We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
LAND COVER MAPPING AND CROP PHENOLOGY OF POTOHAR REGION, PUNJAB, PAKISTAN.
- Authors
Amir, Sarah; Saqib, Zafeer; Khan, Amina; Khan, M. Irfan; Khan, M. Azeem; Majid, Abdul
- Abstract
Agriculture a major source of food and fibre affects the natural land cover and in turn is affected by climatic factors like temperature and precipitation patterns beside other factors. The soil temperature and moisture, wind, relative humidity and crop water requirements also affect the crop growth. Local farming practices also alter the natural landscape structure and biodiversity in croplands. This study was conducted with the objective to find out seasonality trend and to determine the land cover classification in Potohar region using Normalized Difference Vegetation Index (NDVI). Moreover, random points throughout the study area were selected in order to detect the vegetation index pattern in different land cover types. For land cover classification and acquiring seasonality trend, crop growth patterns were determined by phenological phases of a particular crop. Land cover was classified with standard Level 1 Terrain-corrected (L1T) orthorectified images from Landsat 8 from years 2012 to 2016. Seven land cover classes within the study area were identified namely; agriculture, grasses, forest, shrubs/tall herbs, bare soil, built-up and water bodies. Moreover, the seasonality trend over the study was found related to different land cover classifications using 959 sample plots with 97.81% accuracy. The phase trend analysis determined the change in vegetation cover during the years under study, which was correlated to precipitation patterns in Potohar. The NDVI pattern was highly fluctuating in agricultural land cover due to seasonal crop growth but it remained stable throughout the year in forest covers. Urban land cover was found to have high impact on nearby vegetation as it was related to change in land cover type, which affected the climate of the area. Climate being a vital deriving force, affected precipitation patterns of the rain-fed (barani) land which in turn shifted the seasonal growth of various agricultural crops.
- Subjects
POTWAR Plateau (Pakistan); LAND cover; PLANT phenology; SOIL temperature; CLIMATE change
- Publication
Pakistan Journal of Agricultural Sciences, 2019, Vol 56, Issue 1, p187
- ISSN
0552-9034
- Publication type
Article
- DOI
10.21162/PAKJAS/19.7663