Maximum Temperature Trends in the Himalaya and Its Vicinity: An Analysis Based on Temperature Records from Nepal for the Period 1971–94

Shrestha, Arun B.; Wake, Camerson P.; Mayewski, Paul Andrew; Dibb, Jack E.

doi:10.1175/1520-0442(1999)012<2775:mttith>2.0.co;2

Cited by 726 publications

(518 citation statements)

References 30 publications

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“…0.19°C per decade in both the areas (p \ 0.05) between 1978 and 2009. This warming rate is slower than the average warming in Nepal (between 1971 and 1994) (Shrestha et al 1999) and in the Hindu Kush Himalayan region (between 1982 and 2006) (Shrestha et al 2012). …”

Section: Climatesupporting

confidence: 90%

Land-use change under a warming climate facilitated upslope expansion of Himalayan silver fir (Abies spectabilis (D. Don) Spach)

Suwal

Shrestha²,

Guragain³

et al. 2016

Plant Ecol

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Global warming is triggering some species to shift towards the poles or higher elevations, but spatial translocation is also influenced by land-use regime or intensity. The Himalayan climate is getting warmer and land use has changed, reducing in intensity in some areas. We estimated the upper species limit (USL) and tree limit of Abies spectabilis (D. Don) Spach and assessed whether these have changed over recent years. We hypothesise an upslope shift in response to enhanced temperature and changes in land-use intensity. Our four transects were located in treeline ecotones of two protected areas in Nepal, namely Manaslu Conservation Area (3 transects) and Gaurishankar Conservation Area (1 transect). Transects (20 m wide) ran from the USL of A. spectabilis down towards the treeline and beyond to the forest line. Length of each transect varied depending on local conditions. Co-ordinates, elevation, height and age of each A. spectabilis individual along the transects were recorded. We noted an upward shift of both the USL and the tree limit. The rate of shift was ca. 20 m per decade for the USL and 12 m per decade for the tree limit in the area of reduced land-use intensity and in the area with no change in land use, 5 m per decade for the USL, but almost nil for tree limit. The seedling density was higher below the treeline than above. Reduced intensity of land use was the dominant factor in upslope shift of A. spectabilis at both the USL and the tree limit.

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Section: Climatesupporting

confidence: 90%

Land-use change under a warming climate facilitated upslope expansion of Himalayan silver fir (Abies spectabilis (D. Don) Spach)

Suwal

Shrestha²,

Guragain³

et al. 2016

Plant Ecol

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“…Recent concerns about regional climate change have focused attention on the dependence of climate variables on elevation (Beniston and Rebetez 1996;Aizen et al 1997;Shrestha et al 1999;Liu and Chen 2000;Marchenko 1999;Giese and Moβig 2004;Bolch 2007). As far as the increasing rates of dependence of temperature on elevation is concerned, there are many contrasting results in the different mountainous regions.…”

Section: Discussionmentioning

confidence: 93%

“…As far as the increasing rates of dependence of temperature on elevation is concerned, there are many contrasting results in the different mountainous regions. In some mountainous regions, there is increased warming with increasing elevation (Beniston and Rebetez 1996;Aizen et al 1997;Shrestha et al 1999;Liu and Chen 2000). In contrast, some studies have shown that the rates of increase in temperature in the high elevation regions are lower than those in the low elevation regions (Marchenko 1999;Giese and Moβig 2004;Bolch 2007).…”

Section: Discussionmentioning

confidence: 99%

Recent climate trends on the northern slopes of the Tianshan Mountains, Xinjiang, China

et al. 2009

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Abstract:In arid regions, mountains fulfill important ecological and economic functions for the surrounding lowlands. In the scenario of global warming, mountain ecosystems change rapidly, especially in the arid region of northwestern China. This paper provides an assessment of the changes in temperature and precipitation in the historical records of climate on the northern slopes of the eastern Tianshan Mountains. A Mann-Kendall nonparametric trend and Sen's tests are employed to analyze the interannual changes and innerannual variability in temperature and precipitation in the regions of low to high altitude. The present study finds that the largest increases in annual temperature are observed at stations in the low altitude regions. The significant increasing trends in temperature tend to occur mainly in late winter and early spring at stations from middle to high altitude, but in summer and autumn at stations of low altitudes. The increasing trends in annual precipitation are found from the middle to high altitude areas, but decreasing trends are found in the low altitude areas. The significant increasing trends in precipitation occur mostly in winter and earlier spring at stations from the middle to high altitudes, while the increasing and decreasing trend coexists at stations of low altitude with most of the significant trend changes occurring in March, June and August.

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“…These perceptions are supported by the historical records at Khudi station, which show that the minimum temperature increased 0.07 • C per year and the maximum temperature increased 0.02 • C per year from 1980 to 2012. Shrestha [46] reported a similar observation, that the mean annual temperature is estimated to increase by 0.06 • C annually and is projected to increase by another 1.2 • C by 2030, 1.7 • C by 2050 and 3.0 • C by 2100 in Nepal [47].…”

Section: Temperaturementioning

confidence: 99%

Household Perceptions about the Impacts of Climate Change on Food Security in the Mountainous Region of Nepal

2017

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Abstract:This study tried to understand the mountainous households' perception of climate change and its impacts on food security in the Lamjung district of Nepal. The study attempted to find out changes in households food security and daily activities in the face of climate change for the last twenty years. The study started with the 150 household surveys along with participatory rural appraisal to understand the climate change perception of local people and its impact on dimensions of food security. Households expressed different levels of perception in terms of climate change on food security. The result shows that most of the mountainous households experienced increased temperature, less rainfall in winter, an increasing number of natural disasters and the emergence of insects for the last twenty years. They perceived the role of climate change in decreased crop production, decreased dairy products and increased household work. The situation of food security is likely to be more vulnerable to climate change in the future. It was also observed that households have been using different autonomous adaptation measures, such as high yielding crop varieties, enhanced irrigation systems and fertilizers, to cope with the changing climate. Finally, the study recommended policy instruments to enhance food security in the mountainous region amidst changing climate.

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Maximum Temperature Trends in the Himalaya and Its Vicinity: An Analysis Based on Temperature Records from Nepal for the Period 1971–94

Cited by 726 publications

References 30 publications

Land-use change under a warming climate facilitated upslope expansion of Himalayan silver fir (Abies spectabilis (D. Don) Spach)

Land-use change under a warming climate facilitated upslope expansion of Himalayan silver fir (Abies spectabilis (D. Don) Spach)

Recent climate trends on the northern slopes of the Tianshan Mountains, Xinjiang, China

Household Perceptions about the Impacts of Climate Change on Food Security in the Mountainous Region of Nepal

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