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1.
Historically, Nepal has relied on its agricultural sector to sustain economic development. However, given rapid population growth, the nation may find it necessary to develop its mineral base in order to promote economic growth and stability. This paper presents a mineral resource assessment of Nepal and its five development regions, primarily to make an estimate based on geology of the range of minerals that may exist in Nepal. Resource estimates for each development region were obtained by way of geologic comparisons with the 50 US states. It is concluded that Nepal may be well-endowed in non-fuel and energy minerals.  相似文献   

2.
At scenic sites across China, rural officials compelled to maximize revenue use local state authority over protected areas to foster “tourism dynamos”. Local states set up infrastructure and institutions around rural attractions that channel the circulation of tourists, churning out revenues that meet quotas and fund further expansion of attractions and towns. To make these dynamos turn, local authorities have displaced resident-led tourism operations they had previously helped set up. Residents are reincorporated in varying ways and often retain land use rights. Meanwhile, as revenues stream out of attractions, what little is invested in environmental protection goes to maintaining scenery. Local governments also accomplish spatial transformations, within each park intensifying surplus generation in areas zoned for tourism while reserving other areas from use, and beyond park boundaries linking attractions together on tourism circuits radiating from central towns. This state-driven transformations depend on how the reservation of land from commodity exchange within protected areas comes together with specific state capacities to enable tourism intensification. These processes, which I label “developmental conservation,” call attention to selective commodifications and the mediating role of the state in protected area governance in China and beyond.  相似文献   

3.
I conducted new vorticity and deformation temperatures studies to test competing models of the exhumation of the mid-crustal rocks exposed in the Dolpo region (West Nepal). My results indicate that the Main Central Thrust is located ∼5 km structurally below the previous mapped locations. Deformation temperature increasing up structural section from ∼450 °C to ∼650 °C and overlap with peak metamorphic temperature indicating that penetrative shearing was responsible for the exhumation of the GHS occurred at “close” to peak metamorphic conditions. I interpreted the telescoping and the inversion of the paleo-isotherms at the base of the GHS as produced mainly by a sub-simple shearing (Wm = 0.88–1) pervasively distributed through the lower portion of the GHS. My results are consistent with hybrid channel flow-type models where the boundary between lower and upper portions of the GHS, broadly corresponding to the tectonometamorphic discontinuity recently documented in west Nepal, represents the limit between buried material, affected by dominant simple shearing, and exhumed material affected by a general flow dominates by pure shearing. This interpretation is consistent with the recent models suggesting the simultaneous operation of channel flow- and critical wedge-type processes at different structural depth.  相似文献   

4.
Christopher A. Thoms   《Geoforum》2008,39(3):1452-1465
Community forestry in Nepal vests rights of access, use, exclusion, and management of national forestland to local user groups. There is strong potential for community forests to serve as the basis for improving the quality of life and the status of livelihoods in rural Nepal while conserving forest resources. Frequently, community forest user groups are dominated by local elites who choose to close access to community forestland for several years. As a result, forest conditions are improving, but the poorest households bear the cost of strict protection. In this paper I argue that community forestry is thus having rather limited success at improving rural livelihoods. Although community forestry is fairly successful at conservation, there remain huge wealth disparities between community forest member households, limited access to vital forest products, and significant power disparities within community forest user groups. Such conditions of inequity, reinforced by current community forestry policy and practice, severely challenge the development potential of community-controlled natural resources. In Nepal, overcoming these challenges may require a change in policy that mandates more inclusive local decision-making.  相似文献   

