期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
Shrinking greenery: Land use and land cover changes in Kurram Agency, Kohi Safid Mountains of north-western Pakistan 被引量:2
1
作者 Kamal HUSSAIN fazlul haq Fazlur RAHMAN 《Journal of Mountain Science》 SCIE CSCD 2018年第2期296-306,共11页
Deforestation and other Land Use and Land Cover(LULC) changes, driven by variety of physical and anthropogenic factors, have altered the mountainous environment. Mountains around the world including northern and north... Deforestation and other Land Use and Land Cover(LULC) changes, driven by variety of physical and anthropogenic factors, have altered the mountainous environment. Mountains around the world including northern and north western belts of Pakistan are highly sensitive to deforestation and other LULC changes, which have profound impacts on various sectors of bio-physical and socio-economic systems. Assessment of LULC changes has high significance for protection, conservation and monitoring mountainous environment. The present study is an attempt to assess the landscape changes with particular reference to forest cover depletion in Kurram Agency located in the north western mountain belt of Pakistan. For detailed comparative analysis the study area has been divided into three sections, which coincide with the present administrative divisions of the Agency, i.e., Upper,Lower and Central Kurram. Temporal span of this study covers four decades. In this study, land use map of 1970 and land sat satellite imageries of 1987, 2000 and 2014 were used as spatial data sets. The images were processed and classified into six LULC classes through geospatial packages and change detection maps were prepared for each division and time period.Findings of the study reveal two trends in the four major LULC categories. Forest and rangeland have shrunk, on average, by 15% and 7.5% respectively while, bare soil and rocks outcrops have expanded by 89% and agriculture land by 7.2% in Kurram agency.The water bodies and snow cover have minor fluctuation in its land area. Major causes of shrinking greenery is attributed to high influx of Afghan refugees and high energy demand of growing population. However, with outflow of the refugees from Kurram agency the general trend in forest cover has reverted and deforestation rate has slowed down. 展开更多
关键词 巴基斯坦 陆地 机构 绿叶 西北 生物物理 农业土地 社会经济
下载PDF
Socio-Economic Drivers of Deforestation in Roghani Valley,Hindu-Raj Mountains,Northern Pakistan 被引量:1
2
作者 Fazlur RAHMAN fazlul haq +1 位作者 Iffat TABASSUM Ihsan ULLAH 《Journal of Mountain Science》 SCIE CSCD 2014年第1期167-179,共13页
Deforestation and associated ecological disturbances are the issues of global concern.Researchers have investigated a number of driving forces which accelerate the rate of deforestation at local and regional levels.Th... Deforestation and associated ecological disturbances are the issues of global concern.Researchers have investigated a number of driving forces which accelerate the rate of deforestation at local and regional levels.These include poverty,population growth,market demand and prices,political instability,agricultural expansion and changes in property right and ownership regimes.This paper seeks to explore the impacts of population growth,changing tenure system and other socioeconomic factors on the forest cover of Roghani Valley,located in Hindu Raj Mountains,Northern Pakistan.The present study is mainly based on information collected through participatory observation,selfadministered interviews and questionnaire survey.Geographical Information System(GIS) database is also used for mapping and quantification.The results reveal that in the past three to four decades the study area has been subjected to severe deforestation and about half of the forest area has been converted into barren land.Thus,the area under natural forests decreased from 2099 to 1444 hectares in four decades.This large-scale deforestation is attributed to both proximate and under lying causes particularly traditional land tenure system and demographic development.Consequently,forest resources have been degraded and a number of plant species have disappeared from the forests of the study area while several others are in the process of disappearance. 展开更多
关键词 DEFORESTATION Natural Vegetation COVER Population Growth Traditional TENURE Systems LAND Use and LAND COVER Change Household Dynamics
下载PDF
Dynamics of Communal Land Degradation and Its Implications in the Arid Mountains of Pakistan:A Study of District Karak, Khyber Pakhtunkuwa
3
作者 Iffat TABASSUM Fazlur RAHMAN fazlul haq 《Journal of Mountain Science》 SCIE CSCD 2014年第2期485-495,共11页
Similar to other areas of Pakistan, land resources in Khyber Pakhtunkhwa(KP) is kept under various ownership regimes for socio-economic and ecological benefits. For the last three to four decades, communal lands and r... Similar to other areas of Pakistan, land resources in Khyber Pakhtunkhwa(KP) is kept under various ownership regimes for socio-economic and ecological benefits. For the last three to four decades, communal lands and resources are subjected to high rate of degradation and deterioration, which is leading to multifarious socio-economical and ecological implications. This paper intends to look into factors that are responsible for the degradation of communal land and the adaptability of the management mechanisms developed by the local inhabitants to conserve these resources. Moreover, this study also explores the sustainability of these adopted strategies in present circumstances. Data regarding socio-economic parameters of the inhabitants and their interactions with communal lands were collected through questionnaire cum interview method. As long-term climatic data for the area do not exist therefore focus group discussions were conducted to document the changing trend in rainfall regimes and temperature variations for the last about four decades. Results indicate that communal lands are highly vulnerable to degradation due to biophysical and anthropogenic factors. Local inhabitants have developed suitable measures to control the situation, however, accelerated socioeconomic transformations in the area have weakened the role of local institutions and that led to further degradation of these resources. Nevertheless, a number of locally formulated rules have been revived and implemented and it is hoped that these threatened resources would be conserved. 展开更多
关键词 土地退化 巴基斯坦 干旱山区 研究区 动力学 土地资源 社会经济 生态效益
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部