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Irrigated agriculture has become an important focus of the Government of Lao People’s Democratic Republic (PDR) for addressing poverty alleviation, food security and climate change. Most irrigation systems to date have relied upon surface water, limiting irrigation development to areas close to streams, rivers and reservoirs. To address this gap, a...

The Asia-Pacific region is facing the challenges of securing water, energy and food. These challenges are intensifying due to economic growth and transformation, population growth, unsustainable land and resource use, changing lifestyles and climate change. As they are interconnected, to avoid major trade-offs these challenges need to be addressed...

Today, 54% of the world’s population live in urban areas, a proportion that is expected to increase to 66% by 2050. Major cities and municipalities in the region rely either fully or partially on groundwater. Four highly relevant Asian cities (Bangkok, Bandung, Ho Chi Minh and Lahore) were selected which bear groundwater dependency in the range of...

アジアの国々は、居住環境の悪化、利用可能な水の減少および水の生態系サービスの損失につながる、深刻な水質汚濁問題に直面し続けている。これらの状況を考慮し、ガバナンスの観点から水質汚濁問題を解決することを目的とし、第3 回世界水フォーラムの場で日本国環境省によりアジア水環境パートナーシップ（WEPA）が提案された。WEPAでは2004年から、アジア13カ国のパートナー国（カンボジア、中国、インドネシア、日本、韓国、ラオス、マレーシア、ミャンマー、ネパール、フィリピン、スリランカ、タイ、ベトナム）の協力のもと、水環境問題問題を解決するために、関係者の能力向上及び解決策の情報・知識共有を行ってきた。 アジア地域の水質に関する問題を解決するためには...

This report is the fourth edition of the series “WEPA Outlook on Water Environmental Management”, which consists of two main chapters: Chapter 1 -“Outlook on Water Environmental Management in WEPA Countries” and Chapter 2 - “Country Profiles of Water Environmental Management in WEPA Countries”. The first chapter presents the results of analysis on...

Considering the finite volume of fresh water resources, managing its quality and quantity sustainably is one of the greatest challenges because of complex global changes. This work strives to predict the combined effect of urbanization and climate change on water quality in Pasig-Marikina River considering its criticalities to develop proactive...

The Emission Quantification Tool (EQT) has been developed to support a rapid assessment of greenhouse gases (GHGs) and short-lived climate pollutants (SLCPs), (i.e, black carbon), associated with municipal solid waste management in a city/country, considering all the phases of the life cycle. Specifically intended for policymakers and practitioners...

Just like in any city, the waste management has always been a major societal issue for Phnom Penh. The monthly amount of disposed waste at the landfill more than doubled in the past decade owing to factors such as population growth, economic growth, changes in industrial structure and of people’s lifestyle. While Phnom Penh Capital Administration...

Payments for ecosystem services (PES) is a market-based mechanism aimed at sustaining the flow of such services. Through a PES scheme, beneficiaries or users of the ecosystem service(s) compensate the provider or manager of those services, directly or indirectly. The provider and beneficiaries agree on the terms and conditions of the PES and...

Kumamoto is a rare case of fully functional PES for over 13 years; Willingness between buyers and sellers is one of the basic conditions for establishing PES. However, willingness are always not sufficient condition for groundwater recharge, which are difficult to quantify and verify; Role of intermediary institutions such as local agriculture...