5.
This paper presents a theoretical framework for analyzing human–environment issues that examines shifting, dialectical relationships between social and power relations, cultural beliefs and practices, and ecological processes to allow an interdisciplinary, complex assessment of social and environmental change in Nepal. The purpose of this analysis is to capture the complexity and non-static nature of environmental and social change in the context of uneven development. Drawing from political ecology and feminist geography, this framework brings together scholarship on aspects of human–environment issues that are often pursued in isolation, yet all three processes, social–political relations, cultural practices and ecological conditions, have been acknowledged as important in shaping the trajectory of social and ecological change. I argue that a consideration of the articulations between them is necessary to understand first, how specific land management regimes arise and are dominant over time in specific places. And second, I examine the extent to which these regimes distribute resources equitably within communities, promote economic development and sustain ecological resilience. In this analysis, ecological processes are conceptualised as co-productive of social and cultural processes to explore their role in land management regimes without resorting to environmental determinist or similarly reductive paradigms. I present this framework through the example of natural resource management, specifically community forestry in Nepal, as it offers a rich case study of the relationships between the political economy of land use and the ecological effects of natural resource extraction.  相似文献   

6.
王海芝 《城市地质》2009,4(4):31-33
本文针对北京景区泥石流破坏的特点,确定其资源价值,生态环境、生命财产的损失为评价主体。采用层次分析法确定了各评价体系中评价因子的权重,建立了以加权求和法为计算基础的评价模型,并利用该模型对2002年发生于云蒙山景区的泥石流进行了灾情评估。  相似文献   

7.
滇中林柱状旅游地质景观赏析   总被引:2,自引:2,他引:0  
杨世瑜 《云南地质》2008,27(1):62-73
滇中林柱状旅游地质景观是造型奇异、极具旅游吸引力的高品级旅游景观,具有极高的旅游价值。滇中林柱状旅游地质景观已开发成旅游胜地,是地质资源旅游资源化的范例。从旅游角度探讨林柱状旅游地质景观的赏析,以期进一步开展旅游地质景观的深层次研究。  相似文献   

8.
Bringing together ethnographic evidence from mid-Western Nepal and eastern Sri Lanka, this article explores how political legitimacy is constructed and contested in post-war environments. We posit that in the post-war context there are important changes in the kinds of politics, agenda-setting, players and tactics that are considered acceptable and those that are rendered transgressive, threats to order and stability, or otherwise placed ‘out of bounds’. The art of crafting political legitimacy is defined in sharp contrast to the immediate history of armed conflict. The end of the war and the resumption of supposedly democratic politics thus mark a shift in what is seen as legitimate or normal politics. This shift constrains certain kinds of actors, tactics, and registers and it amplifies others, while being itself a result of political work. We argue that a reduction of the space for dissent, and an increase of the space for politicking are complementary aspects of the redefinition of what constitutes legitimate politics in the post-war context. These adverse political effects are not simply problems of context – post-war environments being non-conducive to democracy – but rather expose the more fundamental fallibilities and contradictions of demarcating a legitimate sphere of democratic politics in particularly visible and precarious ways.  相似文献   

9.
龙虎山风景名胜区峨眉峰景区的发现及其意义   总被引:3,自引:0,他引:3  
魏源  赵赣  吴任华  崔学军 《江西地质》2000,14(4):276-280
本文对鹰潭市龙虎山风景名胜区峨眉峰景区作了概略介绍,同时对整个名胜区的旅游环境、旅游资源进行了分析评价,最后指出了对该景区发掘的意义及开发利用的初步设想。  相似文献   

10.
Seismotectonics of the Nepal Himalaya from a local seismic network   总被引:3,自引:0,他引:3  
The National Seismological Network of Nepal consists of 17 short period seismic stations operated since 1994. It provides an exceptional view of the microseismic activity over nearly one third of the Himalayan arc, including the only segment, between longitudes 78°E and 85°E, that has not produced any M>8 earthquakes over the last century. It shows a belt of seismicity that follows approximately the front of the Higher Himalaya with most of the seismic moment being released at depths between 10 and 20 km. This belt of seismicity is interpreted to reflect interseismic stress accumulation in the upper crust associated with creep in the lower crust beneath the Higher Himalaya. The seismic activity is more intense around 82°E in Far-Western Nepal and around 87°E in Eastern Nepal. Western Nepal, between 82.5 and 85°E, is characterized by a particularly low level of seismic activity. We propose that these lateral variations are related to segmentation of the Main Himalayan Thrust Fault. The major junctions between the different segments would thus lie at about 87°E and 82°E with possibly an intermediate one at about 85°E. These junctions seem to coincide with some of the active normal faults in Southern Tibet. Lateral variation of seismic activity is also found to correlate with lateral variations of geological structures suggesting that segmentation is a long-lived feature. We infer four 250–400 km long segments that could produce earthquakes comparable to the M=8.4 Bihar–Nepal earthquake that struck eastern Nepal in 1934. Assuming the model of the characteristic earthquake, the recurrence interval between two such earthquakes on a given segment is between 130 and 260 years.  相似文献   

