Hà Nội faces summer water shortages

Update: April, 27/2019 – 09:49 VNA

 

image: http://image.vietnamnews.vn/uploadvnnews/Article/2019/4/27/7679_05-nuoc%20sach.jpg

A truck carrying clean water to serve people suffering from a water shortage in Hà Nội’s Hoàng Mai District. — VNS Photo Đoàn Tùng

HÀ NỘI — As the summer approaches, people in the capital city of Hà Nội again face a dreadful nightmare of urban life – shortage of clean water.

This year, according to the Centre for Hydro-Meteorological Forecasting, the heat wave will be intense and long with temperatures reaching 39-42 degrees Celsius.

The demand for clean water is predicted to increase by 10-15 per cent, or 40,000-60,000 cubic metres during the summer months. Tiếp tục đọc “Hà Nội faces summer water shortages”

Rainwater harvesting practices and attitudes in the Mekong Delta of Vietnam

Access to safe drinking water is limited in the Mekong Delta region of Vietnam. Rainwater harvesting (RWH) at household level is among the primary sources of drinking water in the region and is widely
practiced throughout Southeast Asia. It has recently been increasingly advocated as an alternative or supplemental approach to household water supply. However, relatively little research has been done on current RWH practices and attitudes. We interviewed residents of 619 households in three provinces to understand the current practice of and preferences for rainwater harvesting. We found that rainwater was the most common water source for all domestic activities in the rainy season; however, it was reserved for high-value uses in the dry season. Residents ranked color, perceived safety, smell, taste and reliability of rainwater very highly compared to other water sources. Most households practice daily first-flush and/or boil water before drinking. Storage capacity seems to be a major barrier to RWH providing an adequate supply of domestic water year-round. Because other improved water supplies are not widely available in the rural delta, rainwater harvesting seems to be a promising way to expand access to improved water sources for the residents

Read full article here http://se.ueh.edu.vn/wp-content/uploads/nghien-cuu/8-Pham-Khanh-Nam-Rainwater-harvesting-practices-and-attitudes-in-the-Mekong-Delta-of-Vietnam.pdf

Đồng bằng sông Cửu Long không thể giàu nếu cứ trồng lúa?


Rivenbarks in Vietnam Mekong delta

River barges in Vietnam Mekong delta

Chiến lược phát triển Đồng bằng sông Cửu Long của chính phủ Việt Nam đã có những thay đổi căn bản theo hướng giải phóng vùng đất này khỏi tư duy an ninh lương thực để tạo cơ hội phát triển các ngành nông nghiệp khác có thể giúp nông dân làm giàu, một nhà khoa học vừa tham gia hội nghị phát triển Đồng bằng sông Cửu Long cho biết. Ông còn nói không nên quá lo lắng về tác động của biển đổi khí hậu và nước biển dâng đối với vùng đồng bằng trọng yếu này, mà hãy để các thế hệ sau giải quyết. Tiếp tục đọc “Đồng bằng sông Cửu Long không thể giàu nếu cứ trồng lúa?”

Di dân, tị nạn do biến đổi khí hậu có thể lên tới 1 tỉ người đến năm 2050

English: Climate Migrants Might Reach One Billion by 2050

Rome, 21 Tháng 8 2017 (IPS) – Hãy tưởng tượng thế giới có nhiều đến 1 tỉ người đối mặt với ảnh hưởng khắc nghiệt do hậu quả của biến đổi khí hậu, dẫn đến tình trạng hạn hán và/hoặc lũ lụt trầm trọng; thời tiết khắc nghiệt; tài nguyên thiên nhiên bị hủy diệt, đặc biệt là các vùng đất, đất trồng và nước; hệ quả từ điều kiện sống khắc nghiệt, thiếu ăn và nạn đói.

Mặc dù vẫn chưa có cơ sở từ các dự án nghiên cứu khoa học, nhưng tốc độ xảy ra quá trình biến đổi khí hậu đã được chứng minh có thể đưa tới viễn cảnh năm 2050, khi mà cứ 9 người sẽ có 1 người bị ảnh hưởng bởi quá trình này.

Gần đây, các dự báo giao động từ 25 triệu đến 1 tỷ người di cư vì môi trường đến năm 2050, di dân hoặc trong nước hoặc qua biên giới, vì những nhu cầu cơ bản thường trực hay tạm thời.  với 200 triệu người là ước tính được sử dụng nhiều nhất , thông tin từ Viện Môi trường và An ninh con người Đại học Liên Hợp Quốc (Institute for Environment and Human Security of the United Nations University).
Tiếp tục đọc “Di dân, tị nạn do biến đổi khí hậu có thể lên tới 1 tỉ người đến năm 2050”

Bản đồ hoá hiện trạng nước mặt toàn cầu: Mapping long-term global surface water occurrence

ec.europa.eu_In an article published in Nature on 7 December 2016, JRC scientists describe how, in collaboration with Google, they have quantified changes in global surface waters and created interactive maps which highlight the changes in the Earth’s surface water over the past 32 years.

The data show that the impacts of climate on where and when surface water occurs can be measured, and that the presence of surface water can be substantially altered by human activities.The data show that the impacts of climate on where and when surface water occurs can be measured, and that the presence of surface water can be substantially altered by human activities.
©EU/Google 2016

Based on over three million satellite scenes (1 823 Terabytes of data) collected between 1984 and 2015, the Global Surface Water Explorer was produced using 10 000 computers running in parallel. The individual images were transformed into a set of global maps with a 30-metre resolution, which enable users to scroll back in time to measure the changes in the location and persistence of surface water globally, by region, or for a specific area. The maps are available for all users, free of charge. Tiếp tục đọc “Bản đồ hoá hiện trạng nước mặt toàn cầu: Mapping long-term global surface water occurrence”

Land subsidence, rising seas threaten Mekong Delta

Last update 16:34 | 03/08/2017

VietNamNet Bridge – The sustainable development of the Cuu Long (Mekong) Delta faces many threats, especially the rising sea level, worsening land subsidence and declining sedimentation, Dr Le Xuan Thuyen of the University of Natural Sciences has warned.

