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| 1 | Climate change and finger millet: Perception, trend and impact on yield in different ecological regions in Central Nepal显示文摘The views of local people on climate change along different ecological regions are relatively unexplored in Nepal. This study was conducted in 13 villages in central Nepal at different altitudes to document the views of small holder farmers and compare their perception with trends of climatic variables, finger millet yield, natural disasters, plant phenology(flowering and fruiting), status of forest and wild life, as well as the spread of diseases and pests. Analysis on the climatic data of stations for 36-41 years between 1975 and 2016 showed significant increases in the minimum temperature in lower tropical climatic region(<500 m), upper tropical to subtropical climatic region(500-2000 m) and temperate climatic region(2000-3000 m) by 0.01, 0.026 and 0.054℃/year, respectively, and an increase of maximum temperature by 0.008, 0.018, and 0.019℃/year, respectively. Rainfall showed a strongly significant decreasing trend in all elevation regions. This result matches with the views of respondents except 38% respondent from temperate climatic region. People from the temperate climatic region also mentioned that current onset of snowfall is delayed but amount of snowfall remained the same. From the documented records, except events of wild fire, frequency of natural disasters events have increased in the recent years, which was in harmony with the views of local people. Multi-linear regression analysis showed that contribution of climatic variables on finger millet yield in lower tropical climatic region and upper tropical to subtropical regions was 23% and 57.3%, respectively, which was supported by increasing trend on average growing degree day(GDD) temperature at the rate of 0.01℃ in upper tropical to subtropical region and 0.007℃ in lower tropical climatic region yearly. Finger millet yield has been increasing at the rate of 7.39 and 36.9 kg/ha yearly in lower tropical climatic region and upper tropical to subtropical climatic region, respectively. This result provides deeper understanding of people's perception of causes and effects of climate change on diverse variables along different elevation and related magnitude which can contribute to policy making in Nepal. | Dol Raj LUITEL Mohan SIWAKOTI Pramod Kumar JHA | 2019 | Journal of Mountain Science2019，16，4： | 2 |
| 2 | Habitat Range of two Alpine Medicinal Plants in a Trans-Himalayan Dry Valley,Central Nepal显示文摘Understanding of the habitat range of threatened Himalayan medicinal plants which are declining in their abundance due to high anthropogenic disturbances is essential for developing conservation strategies and agro-technologies for cultivation.In this communication, we have discussed the habitat range of two alpine medicinal plants, Aconitum naviculare(Brühl) Stapf and Neopicrorhiza scrophulariiflora(Pennel) Hong in a trans-Himalayan dry valley of central Nepal, Manang district.They are the most prioritized medicinal plants of the study area in terms of ethnomedicinal uses.A.naviculare occurs on warm and dry south facing slopes between 4090~4650 m asl along with sclerophyllous and thorny alpine scrubs, while N.scrophulariiflora is exclusively found on cool and moist north facing slope between 4000 and 4400 m asl where adequate water is available from snow melt to create a suitable habitat for this wetland dependent species.The soil in rooting zone of the two plants differs significantly in organic carbon(OC), organic matter(OM), total nitrogen(N) and carbon to nitrogen(C/N) ratio.Due to cool and moist condition of N.scrophulariiflora habitat, accumulation of soil OC is higher, but soil N content is lower probably due to slow release from litter, higher leaching loss and greater retention in perennial live biomass of the plant.The C/N ratio of soil is more suitable in A.navuculare habitat than that of N scrophulariiflora for N supply.Warm and sunny site with N rich soil can be suitable for cultivation of A.naviculare, while moist and cool site with organic soil for N.scrophulariiflora.The populations of both the plants are fragmented and small.Due to collection by human and tramplingdamage by livestock, the population of A.naviculare was found absent in open areas in five of the six sampling sites and it was confined only within the bushes of alpine scrubs.For N.scrophulariiflora, high probability of complete receding of small glaciers may be a new threat in future to its habitat.The information about habitat conditions, together with the information from other areas, can be useful to identify potential habitats and plan for cultivation or domestication of the two medicinal plants. | Bharat Babu SHRESTHA Pramod Kumar JHA | 2009 | Journal of Mountain Science2009，6，1： | 2 |
| 3 | Impact of land use on physico-chemical and hydrological properties of ustifluvent soils in riparian zone of river Yamuna,India显示文摘 | PRAMOD JHA MOHAPATRA K P DUBEY S K | 2010 | Agroforest Syst2010，80，3： | 1 |
| 4 | Impact of land use on physico-chemical and hydrological properties of ustifluvent soils in riparian zone of river Yamuna, India显示文摘 | Pramod Jha Mohapatra K P Dubey S K | 2010 | Agrofomst Syst2010，80，3： | 1 |
| 5 | Predicting suitable habitat of an invasive weed Parthenium hysterophorus under future climate scenarios in Chitwan Annapurna Landscape,Nepal显示文摘Chitwan-Annapuma Landscape(CHAL)in central Nepal is known for its rich biodiversity and the landscape is expected to provide corridors for species range shift in response to climate change.Environmental assessments have identified biological invasions and other anthropogenic activities as major threats to the biodiversity in the CHAL.One of the rapidly spreading Invasive Alien Plant species(IAPs)in the CHAL is Parthenium hysterophorus L.,a neotropical invasive weed of global significance.This study aimed to investigate the current and future projected suitable habitat of P.hysterophorus in the CHAL using MaxEnt modelling in three'Representative Concentration Pathways'(RCPs 2.6,4.5 and 8.5)corresponding to different greenhouse gases emissiontrajectories for the year 2050 and 2070.A total of 288species occurrence points,six bioclimatic variablesmean diurnal range,isothermality,annual precipitation,precipitation of driest month,precipitation seasonality,precipitation of driest quarter and two topographic variables(aspect and slope)were selected for MaxEnt modelling.Potential range shift in terms of increase or decline in the suitable habitat areas under the projected scenarios were calculated.Slope and annual precipitation were the most important variables that explained the current distribution of P.hysterophorus.Twenty percent of the total area of CHAL was predicted to be suitable habitat for the growth of P.hysterophorus in the current climatic condition.Highest gain in the suitable habitat of this noxious weed was found under RCP 4.5 scenario in 2050 and 2070.whereas there will be a loss in thesuitable habitat under RCP 8.5 scenario in 2050 and2070.Out of four physiographic regions present in CHAL,three regions-Siwalik,Middle Mountain and High Mountain have suitable habitat for P.hysterophorus under current climatic condition.The mountainous region is likely to be affected more than the Siwalik region by further spread of P.fhysteropfhorus in the future under low(RCP 2.6)to medium(RCP 4.5)emission scenarios.The suitable habitat for this weed is likely to increase in the protected areas of mountain regions(Langtang National Park,Annapurna Conservation Area and Manaslu Conservation Area)in the future.The results have revealed a risk of spreading P.hysterophorus from present localities to non-invaded areas in the current and future climatic condition.Such risk needs to be considered by decision makers and resource managers while planning for effective management of this weed to reduce its ecological and economic impacts in the CHAL. | MAHARJAN Seerjana SHRESTHA Bharat Babu JOSHI Mohan Dev DEVKOTA Anjana MUNIAPPAN Rangaswamy ADIGA Abhijin JHA Pramod Kumar | 2019 | Journal of Mountain Science2019，16，10： | 1 |
| 6 | Soil and residue carbon mineralization as affected by soil aggregate size显示文摘 | Pramod Jha Nikita Garg Brij Lal Lakaria A.K. Biswas A. Subba Rao | 2012 | Soil & Tillage Research2012，，： | 1 |
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