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Assessment of soil and soil-water salinity in Ben Tre province by electromagnetic technology
ABSTRACT Assessment of soil and soil-water salinity is essential in agricultural production, therefore it is necessary to find out the non-costly, effective, rapid and reliable integrated methodology for this purpose. The paper presents the results of using the electromagnetic induction instrument EM31-MK2 in combination with collecting and an...
10 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 418 | Lượt tải: 0
Assessment of impacts of utilization on water resources in the basin of trans-boundary Red river system
Abstract The Red river system is the large trans-boundary river system, there has been no united system of hydrology stations as well as integrated plan for the water use and management in the whole basin. The trend of water resources change in the Red river system basin has been assessed on the basic of statistic analyses of data observed duri...
9 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 409 | Lượt tải: 0
Research on wave regimes at the Cua Dai estuary, Quang Nam
Abstract In coastal area of the Cua Dai estuary - Quang Nam province, the processes of erosion-accretion strongly occur. Over this area, the ocean wave is a dynamical factor that directly affects the coastal areas causing erosion-accretion processes. This paper presents an evaluation of the ocean wave regime impacting the areas of Cua Dai estua...
8 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 424 | Lượt tải: 0
Establishing an empirical equation for the relationship between total suspended solids and total phosphorus concentrations in the downstream Red river water
Abstract Recently, the Asian rivers have faced the strong reduction of riverine total suspended solids (TSS) flux due to numerous dam/reservoir impoundment. The Red river system is a typical example of the Southeast Asian rivers that has been strongly impacted by reservoir impoundment in both China and Vietnam, especially in the recent period. ...
8 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 505 | Lượt tải: 0
GIS based frequency ratio method for landslide susceptibility mapping at Da Lat City, Lam Dong province, Vietnam
ABSTRACT Landslide susceptibility mapping of the city of Da Lat, which is located in the landslide prone area of Lam Dong province of Central Vietnam region, was carried out using GIS based frequency ratio (FR) method. There are number of methods available but FR method is simple and widely used method for landslide susceptibility mapping. In the ...
12 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 417 | Lượt tải: 0
Some features of marine dynamics caused by Damrey Typhoon (11/2017) and its impacts on coral reef in Ninh Van waters, Khanh Hoa province
Abstract Typhoon Damrey (Vietnamese name is Typhoon No. 12 in 2017) landed in Southern Phu Yen - Northern Khanh Hoa in the morning of 4th Nov 2017 causing severe damage to people, material and serious consequences on the socio-economy of the region (especially Khanh Hoa Province). So far, there have been no published papers and reports on the r...
11 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 467 | Lượt tải: 0
Water resources potential in Co To island and exploitation orientation to use
Abstract Co To is an island of the Co To district in Quang Ninh province with an area of about 18 km2. Average rainfall on the island is 1,738.8 mm/yr, evaporation is 925 mm/yr. On the island, there are some small streams but they are temporary flow in the rainy season, there is not any natural lakes. There are 2 aquifers. The Quaternary aquife...
8 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 514 | Lượt tải: 0
The effects of projects of dredging and recovering saline sand at estuaries in Binh Thuan - Ninh Thuan provinces
Abstract According to statistics in Binh Thuan - Ninh Thuan provinces, there are 4 projects of dredging and recovering saline sand at estuaries such as La Gi, Ca Ty, Phan Ri Cua and Dong Hai. These projects use dredging plans by sand suction vessel and scraper bucket to scoop sand on barges, then sand is transferred to ships for exportation or ...
12 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 494 | Lượt tải: 0
The capability of organic matter decomposition and nutrient uptake in coastal waters of Ca Na bay, Ninh Thuan province
Abstract This paper focuses on the capability of organic matter decomposition and inorganic nutrient uptake in the coastal waters of Ca Na bay (Ninh Thuan province) in October, 2018 (the rainy season) and May, 2019 (the dry season). The results of laboratory experiments on organic decomposition, photosynthesis and nutrient uptake showed that th...
11 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 393 | Lượt tải: 0
Some issues of geomorphology to serve coastal environmental management of Quang Nam province
Abstract This paper presents the results of studies on the coastal geomorphological processes, which have been happening, to serve the coastal environmental management of Quang Nam province. Research results show that the geomorphological process is mainly destruction or coastal erosion, which has been occurring in most of the shores formed by ...
13 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 564 | Lượt tải: 0

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