Scholarlink

<p>As the third-largest rice exporter globally, 90% of Vietnam’s rice exports come from the Mekong Delta. However, while global cultivated land has expanded since this century, both the area and yield of paddy rice in the Vietnam Mekong Delta (VMD) have declined, equivalent to the rations for 8.7 million people. Utilizing remote sensing and annual land use trajectories to quantify contributions, we estimate that, when excluding urban conversions, 25.14% of VMD paddy field loss directly stems from salinity and drought stress, while 74.86% involves indirect links to these stressors alongside economic drivers. Severe drought and salinity intrusion events are mainly influenced by El Nino. Sediment starvation combined with sea level rise is the main factor leading to the long-term trends of salinity intrusion. The results of this study will offer advice for adaptation policy development in the VMD and other similar regions.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Quantifying salinity and drought drive forces on paddy field loss in the Mekong Delta, Vietnam

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年7月1日

查看全文
  • Quan Wang,
  • Kun Yang,
  • Yanhui Zhu,
  • Zongqi Peng,
  • Siyu Chen,
  • Danni Su,
  • Mengzhu Sun

摘要

As the third-largest rice exporter globally, 90% of Vietnam’s rice exports come from the Mekong Delta. However, while global cultivated land has expanded since this century, both the area and yield of paddy rice in the Vietnam Mekong Delta (VMD) have declined, equivalent to the rations for 8.7 million people. Utilizing remote sensing and annual land use trajectories to quantify contributions, we estimate that, when excluding urban conversions, 25.14% of VMD paddy field loss directly stems from salinity and drought stress, while 74.86% involves indirect links to these stressors alongside economic drivers. Severe drought and salinity intrusion events are mainly influenced by El Nino. Sediment starvation combined with sea level rise is the main factor leading to the long-term trends of salinity intrusion. The results of this study will offer advice for adaptation policy development in the VMD and other similar regions.