排序方式: 共有4条查询结果,搜索用时 15 毫秒
1
1.
Karki Sikha Burton Paul Mackey Brendan Alston-Knox Clair 《Environment, Development and Sustainability》2021,23(10):14642-14665
Environment, Development and Sustainability - Like other low-income countries in Asia and Africa, Nepal still suffers from food insecurity with a large proportion of food-insecure households being... 相似文献
2.
Arsenic contamination of soils and agricultural plants through irrigation water in Nepal 总被引:1,自引:0,他引:1
Dahal BM Fuerhacker M Mentler A Karki KB Shrestha RR Blum WE 《Environmental pollution (Barking, Essex : 1987)》2008,155(1):157-163
This study monitored the influence of arsenic-contaminated irrigation water on alkaline soils and arsenic uptake in agricultural plants at field level. The arsenic concentrations in irrigation water ranges from <0.005 to 1.014 mg L(-1) where the arsenic concentrations in the soils were measured from 6.1 to 16.7 mg As kg(-1). The arsenic content in different parts of plants are found in the order of roots>shoots>leaves>edible parts. The mean arsenic content of edible plant material (dry weight) were found in the order of onion leaves (0.55 mg As kg(-1))>onion bulb (0.45 mg As kg(-1))>cauliflower (0.33 mg As kg(-1))>rice (0.18 mg As kg(-1))>brinjal (0.09 mg As kg(-1))>potato (<0.01 mg As kg(-1)). 相似文献
3.
This paper examines the special problems that are faced by developing countries, specifically Nepal, which have to sustain increasing populations from a depleting natural resource base. Nepal is an example of a developing country where fertility is high and mortality is decreasing fast, resulting in a high rate of population growth. Nepal's rapid population growth has had a significant impact on natural resource depletion and consequently, environmental degradation. The case of Nepal demonstrates the difficulties confronting developing countries, which attempt practical implementation of the population policy guidelines set out in Agenda 21. Past and current population programs in this country have failed to address the population problem as multidimensional, and have failed to encourage grassroots participation. Economic stagnation and poverty encourage a large family size, and are delaying declines in fertility which subsequently leads to high land encroachment and fast depletion of natural resources like forests and water. The government needs to implement an integrated, multidimensional approach, which emphasizes literacy, education, lowering infant mortality, and providing contraceptives along with follow-ups. Finally, the greatest action must consist of fostering a higher rate of planned economic and social development that must be shown to have meaning for, and impact on the population in general. 相似文献
4.
Karki Neeta Parajulee Colombo Robert E. Gaines Karen F. Maia Anabela 《Environmental science and pollution research international》2021,28(6):6450-6458
Environmental Science and Pollution Research - Estrogenic compounds including 17β estradiol (or E2) are known to negatively affect the reproductive system of many animals, including fish,... 相似文献
1