Yellow River Sediment Response To
Human Disturbance In The Last Century
Author(s)
X. He, J. Zhou, K. Tang & X. Zhang
Abstract
River sediment yield has been widely used as a proxy indicator for assessing
surface erosion rate within the catchment or land degradation. This paper has
investigated a time-series record of sediment yields of the Yellow River back to
the year of 1912. The relationship of sediment yield fluctuation to precipitation
and major human activity events was analyzed. Results show that large-scale
human activities such as the Second World War and the Chinese Culture
Revolution greatly accelerated the soil erosion on the Loess Plateau. However,
dam buildings in the 1970s, implementation of soil conservation in the 1980s and
the runoff failure in the Yellow River in the 1990s caused substantial decrease of
its sediment yield.
Keywords: human activity, erosion dynamics, sediment yield, Loess Plateau,
China.
1 Introduction
The modern accelerated soil erosion, in addition to causing on-site loss of topsoil
and reducing the productivity of the land, also has serious offsite environmental
effects [1, 2]. Furthermore, soil erosion, leading to flood, drought and famine, is
considered to be more than a national disaster as a result of threatening food and
environmental security worldwide, especially in developing countries [2]. Soil
erosion on the Loess Plateau of China, for example, is amongst the highest
(about 100 t ha -1 y -1 ) in the world [3,4]. Here, a large population (82 million in an
Keywords
human activity, erosion dynamics, sediment yield, Loess Plateau,
China.
Related Book
Other papers in this volume
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