Since Mrner presented his geoidal eustatic change theory in 1976, attention has been paid to the effects of geoid changes on sea level, but up to now no one has discussed the geoid changes and geoidal eustasy in China...Since Mrner presented his geoidal eustatic change theory in 1976, attention has been paid to the effects of geoid changes on sea level, but up to now no one has discussed the geoid changes and geoidal eustasy in China. This note reports the author’s work in this aspect.展开更多
The environmental changes during the Late Pleistocene were more obvious in the eastern China than in other areas at the same latitude, which either between northern and southern, or between land and sea of the eastern...The environmental changes during the Late Pleistocene were more obvious in the eastern China than in other areas at the same latitude, which either between northern and southern, or between land and sea of the eastern China were mostly non-synchronous. The transitional period prior to the last glaciation came about in the northern part of the eastern China about 115,000 yr. ago. The desert environments of the inland of the north China were developed both in the glacial maximum and in the warm interglacial period, but the loess accumulation mostly took place during the glacial period. The sand dunes and the periglacial solifluctions in the lower Changjiang (Yangtze) River region were formed during the last glacial period. The event of lowest surface temperature occurred at 98,000 yr. B.P. and 59,000 yr. B.P. in the northern part of the South China Sea but not during the full-glacial stage. The phenomena mentioned . above were the result of the following reasons that the paleo-environmental changes in展开更多
Ruoergai Plateau (32°20′—34°10′, 102°15′—103°50′), 3600m above sea level, is located in the eastern part of the Qinghai-Xizang Plateau. It is the major region in China for high-altitude peat ...Ruoergai Plateau (32°20′—34°10′, 102°15′—103°50′), 3600m above sea level, is located in the eastern part of the Qinghai-Xizang Plateau. It is the major region in China for high-altitude peat deposition with thickness that varies from 2—3m to over 10m. Such thick peat deposition is one of the best ideal materials for the research on the environmental changes since the Late Glacial in the eastern part of Qinghai-Xizang Plateau, because in peat is reserved abundant information about environmental changes. The展开更多
Dramatic water stage rise and channel aggradation in the middle and lower reaches of the Changjiang (Yangtze) River have been recognized by previous studies. A further analysis of the data from geological, geomorpholo...Dramatic water stage rise and channel aggradation in the middle and lower reaches of the Changjiang (Yangtze) River have been recognized by previous studies. A further analysis of the data from geological, geomorphological, and paleohydrological surveys suggests that these changes might have resulted from sea-level rise since the Lateglacial period. So a mathematical model has been developed here, which reconstructs the processes of water-stage rise and channel aggradation of the Changjiang River as responses to sea-level rise since 12,100 a B.P.展开更多
We acquired a preliminary knowledge of the relationship between sedimentary environments and the features of foraminifera after the research into the distribution and formation processes of foraminiferal taphocoenosis...We acquired a preliminary knowledge of the relationship between sedimentary environments and the features of foraminifera after the research into the distribution and formation processes of foraminiferal taphocoenosis in the Changjiang River deltaic area. And on展开更多
Most cosmic dusts possess distinctive surfacial textures. The investigation on these textures greatly contributes to the research of ablation for meteorite and the geneses of cosmic dusts.
Land suitability evaluation is fundamental in deciSion-making on land use planning. In 1976, FAO published A framework for land evaluation in which the procedures and methods of land suitability evaluation were explai...Land suitability evaluation is fundamental in deciSion-making on land use planning. In 1976, FAO published A framework for land evaluation in which the procedures and methods of land suitability evaluation were explained. However, the framework is basically a qualitative one and it is difficult to make a direct connection of evaluation results with decision-making on land use planning. Dent and Young pointed out that it is possible to conduct an automatic land suitability evaluation by the aid of computer, but the approach is only limited in computer processing or land evaluation data. The present study is an attempt to apply the Geographic Information System of GIS technology to improve the efficiency and precision of the evaluation to decision-making on land use planning.展开更多
文摘Since Mrner presented his geoidal eustatic change theory in 1976, attention has been paid to the effects of geoid changes on sea level, but up to now no one has discussed the geoid changes and geoidal eustasy in China. This note reports the author’s work in this aspect.
文摘The environmental changes during the Late Pleistocene were more obvious in the eastern China than in other areas at the same latitude, which either between northern and southern, or between land and sea of the eastern China were mostly non-synchronous. The transitional period prior to the last glaciation came about in the northern part of the eastern China about 115,000 yr. ago. The desert environments of the inland of the north China were developed both in the glacial maximum and in the warm interglacial period, but the loess accumulation mostly took place during the glacial period. The sand dunes and the periglacial solifluctions in the lower Changjiang (Yangtze) River region were formed during the last glacial period. The event of lowest surface temperature occurred at 98,000 yr. B.P. and 59,000 yr. B.P. in the northern part of the South China Sea but not during the full-glacial stage. The phenomena mentioned . above were the result of the following reasons that the paleo-environmental changes in
文摘Ruoergai Plateau (32°20′—34°10′, 102°15′—103°50′), 3600m above sea level, is located in the eastern part of the Qinghai-Xizang Plateau. It is the major region in China for high-altitude peat deposition with thickness that varies from 2—3m to over 10m. Such thick peat deposition is one of the best ideal materials for the research on the environmental changes since the Late Glacial in the eastern part of Qinghai-Xizang Plateau, because in peat is reserved abundant information about environmental changes. The
文摘Dramatic water stage rise and channel aggradation in the middle and lower reaches of the Changjiang (Yangtze) River have been recognized by previous studies. A further analysis of the data from geological, geomorphological, and paleohydrological surveys suggests that these changes might have resulted from sea-level rise since the Lateglacial period. So a mathematical model has been developed here, which reconstructs the processes of water-stage rise and channel aggradation of the Changjiang River as responses to sea-level rise since 12,100 a B.P.
文摘We acquired a preliminary knowledge of the relationship between sedimentary environments and the features of foraminifera after the research into the distribution and formation processes of foraminiferal taphocoenosis in the Changjiang River deltaic area. And on
基金Project supported by the National Natural Science Foundation of China.
文摘Most cosmic dusts possess distinctive surfacial textures. The investigation on these textures greatly contributes to the research of ablation for meteorite and the geneses of cosmic dusts.
基金Project supported by the National Natural Science Foundation of China
文摘Land suitability evaluation is fundamental in deciSion-making on land use planning. In 1976, FAO published A framework for land evaluation in which the procedures and methods of land suitability evaluation were explained. However, the framework is basically a qualitative one and it is difficult to make a direct connection of evaluation results with decision-making on land use planning. Dent and Young pointed out that it is possible to conduct an automatic land suitability evaluation by the aid of computer, but the approach is only limited in computer processing or land evaluation data. The present study is an attempt to apply the Geographic Information System of GIS technology to improve the efficiency and precision of the evaluation to decision-making on land use planning.
