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The effects of salinity on changes in characteristics of soils collected in a saline region of the Mekong Delta, Vietnam
Open Chemistry ( IF 2.3 ) Pub Date : 2021-01-01 , DOI: 10.1515/chem-2021-0037 Lam Van Tan 1, 2 , Tran Thanh 1
Open Chemistry ( IF 2.3 ) Pub Date : 2021-01-01 , DOI: 10.1515/chem-2021-0037 Lam Van Tan 1, 2 , Tran Thanh 1
Affiliation
Due to the impacts of climate change and the reduction in the flow of the Mekong River, saline intrusion into the inland has been an emergent and pressing issue. The purpose of this study is to analyze the effects of various saline conditions (0–25‰) on changes in some soil properties under laboratory conditions. Ten topsoil samples were collected from a depth of 0–20 cm in the dry seasons in the rice–corn rotation fields with low salinity, in Thanh Phu district, Ben Tre province, Vietnam. The examined criteria consisted of soil pH, soil electrical conductivity of the saturated paste extract (ECe), exchangeable Na, percentage of exchangeable Na, and content (%) of nitrogen and phosphorus. The results revealed that the pH range of soil decreased from 5.14–5.72 to 4.08–5.14 when the soil salinity increased from 0 to 25‰. At the salinity of 10‰ and higher, the available nitrogen began to decline. Meanwhile, the available phosphorus tended to decrease as the salinity increased past 12‰. Some measures are also discussed, with the aim of ensuring sustainable rice farming in the circumstances of increased salinity.
中文翻译:
盐度对越南湄公河三角洲盐渍区土壤特征变化的影响
由于气候变化的影响和湄公河流量的减少,盐分侵入内陆已经成为一个紧迫的问题。本研究的目的是分析实验室条件下各种盐分条件(0-25‰)对某些土壤性质变化的影响。在越南槟知省清富县,在低盐度的稻玉米轮作田中,在旱季从0–20 cm的深度收集了十个表土样品。检验标准包括土壤pH值,饱和糊状提取物(ECe)的土壤电导率,可交换的Na,可交换的Na的百分比以及氮和磷的含量(%)。结果表明,当土壤盐分从0增加到25‰时,土壤的pH值范围从5.14-5.72降低到4.08-5.14。在盐度为10‰或更高时,可用氮开始下降。同时,随着盐分增加超过12‰,有效磷趋于减少。还讨论了一些措施,目的是在盐度增加的情况下确保可持续的水稻种植。
更新日期:2021-01-01
中文翻译:
盐度对越南湄公河三角洲盐渍区土壤特征变化的影响
由于气候变化的影响和湄公河流量的减少,盐分侵入内陆已经成为一个紧迫的问题。本研究的目的是分析实验室条件下各种盐分条件(0-25‰)对某些土壤性质变化的影响。在越南槟知省清富县,在低盐度的稻玉米轮作田中,在旱季从0–20 cm的深度收集了十个表土样品。检验标准包括土壤pH值,饱和糊状提取物(ECe)的土壤电导率,可交换的Na,可交换的Na的百分比以及氮和磷的含量(%)。结果表明,当土壤盐分从0增加到25‰时,土壤的pH值范围从5.14-5.72降低到4.08-5.14。在盐度为10‰或更高时,可用氮开始下降。同时,随着盐分增加超过12‰,有效磷趋于减少。还讨论了一些措施,目的是在盐度增加的情况下确保可持续的水稻种植。