11.
Trends in landslide occurrence in Nepal   总被引:2,自引:0,他引:2  
Nepal is a mountainous, less developed kingdom that straddles the boundary between the Indian and Himalayan tectonic plates. In Nepal, landslides represent a major constraint on development, causing high levels of economic loss and substantial numbers of fatalities each year. There is a general consensus that the impacts of landslides in countries such as Nepal are increasing with time, but until now there has been little or no quantitative data to support this view, or to explain the causes of the increases. In this paper, a database of landslide fatalities in Nepal has been compiled and analysed for the period 1978–2005. The database suggests that there is a high level of variability in the occurrence of landslides from year to year, but that the overall trend is upward. Analyses of the trends in the data suggest that there is a cyclicity in the occurrence of landslide fatalities that strongly mirrors the cyclicity observed in the SW (summer) monsoon in South Asia. Perhaps surprisingly the relationship is inverse, but this is explained through an inverse relationship between monsoon strength and the amount of precipitation in the Hill District areas of Nepal. It is also clear that in recent years the number of fatalities has increased dramatically over and above the effects of the monsoon cycle. Three explanations are explored for this: land-use change, the effects of the ongoing civil war in Nepal, and road building. It is concluded that a major component of the generally upward trend in landslide impact probably results from the rural road-building programme, and its attendant changes to physical and natural systems.  相似文献   

12.
Size structure data particularly that of length and weight is very important fisheries management tool, which is also applied to assess the health, habitat and integrity of the rivers. Nepal is tremendously rich in both fisheries and water resource and thus, this analysis is very important. However, this kind of analysis is not common in fisheries studies and hence the size structure information of all the fish in Nepal is wanting. This study simply tries to open the door for such studies with the study of the sucker head Garra gotyla gotyla, a very common fish in Nepal. The field observation was done in nine rivers of the country in all the seasons of the 2003 by using electrofishing gear. The length-weight relationship was found to vary both spatially and temporally among rivers and seasons respectively indicating different conditions in different rivers. The length weight relationship also showed some interesting facts about the seasonal cycle of the species indicating the period of growth and stress in different rivers. The monsoon event was found to be highly influential in this relationship.  相似文献   

13.
分析尼泊尔石油地质条件对于促进尼泊尔油气的勘探开发有重要意义。本文通过全面搜集尼泊尔油气地质及相关资料,结合实地考察和部分样品分析结果,报道了尼泊尔区域地质特征、油气勘探现状、区域构造特征和地层发育特征;分析了Dailekh地区出露的油气苗特征、烃源条件、生储盖和油气圈闭条件,认为Dailekh地区发育四套烃源岩层,多个生储盖组合,具有较好的油气勘探前景;油气苗为高成熟烃源岩裂解的产物,可能来自变质岩推覆体下伏沉积岩层;断层和逆冲相关的背斜、突起构造和倾斜断块等是找油气的重要构造。  相似文献   

