Assessing the combined impacts of dams upstream, climate change, drought, tide, and sea level rise on the temporal variation of paddy land in Tien Giang province

Environmental changes have become a global issue of universal interest because of its influence sphere and effect level on humanity The Mekong River Delta, in general, and Tien Giang Province, in particular, play a crucial role in providing food to Viet Nam and all over the world more broadly. However, there have been fluctuations in planted areas of rice and rice output in recent decades due to the damaging consequences of many natural and man-made agents. In this study, partial least-squares (PLS) regression was applied for quantitative analysis in the combined impact of dams upstream, climate change, drought, rising tide and sea level on change of paddy land; the geo-statistic was used for demonstrating the linear of variations among components in the mentioned nexus. Then, the impact factor, flowchart and equation were established for demonstrating their influences on the planted area of rice in the province. The results showed that the hydropower dams are the largest agent which create the variations of paddy land in the study area, by R-2 = 0.726.