The recent history of hydro-geomorphological processes in the upper Hangbu river system, Anhui Province, China

Dai, Xiaoyan; Dearing, John A.; Yu, Lizhong; Zhang, Weiguo; Shi, Yuxin; Furui, Zhang; Gu, Chengjun; Boyle, John; Coulthard, Tom; Foster, Gregory D.

doi:10.1016/j.geomorph.2008.11.016

Cited by 18 publications

(17 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…5 and 6), similar to what was commonly found in other parts of Guizhou Plateau (Zhu et al, 1997), other provinces in south China (e.g. Lu, 2000;Dai et al, 2009) and many other parts of the world (e.g. Dearing et al, 1986;van der Post et al, 1997;De Jong et al, 1998;Royall, 2001;Royall, 2004), are likely to be helpful for identifying sediment sources and hence erosion types and/or relative-intensities as demonstrated in other similar studies elsewhere (e.g.…”

Section: On Mineral Magnetismsupporting

confidence: 85%

“…By sampling, dating, analysing and measuring sediments of rivers, lakes and reservoirs, it is possible to infer soil erosion during the recent past and modern time and connect these records to contemporary observations (e.g. Walling et al, 1979;Foster et al, 1986;Dearing and Foster, 1993;de Boer, 1997;Foster et al, 2007;Dai et al, 2009). Mineral magnetic techniques are particularly helpful for inferring sources of these sediments (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Mineral magnetic techniques are particularly helpful for inferring sources of these sediments (e.g. Walling et al, 1979;Caitcheon, 1993;Yu and Oldfield, 1993;Foster et al, 1998;Dai et al, 2009). There are 352 small reservoirs with drainage areas of several to tens of km 2 and storage volumes of 10 6 to 10 7 m 3 constructed in 1958 and subsequent years in Guizhou Plateau.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparing mineral magnetic properties of sediments in two reservoirs in “strongly” and “mildly” eroded regions on the Guizhou Plateau, southwest China: A tool for inferring differences in sediment sources and soil erosion

Wang

Sun

et al. 2011

Geomorphology

View full text Add to dashboard Cite

Section: On Mineral Magnetismsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparing mineral magnetic properties of sediments in two reservoirs in “strongly” and “mildly” eroded regions on the Guizhou Plateau, southwest China: A tool for inferring differences in sediment sources and soil erosion

Wang

Sun

et al. 2011

Geomorphology

View full text Add to dashboard Cite

“…Since the beginning of the 1950s, many reservoirs have been built in the upper reach of the lake catchments. More particles were deposited in reservoirs causing high MAR [22], nevertheless fewer particles were discharged into the lake. On the other hand, the precipitation was low around 1950 AD, and fewer particles were loaded by runoffs.…”

Section: Dating Lake Sediment Of Longgan Lake Under the Impacts Of Humentioning

confidence: 98%

Geochronology of recent lake sediments from Longgan Lake, middle reach of the Yangtze River, influenced by disturbance of human activities

Liu

Bing

et al. 2010

Sci. China Earth Sci.

View full text Add to dashboard Cite

The impacts of human activities in Longgan Lake region on the distribution of 210 Pb in lake sediment made it difficult to establish geochronological sequence. However, environmental proxies recorded these human activities and could be used as time marker to check 210 Pb dating results. Based on the analysis of 210 Pb exc distribution in cores LS-1 and LGL-1, and in combination with the human activities records in grain-size and element concentration, the sedimentation rates in the upper layers of these two cores were determined to be 0.19 and 0.23 cm/a respectively. The MAR (mass accumulation rates) of these two cores demonstrated that natural condition, such as precipitation and runoffs, led to the variation of MAR before human disturbance, and human activities controlled the sedimentary processes afterwards, which obviously reduced the particles influx into the lakes. During 1940s when human activity had not changed the water system within the catchment, 210 Pb activity was abnormally strong in lakes along middle to lower reaches of the Yangtze River, which might be attributed to less precipitation and can be used as a time marker for geochronological research. 210 Pb, geochronology, environmental index, human activity, Longgan Lake Citation:Wu Y H, Liu E F, Bing H J, et al. Geochronology of recent lake sediments from Longgan Lake, middle reach of the Yangtze River, influenced by disturbance of human activities.

