预测越南中南部高地气候变化下的干旱压力
Phong Nguyen Thanh1,2, Thinh Le Van3, Xuan Ai Tien Thi3
1Laboratory of Environmental Sciences and Climate Change, Institute for Computational Science and Artificial Intelligence, Van Lang University, Ho Chi Minh City, Vietnam.
Environmental monitoring and assessment
|June 20, 2024
概括
越南的干旱 越南的干旱
科学领域:
- 水文学的水文学
- 气候科学 气候科学
- 农业科学 农业科学
背景情况:
- 越南南部中央高地地区干旱的频率和严重程度正在增加.
- 干旱季节河流和水库水量有限会影响社会经济发展.
- 农业生产非常容易受到水资源短缺的影响.
研究的目的:
- 为了分析兰东省的地表水资源分布.
- 在不同干旱情景下评估农业用水需求.
- 评估气候变化对水资源和干旱严重程度的影响.
主要方法:
- 模拟当前-2020 (SC1) 和气候变化-2025 (SC2) 场景.
- 气候变化和海平面上升数据的整合来自MONRE.
- 应用MIKE-NAM和MIKE-HYDRO盆地模型进行水平衡评估.
- 使用基奇-拜拉姆干旱指数 (KBDI) 来衡量干旱的严重程度.
主要成果:
- 高地地区的干旱和中度干旱条件普遍存在 (50-85%的降雨频率).
- 严重的干旱发生在95%的降雨频率下,表明降雨范围和强度增加.
- 在正常条件下,冬春作物的水需求达到100%,但在中度到极度干旱 (85%至<75%) 的情况下,水需求显著下降.
结论:
- 兰东省面临着日益严重的干旱和地理范围的增加.
- 未来的干旱条件将对农业生产的灌能力产生重大影响.
- 这些发现对于制定该地区有效的干旱适应战略至关重要.
相关概念视频
Responses to Drought and Flooding
10.7K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.7K
What is Climate?
18.4K
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
18.4K
Adaptations that Reduce Water Loss
25.5K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.5K
Responses to Heat and Cold Stress
13.4K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.4K
Responses to Salt Stress
13.1K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
13.1K
Precipitation and Co-precipitation
1.8K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
1.8K


