Materials and methods
In this study, we focus on Islamabad, the capital city of Pakistan and come under Federally Administered Capital Territory. Islamabad was planned as capital city of the country, in the 1960s to replace Karachi. It is located in the northeastern part of the country, between 33º 49´ North latitude and 72° 24´ East longitude, at the crossroads of Punjab and Khyber Pakhtunkhwa provinces with the Margalla pass as the gateway between the two regions. The total area of Islamabad is 906 square kilometers including diverse geographic features and land cover. Islamabad lies at an altitude range of 457-610m. The monsoon and western disturbance are the two main factors that change the weather over the Islamabad, according to Koppen climate classification system Islamabad has a humid subtropical climate. The average monsoon rainfall of Islamabad is 790.9 mm, June is the hottest moth, where average temperate is 38 °C. The map of study area shown in Fig.1.