Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 418419
Title Soil salinity development in the Yellow River Delta in relation to groundwater dynamics
Author(s) Fan Xiaomei, ; Pedroli, B.; Liu Gaohuan, ; Liu Qingsheng, ; Liu Hongguang, ; Shu Longcang,
Source Land Degradation and Development 23 (2012)2. - ISSN 1085-3278 - p. 175 - 189.
DOI https://doi.org/10.1002/ldr.1071
Department(s) Land Dynamics
CL - Crossing Borders
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) remote-sensing data - salt-affected soils - salinization - indicators - vegetation - wetland - land
Abstract The Yellow River Delta occupies an important position in the global ecosystem because of its valuable wetland habitat resources for migratory birds on the Eastern Pacific migration route. However, it has suffered from severe land degradation because of soil salinization. This paper assesses the distribution maps of saline soils during the past two decades, using field observations at three points in time using remote sensing images for the same periods, in combination with spatial models. Soil salinization appears to have expanded from the coastline to inland areas of the Yelow River Delta at a surprising speed during that period. The spatio-temporal dynamics of the groundwater table and total dissolved solids (TDS) during the last 20 years were analyzed using maps based on Kriging interpolation. Kriging helped substantially to improve the accurateness of the predicted values of soil salt content, using a random subsample of the observation points as validation basis. Correlation analysis of the spatial data revealed that the distribution and evolution of saline soils are closely related to the dynamics of groundwater: the aggravation of soil salinization is associated with a rising groundwater table and increasing TDS. Insufficient recharge of the groundwater with fresh surface water due to reduced Yellow River discharge and subsequent seawater intrusion are therefore serious environmental problems in the Yellow River Delta ecosystem
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