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- W2739840025 abstract "Distribution pattern of Parthenium hysteropurus, a noxious alien weed, across various land use types, its impact on species richness and forage production of grassland, and local people’s perception of the weed were investigated in western Chitwan, Nepal, during monsoon of 2013. Distribution pattern was studied by examining the locations identified randomly using Arc GIS 9.3. Grassland ecosystem was sampled at 5 different sites with 10 pairs of 1 m × 1 m quadrats, i.e. 10 quadrats in high invasion sites (coverage P. hysterophorus >80%) and 10 in low invasion area (coverage P. hysterophorus <20%). People’s perception on the arrival of P. hysterophorus in Chitwan, and its’ negative impacts on crop production, and human and livestock health were assessed using group discussion with the locals at five locations. The spatial analysis of P. hysterophorus L. showed that the weed has had higher frequency of occurrence in urban area and hardwood forest, with presence rate of 100% and 52.47%, respectively, followed by non-irrigated cropland (26.6%), irrigated cropland (29.4%), sand and gravels (21.1%), and grazing land (17.4%). This study revealed that land use type has had significant effect on density and height of P. hysterophorus L. but not in the production of biomass (biomass for all grass species combined other than P. hysterophorus L. and total biomass). Species richness was significantly higher in sites with low cover of P. hysterophorus than in sites with high cover. Effect of land use type on species richness for same level of invasion was not significant. Similarly, there was high level of similarity of species composition between different level of invasion and different land use types. But majority of native species tends to be rarer in high invasion areas. According to people’s perception, the weed first appeared in the study area about 10 years back (in early 2000s) and it has been rapidly spreading since then. The weed also caused harm to people and animals when exposed causing throat and mouth infection in cattle and skin allergies and eye infections in children. It has been perceived by the local people that transportation and monsoon floods were the primary reasons for the introduction of this weed to the locality." @default.
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- W2739840025 date "2014-01-01" @default.
- W2739840025 modified "2023-09-26" @default.
- W2739840025 title "Vulnerability Assessment of Different Land Use Types to Invasion by Parthenium hysterophorus L. in Western Chitwan, Nepal" @default.
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