14.
Landslide hazards and mitigation measures at Gangtok, Sikkim Himalaya   总被引:6,自引:0,他引:6  
Landslides and other mass movements are serious geo-environmental hazards in the Himalayas. Massive landslides killing tens of thousands of people with catastrophic damages have occurred in the Eastern Himalayan State of Sikkim, which shares common borders with Tibet, Nepal, and Bhutan. This paper describes the investigations carried out on recent landslides in Gangtok, Sikkim, India, with emphasis on the triggering mechanisms that have contributed to the release and creep of natural slopes in the region. It is believed that the intense rainfall in the region not only contributes to rapid erosion and weathering of the rock mass, but also increases the groundwater level that leads to reduction in the stability of natural slopes. A landslide instrumentation programme that includes placement of settlement pillars and piezometers is underway to predict the behaviour of landslides in the area.  相似文献   

15.
Mountainous areas in Nepal are prone to landslides, resulting in an enormous loss of life and property every year. As a first step towards mitigating or controlling such problems, it is necessary to prepare landslide susceptibility maps. Various methodologies have been proposed for landslide susceptibility mapping. This study applies the weight of evidence method to the Tinau watershed in west Nepal. A landslide susceptibility map is prepared on the basis of field observations and available data of geology, land use, topography and hydrology. Predicted susceptibility levels are found to be in good agreement with the locations of past landslides. The results show that about 30?% of the area is highly susceptible to landsliding. The present results provide useful information to the authorities concerning the landslide susceptibility zones and possible improvements for disaster management activities and sustainable development.  相似文献   

16.
本文根据我国主要风景名山的岩石组成,作者指出抗风化力强是组成风景名山主体岩石的首要特点,并从岩石性质、构造形迹、岩层产状、古冰川活动等方面,探讨了它们的风景名山及其景观形成过程中的作用,进而阐明了风景名山景观的地质成因。认为不同类型、不同性质的岩石对景观特色起决定作用,构造活动则决定着风景名山的面貌总格局,而适度的风化剥蚀和古冰川活动等外力作用主要起修饰、美化的作用。  相似文献   

17.
郑宝山  张杰 《地球化学》1997,26(6):8-17
岩石中低含量碘的测定是分析化学的一大难题。过去由于使用的分析方法灵敏度不够,岩浆岩碘含量的测定结果偏高,以此为基础计算出来的克拉克值也偏高。放射化学中子活化(RNAA)和同位素稀释质谱(IDMS)分析法可以对岩石中ng/g级碘进行精确测定,在80年代后期克服了一些技术上的难题后,得到了一批可靠的岩石碘含量分析结果。根据最新分析结果计算出岩浆岩、沉积岩和变质岩碘的平均含量分别为18.8、724、166.9(ng/s)。以此为基础计算碘的克拉克值为115ng/g。这一结果只相当于文献值的1/3-1/10。  相似文献   

18.
The Siwalik Group which forms the southern zone of the Himalayan orogen, constitutes the deformed part of the Neogene foreland basin situated above the downflexed Indian lithosphere. It forms the outer part of the thin-skinned thrust belt of the Himalaya, a belt where the faults branch off a major décollement (MD) that is the external part of the basal detachment of Himalayan thrust belt. This décollement is located beneath 13 Ma sediments in far-western Nepal, and beneath 14.6 Ma sediments in mid-western Nepal, i.e., above the base of the Siwalik Group. Unconformities have been observed in the upper Siwalik member of western Nepal both on satellite images and in the field, and suggest that tectonics has affected the frontal part of the outer belt since more than 1.8 Ma. Several north dipping thrusts delineate tectonic boundaries in the Siwalik Group of western Nepal. The Main Dun Thrust (MDT) is formed by a succession of 4 laterally relayed thrusts, and the Main Frontal Thrust (MFT) is formed by three segments that die out laterally in propagating folds or branch and relay faults along lateral transfer zones. One of the major transfer zones is the West Dang Transfer Zone (WDTZ), which has a north-northeast strike and is formed by strike-slip faults, sigmoid folds and sigmoid reverse faults. The width of the outer belt of the Himalaya varies from 25 km west of the WDTZ to 40 km east of the WDTZ. The WDTZ is probably related to an underlying fault that induces: (a) a change of the stratigraphic thickness of the Siwalik members involved in the thin-skinned thrust belt, and particularly of the middle Siwalik member; (b) an increase, from west to east, of the depth of the décollement level; and (c) a lateral ramp that transfers displacement from one thrust to another. Large wedge-top basins (Duns) of western Nepal have developed east of the WDTZ. The superposition of two décollement levels in the lower Siwalik member is clear in a large portion of the Siwalik group of western Nepal where it induces duplexes development. The duplexes are formed either by far-travelled horses that crop out at the hangingwall of the Internal Décollement Thrust (ID) to the south of the Main Boundary Thrust, or by horses that remain hidden below the middle Siwaliks or Lesser Himalayan rocks. Most of the thrusts sheets of the outer belt of western Nepal have moved toward the S–SW and balanced cross-sections show at least 40 km shortening through the outer belt. This value probably under-estimates the shortening because erosion has removed the hangingwall cut-off of the Siwalik series. The mean shortening rate has been 17 mm/yr in the outer belt for the last 2.3 Ma.  相似文献   

