Soil salinity development in the yellow river delta in relation to groundwater dynamics
文献类型：SCI/SSCI论文
| 作者 | Liu H. |
| 发表日期 | 2012 |
| 关键词 | soil salinity shallow groundwater table groundwater TDS remote sensing spatial model seawater intrusion PR China remote-sensing data salt-affected soils salinization indicators vegetation wetland land |
| 英文摘要 | 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. Copyright (c) 2011 John Wiley & Sons, Ltd. |
| 出处 | Land Degradation & Development |
| 卷 | 23 |
| 期 | 2 |
| 页 | 175-189 |
| 收录类别 | SCI |
| ISSN号 | 1085-3278 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/26644]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Liu H.. Soil salinity development in the yellow river delta in relation to groundwater dynamics. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
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