Assessing the impact of frequent floodings on the soil quality of paddy fields: multidimensional scaling approach
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Abstract
The increase in flood frequency due to climate change may cause a decrease in the soil quality of paddy fields. The results of the study showed that the multidimensional scaling approach can be used to calculate the soil quality index and assess the impact of frequent flooding on soil quality of paddy fields. Several physical, chemical and biological characteristics of the soil were not significantly different in the paddy fields that were often flooded if compared to those that were not flooded, except for exchangeable kalium content. Frequent flooding on the paddy fields tends to decrease the Soil Quality Index. The Soil Quality Index of paddy fields have a tendency to decrease if the paddy fields were often flooded, either by standing water from rivers or sea water. The Soil Quality Index category of paddy fields that were not flooded was good (86.1). While the Soil Quality Index category of paddy fields that were flooded by rivers was average (62.0) and paddy fields that were flooded by sea water was slightly good (75.8). The leverage attributes of the soil characteristics are exchangeable natrium and kalium, and total phosphorus.
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