Sedimentary Characteristics of Sand Dunes in Cau Ngang and Tra Cu Districts, Tra Vinh Province and Their Freshwater - Bearing Capacity

Lap, Nguyen Van; Oanh, Ta Thi Kim

doi:10.15625/0866-7187/36/2/4494

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“…The sandy soil is a very special and unique ecological area of the Mekong Delta with a total area of 48822 hectares, accounting for 1.2% of the total natural land area of the region (Hoang et al, 2018). This type of soil is usually composed of fine sand with compacted soil, non-toxic, easy to drain, so it is not flooded in the rainy season and is settled by people to live and build villages, hamlets, roads and farming crops (Lap and Oanh, 2014). Due to the high drainage capacity, the amount of water and dissolved substances in the sandy soil can be quickly lost.…”

Section: Introductionmentioning

confidence: 99%

Characterizing Physical and Chemical Properties of Sandy Soil in Vietnamese Mekong Delta Province

Truong¹,

Giao²

2023

Ecol. Eng. Environ. Technol.

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The study aimed to evaluate the physical and chemical properties of the sandy soil group in Vung Liem and Tra On districts, Vinh Long province, Vietnam. Soil quality parameters were bulk density, soil acidity, total organic matter (OM%), mechanical composition (sand, fined sand, limonite, clay), cation exchange capacity (CEC), total nitrogen (TN), total phosphorus (TP), readily digestible potassium (K 2 O), total sulfur (SO 4 2-), total soluble salts, density, pH H2O , electrical conductivity (EC), easily digestible phosphorus (P 2 O 5 ), exchangeable cations (K + , Na + , Mg 2+ , Ca 2+ , Al 3+ , Mn 2+ , Zn), soil buffering capacity, buffered (BaCl 2 buffered at pH 8.2 and unbuffered CEC, saturated extracted cations (K + , Na + , Mg 2+ , Ca 2+ ), dissolved aluminum (Al 3+ ) and soil structural stability. The analysis results showed that the sandy soil in the study area has low natural fertility due to light mechanical composition, high percentage of sand; organic matter and nutrients content (total N, total K, P 2 O 5 ), CEC, cations and trace elements were from low to moderate. In addition, the soil's bulk density and density were relatively high; the porosity, buffering capacity and soil structure strength were low. However, the total P content in the sandy soil was very rich. The research results provide important scientific information of sandy soil properties for community's development of essential crops.

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Section: Introductionmentioning

confidence: 99%