نتایج جستجو برای: water protection resource

تعداد نتایج: 915353  

2005
G. Kovačič

Slovenian karst areas extend over 43% of the country; limestones and dolomites of the Mesozoic era prevail. In Slovenia karst groundwater contributes up to 50% of the total drinking water supply. The quality of water is very high, despite the fact that it is extremely vulnerable to pollution. The present article is a study and a review of the potential and actual sources of pollution to the gro...

Journal: :Environmental science and pollution research international 2007
Ling Cao Weimin Wang Yi Yang Chengtai Yang Zonghui Yuan Shanbo Xiong James Diana

GOAL, SCOPE AND BACKGROUND Aquaculture activities are well known to be the major contributor to the increasing level of organic waste and toxic compound in the aquaculture industry. Along with the development of intensive aquaculture in China, concerns are evoked about the possible effects of ever-increasing aquaculture waste both on productivity inside the aquaculture system and on the ambient...

Journal: :آب و توسعه پایدار 0
سیده سعیده شرافت فریبا قنبری سید احمد حسینی

the increasing number of hazards related to water shortage in different parts of the world and the probability of socio-economic crisis, social stresses and even war occurrence as water shortage impacts; shows that water supply challenges will be more important and widespread than energy supply challenges in future decades. during the time, with population growth, resource demand increase and p...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2012
Yao-Huan Huang Dong Jiang Da-Fang Zhuang Jian-Hua Wang Hai-Jun Yang Hong-Yan Ren

Enhancing water use efficiency (WUE) is the key approach to maintain sustainable water resource supply. Due to the complexity of the water cycle, accurate estimation of WUE at the regional scale is a challenging task. Here we presented a framework of relative water use efficiency (RWUE). According to the linkage between RWUE and land use types, assessment of WUE at a regional scale could be per...

Journal: :Ambio 2011
Lixin Guan Ge Sun Shixiong Cao

Ecosystem restoration efforts have become a booming business in China. Billions of dollars are being spent annually to restore polluted waterways and ecosystems that have been degraded, fragmented, or paved over (Fu et al. 2007; Wang et al. 2007). However, China’s environmental sustainability index remains among the lowest in the world (World Bank 2009; Liu 2010). For all the money spent, there...

Journal: :Journal of the Hydraulics Division 1973

Journal: :Archives of Business Research 2014

Journal: :Arabian Journal of Geosciences 2018

I.P.S. Ahlawat N.K. Sharma R.J. Singh,

Of the several mechanisms that can bring about efficient resource use, the most widelyapplicable one is intercropping systems that can make better use of resources. The aim of thisstudy was to evaluate resource capture and resource use efficiency in transgenic cotton-peanutintercropping system and in their respective sole crops with using 25-50% substitution ofrecommended dose of nitrogen (RDN)...

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