Open Access Research Paper Views (687) Spatial and temporal variations of precipitation: case study of Zhanghe River Basin, P. R. China Bakhtawar Wagan, Hakimzadi, Zulfiqar Ali J. Biodiv. & Environ. Sci. 7(3), 76-86, September 2015. Keywords: Drought, Mann-Kendall test, Precipitation, Trends analysis Details