sea and the remained and cumulative substances of them would deform under the effect of erosion forming the coasts appearance. Geomorphology is the study of land and process leading to formation and development of it. Coastal geomorphology emphasizes on formation of coastal areas and some processes such as waves, tides, and stream leading to formation of boulders, coral reefs and sandy beaches. The base of this study is on analytical comparison method of affecting variables on periodic change of shoreline in river estuary in which statistical and image data were analyzed. This research was conducted within three time intervals including 1955-1988, 2000-2006, and 2006-2013. Wind hourly data of Meteorological Organization of Iran was used to study waves. The fluctuation in level of Caspian Sea is an important factor in changes in shoreline of Caspian Sea besides the role of river and providing sediment output into the sea. The most area was belonged to 1995 along with declining trend of seal level of Caspian Sea and the lowest area was belonged to 2000 with a rising trend of sea level within three studied intervals. This point indicates the effect of seal level factor on change in area of studied intervals.展开更多
基金Natural Science Foundation of Xi＇an Jiaotong University and China Scholarship Council postgraduate scholarship program Acknowledgements The authors wish to thank Professor Bruce Mithchell, Vice President of University of Waterloo, for improving the manuscript greatly.
文摘The geomorphological environment is one of the most fundamental variables affecting the development of human society. The mission of geomorphological environment research is to explore the most basic environment and features of our Earth＇s surface morphology. The results can be applied to resource evaluation, environmental protection and reducing and preventing geological disasters. Thus, it can serve to help achieve sustainable development. This paper examines the Shenzhen east coastal zone as a case strongly influenced by urban expansion. We use modern geomorphological theory and methods, along with GIS and RS techniques, to reveal key characteristics of the geomorphological environment and landform classification. Furthermore, coastal ecosystem evaluation and regional resources sustainable utilization should be considered relative to the corresponding geomorphological environment. Based on this study, we conclude that modern geomorphological theory and methods, supported by ＂3S＂ techniques including GIS, RS and GPS, can play an important role in resolving the environment, resources and population problems as well as sustainable development challenges facing humankind at present.
文摘The Han River Delta of 915.08 km^2 area is the sixth largest in China, lying on the southeast coast of China. It has been known to start developing during the middle Late-Pleistocene, and the recent landscape has formed gradually since the late stage of Middle-Holocene. Based on detailed investigation in field, sedimentary facies analysis of outcrop sediment samples, interpretation of aerial photographs
文摘Natural and unnatural factors would develop coastal areas. Coastal area is a region that takes materials and substances from land surface then transfers them to sea and the remained and cumulative substances of them would deform under the effect of erosion forming the coasts appearance. Geomorphology is the study of land and process leading to formation and development of it. Coastal geomorphology emphasizes on formation of coastal areas and some processes such as waves, tides, and stream leading to formation of boulders, coral reefs and sandy beaches. The base of this study is on analytical comparison method of affecting variables on periodic change of shoreline in river estuary in which statistical and image data were analyzed. This research was conducted within three time intervals including 1955-1988, 2000-2006, and 2006-2013. Wind hourly data of Meteorological Organization of Iran was used to study waves. The fluctuation in level of Caspian Sea is an important factor in changes in shoreline of Caspian Sea besides the role of river and providing sediment output into the sea. The most area was belonged to 1995 along with declining trend of seal level of Caspian Sea and the lowest area was belonged to 2000 with a rising trend of sea level within three studied intervals. This point indicates the effect of seal level factor on change in area of studied intervals.
