Human impact on floods and flood disasters on the Yangtze River

Yin, Handong; Chang-an, LI

doi:10.1016/s0169-555x(01)00108-8

Cited by 294 publications

(188 citation statements)

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“…Simultaneously, large amounts of silt-laden water are brought by floods which are usually induced by summer monsoon precipitation (JIANG et al, 2007). Serious destruction of vegetation in the upper reaches also added to the silt load (YIN and LI, 2001). Therefore, silt-laden water and residence time resulted in seasonal variation in transparency, explaining the significant correlation found between inflow discharge and transparency.…”

Section: Discussionmentioning

confidence: 99%

Macroinvertebrate Community Structure in Three‐Gorges Reservoir, China

Shao

Xie

Han

et al. 2008

International Review of Hydrobiology

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We investigated the macroinvertebrate community structure in Three-Gorges Reservoir during a three-year period after the reservoir became operational. Comparison with data of previous authors obtained before the damming showed that the benthic community changed drastically in the reservoir. Oligochaetes and chironomids dominate the present community. An apparent annual cycle in the benthic community (expressed as richness, density and community type) was found in the second year, lagging one year behind the annual cycle of transparency. After the second year, a Nais-Polypedilum community type, occurring in winter and spring with low inflow discharge and high transparency, was followed by a Limnodrilus community type that occurred in autumn and summer under contrasting conditions. Despite river regulation and damming, it appeared that macroinvertebrates in subtropical canyon-shaped reservoirs remained influenced by floods.

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Section: Discussionmentioning

confidence: 99%

Macroinvertebrate Community Structure in Three‐Gorges Reservoir, China

Shao

Xie

Han

et al. 2008

International Review of Hydrobiology

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“…Due to long-term exploitation of natural resources, particularly forest resources through most of the latter half of the twentieth century, China experienced a series of severe natural disasters in the late 1990s [Yin and Li, 2001]. As a result, the Chinese government has adopted a series of new forest policies to increase forest conservation and environmental restoration since 2000 [Zhang et al, 2000;Song and Zhang, 2010].…”

Section: Introductionmentioning

confidence: 99%

Effects of land use/land cover and climate changes on terrestrial net primary productivity in the Yangtze River Basin, China, from 2001 to 2010

et al. 2014

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Land use/land cover change (LULCC) and climate change are among the primary driving forces for terrestrial ecosystem productivity, but their impacts are confounded. The objective of this paper is to decouple the effects of LULCC and climate change on terrestrial net primary productivity (NPP) in China's Yangtze River Basin (YRB) during 2001-2010 using a light use efficiency model through different scenario designs. During the study period, the YRB witnessed tremendous LULCC and climate changes. A prominent LULCC was the conversion of shrub land to forests as a result of a series of forest restoration and protection programs implemented in the basin. At the same time, notable warming and drying trends were observed based on ground and satellite measurements. Prescribed model simulations indicated that LULCC alone had a significantly positive effect on total NPP (up to 6.1 Tg C yr À1 , p < 0.01) mainly due to reforestation and forest protection, while climate change alone showed an overall negative effect in the basin (as much as À2.7 Tg C yr À1 , p = 0.11). The ensemble effect of LULCC and climate change on total NPP is approximately 3.9 Tg C yr À1 (p = 0.26) during 2001-2010. Our study provides an improved understanding of the effects of LULCC and climate change on terrestrial ecosystem productivity in the YRB. We found that reforestation and forest protection could significantly enhance terrestrial ecosystem productivity, a strategy that could mitigate global warming. It also suggests that NPP models with static land use/land cover could lead to increasingly large errors with time.

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“…The geomorphic effects of floods are a frequent subject of research in fluvial geomorphology, hydraulic engineering, flood protection and risk management (Gilvear, 1999;Plate, 2002;Yin and Li, 2001;Zielinski, 2003;Magilligan et al, 1998;Cenderelli and Wohl, 2003b;Lapointe et al, 1998;Zimmermann and Church, 2001). Flood hazards Correspondence to: G. Krapesch (gerald.krapesch@boku.ac.at) substantially affect the morphology of river systems in a very short time period (Hooke, 2008;Neuhold et al, 2009;Miller, 1990).…”

Section: Introductionmentioning

confidence: 99%

Scale orientated analysis of river width changes due to extreme flood hazards

Krapesch

Hauer

Habersack

2011

Nat. Hazards Earth Syst. Sci.

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Abstract. This paper analyses the morphological effects of extreme floods (recurrence interval > 100 years) and examines which parameters best describe the width changes due to erosion based on 5 affected alpine gravel bed rivers in Austria. The research was based on vertical aerial photos of the rivers before and after extreme floods, hydrodynamic numerical models and cross sectional measurements supported by LiDAR data of the rivers. Average width ratios (width after/before the flood) were calculated and correlated with different hydraulic parameters (specific stream power, shear stress, flow area, specific discharge). Depending on the geomorphological boundary conditions of the different rivers, a mean width ratio between 1.12 (Lech River) and 3.45 (Trisanna River) was determined on the reach scale. The specific stream power (SSP) best predicted the mean width ratios of the rivers especially on the reach scale and sub reach scale. On the local scale more parameters have to be considered to define the "minimum morphological spatial demand of rivers", which is a crucial parameter for addressing and managing flood hazards and should be used in hazard zone plans and spatial planning.

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Human impact on floods and flood disasters on the Yangtze River

Cited by 294 publications

References 0 publications

Macroinvertebrate Community Structure in Three‐Gorges Reservoir, China

Macroinvertebrate Community Structure in Three‐Gorges Reservoir, China

Effects of land use/land cover and climate changes on terrestrial net primary productivity in the Yangtze River Basin, China, from 2001 to 2010

Scale orientated analysis of river width changes due to extreme flood hazards

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