19.
This paper engages with contemporary debates in labour geography through its focus on: migrant workers as active agents of change; precarious employment, its complexities and consequences; and the importance of material spaces in migrant labour struggles. Since the early 2000s the South Korean government has been strengthening the institutionalised regulation of low-wage migrant workers. A key tool in this process is the Employment Permit System (EPS), in force since 2004. Under this policy migrant workers are temporary sojourners and effectively socio-politically, culturally and spatially excluded from Korean society. EPS restricts migrants’ freedom to choose or change workplaces, which renders them vulnerable to economic and social precarity. Employers use these restrictions to segregate migrant workers from co-nationals, and low-waged migrant workers often find themselves in exploitative working conditions in isolated places. This paper is based on deep ethnographic fieldwork in “Nepal Town” in Seoul and remote Nepalese workers’ accommodation. We examine how such precarious working conditions and isolation impact on workers’ active involvement in the formation and transformation of Nepal Town in Seoul. We examine the ways in which Nepal Town is a site of spatial agency and praxis for Nepalese workers and explore the potentialities of ‘reactive ethnicity’. The empirical insights provided, suggest that the regulatory migration regime for low-wage migrant workers is strongly linked with new formations of material landscapes of connection, mobility, freedom and safe space. Such space production enables migrant workers to perform agency and employ tactics of resistance in order to create spaces of possibility.  相似文献   

20.
Causes of large-scale landslides in the Lesser Himalaya of central Nepal   总被引:1,自引:0,他引:1  
Geologically and tectonically active Himalayan Range is characterized by highly elevated mountains and deep river valleys. Because of steep mountain slopes, and dynamic geological conditions, large-scale landslides are very common in Lesser and Higher Himalayan zones of Nepal Himalaya. Slopes along the major highways of central Nepal namely Prithvi Highway, Narayangadh-Mugling Road and Tribhuvan Highway are considered in this study of large-scale landslides. Geologically, the highways in consideration pass through crushed and jointed Kathmandu Nappe affected by numerous faults and folds. The relict large-scale landslides have been contributing to debris flows and slides along the highways. Most of the slope failures are mainly bechanced in geological formations consisting phyllite, schist and gneiss. Laboratory test on the soil samples collected from the failure zones and field investigation suggested significant hydrothermal alteration in the area. The substantial hydrothermal alteration in the Lesser Himalaya during advancement of the Main Central Thrust (MCT) and thereby clay mineralization in sliding zones of large-scale landslide are the main causes of large-scale landslides in the highways of central Nepal. This research also suggests that large-scale landslides are the major cause of slope failure during monsoon in the Lesser Himalaya of Nepal. Similarly, hydrothermal alteration is also significant in failure zone of the large-scale landslides. For the sustainable road maintenance in Nepal, it is of utmost importance to study the nature of sliding zones of large-scale landslides along the highways and their role to cause debris flows and slides during monsoon period.  相似文献   

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