When agricultural land gradually decreases, assessing the efficiency of arable land use has scientific and practical significance. It provides information and data for regional planning. The land fund of Binh Son district, Quang Ngai province, is almost thoroughly exploited.  Unused land occupies just 0.6% of the total area (46,685.24 ha). Research on thirteen major crops in Binh Son district indicates that chilli, squash, and watermelon have the highest economic efficiency with a profit (VA) of 126.7, 90.1, and 87 million VND/ha/crop, respectively. Their profit is 9.0, 6.5, and 6.3 times that of rice. Also, their capital efficiency is relatively high at 1.35–1.45. However, watermelon is subjected to more risks than chilli and squash because of market instability. Cucumbers, melon, red pumpkin, corn, peanuts, green beans, sugarcane, and cassava have medium to low economic efficiency (18.2 to 41.1 million VND/ha/crop). The lowest economic efficiency is found with rice (11.6 million VND/ha/crop). Generally, farmers apply fertilizers unreasonably and out of balance. Applying a low quantity of organic fertilizers and a high amount of inorganic fertilizers (especially nitrogen fertilizer) causes soil degradation. Therefore, local authorities should encourage farmers to adjust their fertilizer application to prevent soil degradation and health risks.

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Population growth is one factor relevant to land-use transformation and expansion in urban areas. This creates a regular mission for local governments in evaluating land resources and proposing plans based on various scenarios. This paper discussed the future trend of three kinds of land-use in the five central coast provinces. Afterwards, the paper deployed machine learning such as Multivariate Adaptive Regression Splines (MARS), Random Forest Regression (RFR), and Lasso Linear Regression (LLR) to analyze the trend of rural land use and industrial land-use to urban land-use in the Central Coast Region of Vietnam. The input variables of land-use from 2010 to 2020 were obtained by the five provinces of the Department of Natural Resources and Environment (DONRE). The results showed that these models provided pieces of information about the relationship between urban, rural, and industrial land-use change data. Furthermore, the MARS model proved to be accurate in the Quang Binh, Quang Tri, and Quang Nam provinces, whereas RFR demonstrated efficiency in the Thua Thien-Hue province and Da Nang city in the fields of land change prediction. Furthermore, the result enables to support land-use planners and decision-makers to propose strategies for urban development.

This research attempts to clarify the characteristics of the "poor" households in Phu An Commune, located on the shore of Tam Giang Lagoon, Central Vietnam. To understand the socioeconomic background of poverty in the area, the authors examine the changes in agriculture as well as shrimp aquaculture since the adoption of "Doi Moi", an open-door policy, in 1986. Then, the constraints which make it difficult for them to escape from poverty are discussed. The results of this study show that agricultural and aquacultural changes have diversified the locals' livehoods. The positive changes are reflected in the decline of the number of "poor" households as well as in their evaluation of their lives compared with 20 years ago. Nevertheless, there are still many constraints which cause the "poor" households to remain poor in spite of the remarkable economic growth during the last 20 years. Insight into the detailed situation of poverty in the area is given through the categorization of the residents by their livelihood: mobile gear fishing (usually called "Sampan people"), fixed gear fishing, farming, farming and fishing, and service. In the process of the "Doi Moi" policy and following the introduction of shrimp aquaculture around 1999, the water surface of Tam Giang Lagoon, which used to be an open-access common resource, was allocated to individuals for their exclusive use and exploited mainly for shrimp aquaculture. Due to these drastic changes in local resource, the "Sampan people", who have been engaged in only fishery in Tam Giang Lagoon, have changed their position in the commune from the greatest beneficiaries to those of sacrifices. Now the poorest in this area are those who engage in mobile gear fishing, the "Sampan people".

This study breaks away from traditional macroeconomic-data-based research that often overlooks the subjective experiences of communities and social groups in assessing their resilience to external stressors. Instead, we conducted a nuanced analysis of self-assessments provided by 364 household heads in the Nam Dong District, Thua Thien Hue Province, Vietnam, to gain a comprehensive understanding of household resilience. Our investigation focused on two upland communities—the Kinh majority and Co Tu ethnic minority households—evaluating their resilience levels in terms of the five livelihood capitals and identifying significant disparities among different ethnic and gender groups. Our findings reveal notable differences in livelihood resilience to climate change and variability among these groups, particularly for women, the poor, and ethnic minorities who exhibit lower resilience levels. This underscores the need for policies and programs designed to improve resilience capacity while taking into account these groups’ cultural and social norms. We suggest focusing on improving financial, human, and social capitals to increase households’ resilience to external shocks. Specifically, building resilience for disadvantaged groups must go hand in hand with promoting their overall well-being and alleviating poverty. Additionally, we recommend tailored training programs to raise awareness among households and strengthening institutional systems to enhance overall resilience.