Gorgan University of Agricultural Sciences and Natural Resources Environmental Resources Research 2783-4832 7 1 2019 07 01 A study of the effect of changes in the area of Maharlu lake on climatic parameters of Shiraz and on land surface temperature of its surrounding areas 67 78 4645 10.22069/ijerr.2019.15120.1240 EN Mehran Fatemi meybod univesity Mahdi Narangifard yazduniversity Journal Article 2018 05 21 Remote sensing is increasingly used in studies of periodic changes of land use and land<br />surface temperature (LST) calculations. In this paper, the effect of change in the area of<br />Maharlu Lake on climatic elements, land surface temperature and vegetation cover in the<br />areas surrounding the lake were studied. To this end, the ETM + & TM sensor data of<br />LANDSAT satellite on May 22, 1987, May 17, 2000, March 20, 1999 and March 18, 2009<br />were used. The findings suggested that the average percentage of vegetation index in the<br />10-km buffer of the lake in 1987 (wet year) compared to 2000 (dry year) had dropped by<br />15% in the same month. In March 1999 and 2009, however, only a 3 percent decline was<br />recorded. The minimum, average and maximum LST in the periphery of the lake registered<br />an increase on the same dates during the wet period, but the temperature pattern was<br />identical in both periods. Most climatic elements increased in dry years compared to that of<br />the wet years. Also, comparing the statistical features of climatic elements in synoptic<br />stations of Shiraz at the time of capturing images and for the long-term average (1956-<br />2012) suggested a relatively lower increase in temperature during wet years compared to<br />the average long-term period. In most of the years when the precipitation was below<br />average (300 mm), the lake dried in May. In contrast, in years when the precipitation was<br />more than 400 mm, the lake received abundant rainfall in all months. The heavy<br />dependence of the lake on rainfall, the small size of the catchment and the seasonality of<br />rivers flowing into the lake make conditions extremely sensitive, critical and rainfalldependent https://ijerr.gau.ac.ir/article_4645_baf70470e207198cafa679e93ba1b08d.pdf