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G B Thapa

Publications and source records attributed to G B Thapa.

6 recordsLinked to original sources

Changing approaches to mountain watersheds management in mainland South and Southeast Asia.

Mountain watersheds, comprising a substantial proportion of national territories of countries in mainland South and Southeast Asia, are biophysical and socioeconomic entities, regulating the hydrological cycle, sequestrating carbon dioxide, and providing natural resources for the benefit of people living in and outside the watersheds. A review of the literature reveals that watersheds are undergoing degradation at varying rates caused by a myriad of factors ranging from national policies to farmers' socioeconomic conditions. Many agencies--governmental and private--have tried to address the problem in selected watersheds. Against the backdrop of the many causes of degradation, this study examines the evolving approaches to watershed management and development. Until the early 1990s, watershed management planning and implementation followed a highly centralized approach focused on heavily subsidized structural measures of soil conservation, planned and implemented without any consultation with the mainstream development agencies and local people. Watershed management was either the sole responsibility of specially created line agencies or a project authority established by external donors. As a consequence, the initiatives could not be continued or contribute to effective conservation of watersheds. Cognizant of this, emphasis has been laid on integrated, participatory approaches since the early 1990s. Based on an evaluation of experiences in mainland South and Southeast Asia, this study finds not much change in the way that management plans are being prepared and executed. The emergence of a multitude of independent watershed management agencies, with their own organizational structures and objectives and planning and implementation systems has resulted in watershed management endeavors that have been in complete disarray. Consistent with the principle of sustainable development, a real integrated, participatory approach requires area-specific conservation programs that are well incorporated into integrated socioeconomic development plans prepared and implemented by local line agencies in cooperation with nongovernment organizations (NGOs) and concerned people.

Agriculture↗

Changing farmers' land management practices in the hills of Nepal.

This paper sheds light on changing farmers' land management practices in two mountain watersheds, with and without extemal assistance, in the western hills of Nepal. Information used in the analysis were obtained through a survey of 300 households, group discussion, key informant interviews, and field observation conducted during April-September 1999. Confronted with ever-decreasing landholding size due to a steadily growing population and scarcity of nonfarming employment opportunities, farmers in both watersheds have increasingly adopted assorted types of structural and biological measures to control soil erosion, landslides, gully expansion, and soil nutrient loss to maintain or even enhance land productivity. Adoption of guly control measures, construction of the retention walls, alley cropping, use of vegetative measures for landslide control, mulching, and use of green manure and chemical fertilizers are found significantly high in the project area due to the provision of technical and financial support, whereas composting is found significantly high in the nonproject area. Different from the traditionally held beliefs, population pressure on a finite land resource has brought positive change in land management. However, the experience from both watersheds indicates that there is limit to the extent that resource poor farmers can respond to land degradation without any extemal assistance. Required is the arrangement for appropriate polices and support services and facilities enabling farmers to adopt locationally suitable and economically attractive land management technologies.

Agriculture↗

Impacts of emigration on mountain watersheds: the upper Pokhara Valley, Nepal.

"Confronted with adverse physical conditions, marginal landholdings and scarce non-farming employment opportunities, farmers in the Upper Pokhara Valley had opted for temporary emigration as an alternative strategy for fulfilling their subsistence requirements. This had caused somewhat malign effects on watershed due to dwindling farm management practices and increasing dependency on common resources.... Findings of this study are envisaged to be conducive to the formulation of a comprehensive watershed management strategy, including population planning....[It is suggested] that both overpopulation and depopulation could be instrumental in watershed degradation, especially in mountainous areas where labor is a critical factor in the use and management of farmlands."

Agriculture↗

Resettlement experiences and alternatives in Thailand.

Problems concerning the resettlement of those made homeless by the construction of dams to create reservoirs in Thailand are considered. The authors attempt "firstly, to examine the rationale for spontaneous and planned resettlement in Thailand. Secondly, the determinants of the success or failure of resettlers are explored with reference to selected planned resettlement projects. Finally, resettlement alternatives for prospective reservoir evacuees are proposed."

Asia↗