show abstract

“…That resulted in a peak suspended sediment concentration in inlet of the lake, which extended to center lake area following with lake flow. The high suspended sediment around lakes bank was mainly caused by landslip [40]. High organic matter was mainly distributed by cyanobacteria bloom, and accumulated by lake flow.…”

Section: Inversion and Spatial Distribution Of Suspended Sediment Conmentioning

confidence: 99%

Estimation of suspended sediment concentration based on bio-optical mechanism and HJ-1 image in Chaohu Lake

Wang

Jin

et al. 2010

Sci. China Earth Sci.

View full text Add to dashboard Cite

Synchronization experiment was conducted in June, 2009 to get Inherent Optical Properties (IOP) of water component in Chaohu Lake. Water bio-optical mechanism was studied combined with multispectral data of Environmental Satellite 1 (CCD), and then inversion models of total suspended matter (TSM), inorganic suspended matter (ISM) and organic suspended matter (OSM) concentration were built. The data indicated that: the absorption ratio of suspended particulate matter and CDOM to total were almost no change from band 1 to band 2 with about 85% and 9%, respectively. The ratio of pure water to total increased from 0.4% to 5.6%. Water reflectance in these two bands were influenced by absorption of three kinds of components: algae particles absorption surpassed non-algal particles in band 3, and so played an important role in total absorption with about 35.7%; the proportion of pure water absorption and particles matter backscattering both were 99% in band 4, so these two components decided the main inherent optical properties in band 4. The models of TSM and ISM concentration inversion based on band combination (band 3 + band 4)/(band 1 + band 2) were built, while OSM concentration was estimated by band 4/ (band 1 + band 2) index. Inversed by image data, RE of TSM concentration between modeled and measured was 33.4%, and RMSE was 18.68 mg/L. RE of ISM and OSM concentration were 39.9% and 35.2% respectively. The inversion was more accurate when satellite-ground data were just in the same day. At this situation, RE of ISM concentration dropped to 25.4%, and that of TSM and OSM reduced to 26.5% and 26.8% as well. HJ-1 Satellite, bio-optical property, Chaohu Lake, suspended matter Citation:Wang Q, Jin X, Li Y M, et al. Estimation of suspended sediment concentration based on bio-optical mechanism and HJ-1 image in As it is well known, water columns show weak remotely sensed signals owing to its strong absorption. Therefore, accurate retrievals of chlorophyll concentrations, suspended matter concentrations and others are always difficult tasks in the field of water color remote sensing. The increase of suspended matter content in waters can induce corresponding increase of spectral reflectance, which supports a chance for extracting suspended matter information. However, the collected spectral reflectance reflect mixtures of multiple material information, such as chlorophyll, colored dissolved organic matter (CDOM), which increase difficulty of extracting suspended matter contents in waters. Thus to accurately derive suspended sediment concentration, a key point is to explore optical parameter which can enhance suspended matter information to a large extent, and can also effectively decrease interference from other water components [1]. Many scholars proposed inversion models with different band combinations and image data from different sensors.

show abstract

The recent history of hydro-geomorphological processes in the upper Hangbu river system, Anhui Province, China

Cited by 18 publications

References 38 publications

Comparing mineral magnetic properties of sediments in two reservoirs in “strongly” and “mildly” eroded regions on the Guizhou Plateau, southwest China: A tool for inferring differences in sediment sources and soil erosion

Comparing mineral magnetic properties of sediments in two reservoirs in “strongly” and “mildly” eroded regions on the Guizhou Plateau, southwest China: A tool for inferring differences in sediment sources and soil erosion

Geochronology of recent lake sediments from Longgan Lake, middle reach of the Yangtze River, influenced by disturbance of human activities

Estimation of suspended sediment concentration based on bio-optical mechanism and HJ-1 image in Chaohu Lake

Contact Info

Product

Resources

About