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A severe landslide that occurred along a bank of the Tien River in Thanh Binh District in the Mekong Delta province of Dong Thap last April. 

Speaking at a seminar last Thursday in HCM City titled “Challenges for sustainable development of the Mekong Delta,” Thuyen said: “The delta is formed by sediments and fairly steady sea levels. Now the two elements are no longer present and so the delta is facing an uncertain future.” Tiếp tục đọc “Land subsidence, rising seas threaten Mekong Delta”

Tóm tắt các vấn đề về ĐBSCL

Đồng bằng Sông Cửu Long ĐBSCL hiện nay đang đối diện một số vấn đề nghiêm trọng.

Vấn đề năng lượng

Đây có lẽ là vấn đề dễ giải quyết nhất đối với VN. Hai nguồn năng lượng tái tạo – NLTT, renewable energy – chính (mặt trời và gió) đủ để giải quyết năng lượng cho cả VN chứ không riêng gì ĐBSCL. Hiện nay giá năng lượng tái tạo càng ngày càng rẻ vì các tiến bộ kỹ thuật. Tuy nhiên VN hiện nay lệ thuộc 100% vào năng lượng hóa thạch (fossil energy) vì than và xăng dầu còn rẻ. Ông Điện lực VN lại là nhà độc quyền nên chẳng muốn thay đổi gì. Tiếp tục đọc “Tóm tắt các vấn đề về ĐBSCL”

Climate change threatens water security

vietnamnews

Update: April, 20/2017 – 09:55

Ensuring water security is becoming an urgent task for Việt Nam in the context of climate change impacting all aspects of life, heard a conference on Wednesday. — Photo baotainguyenmoitruong.vn

HÀ NỘI – Ensuring water security is becoming an urgent task for Việt Nam in the context of climate change impacting all aspects of life, heard a conference on Wednesday.

Held by Việt Nam’s Association of Foreign Invested Enterprises (VAFIE), the Việt Nam Academy for Water Resources (VAWR), Germany’s Network for Water, Sanitation and Hygiene and German Agency for International Co-operation, the conference aimed to improve public awareness of the consequences of climate change on the environment, especially on water security.

It also allowed domestic and foreign scientists and agencies to discuss science and technology and experience in preventing environmental disasters.

Deputy Minister of Science and Technology Trần Việt Thanh said that climate change has made protecting water resources more complicated.

River water and ground water levels are decreasing, while sea levels, flood tides and salt intrusion are on the rise, he said, adding that the demand for water in production and daily activities has increased due to industrialisation, urbanisation and population growth.

According to Dr Prof Nguyễn Mại, VAFIE chairman, several factors have posed difficulties for Việt Nam in ensuring water security. They include industrialisation, exploitation of energy generated from water and the expansion of irrigation and drainage systems in upstream countries.

Moreover, climate change and natural disasters are also leading to an imbalance of water resources. Prolonged heat and decreases in rainfall are threatening all regions in the country. 

The demand for water in the country has also increased from 50 billion cu.m a year in 1990 to 72 billion cu.m a year in 2010. It is predicted to reach 80 billion cu.m in 2020. 

The United Nations Food and Agriculture Association suggested Việt Nam pay attention to dealing with four issues: socio-economic and environmental impacts of water use, relationship between land use and water resources, consequences of shifting water resources and social matters arising during a water crisis.

VAWR Deputy Director Trần Đình Hòa stressed the need for co-operation between countries to protect and use water resources effectively and equally.

“It is also necessary to have a complete policy system on water resources to increase the efficiency of water management, protection and use, and change public awareness and action in ensuring water security”, he added. – VNS

Cities not ready for climate change: experts

vietnamnews

Update: April, 17/2017 – 09:00

A flooded alley in District 12, HCM City. High tides broke sewer No. 4 in the district’s Thạnh Xuân 25 Street during the rainy season in October last year, flooding the neighbourhood and disrupting the lives of residents. — VNA/VNS Photo Mạnh Linh

HA NOI – Most Vietnamese cities lack the capacity to confront climate change challenges, experts say, calling for greater preparedness efforts.

Cities have to be ready to adapt to new situations and unexpected developments, ensuring essential services to residents at all times, they add.

Surveys done by the Urban Development Agency under the Construction Ministry have found cities in mountainous areas particularly vulnerable to natural calamities. Tiếp tục đọc “Cities not ready for climate change: experts”

What is the right water supply solution for the Mekong Delta?

Last update 08:10 | 18/01/2017
VietNamNet Bridge – International organizations and the government of Vietnam are all considering solutions to supply safe water to the Mekong River Delta, one of three deltas in the world most vulnerable to climate change.


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Nguyen Hong Tien, a senior official of the Ministry of Construction, said the solution for the Delta is a combination of both inter-provincial water supply plants and smaller-scale water supply works in urban and rural areas.

In small residential quarters, which cannot receive water from regional works, people will use water from salt and brackish-water treatment stations.

He said the Mekong Delta should prioritize the use of surface water from the Tien and Hau Rivers for daily life and production needs. Tiếp tục đọc “What is the right water supply solution for the Mekong Delta?”