highly significantp < 0.01
This correlation is highly significant ( p < 0.01).
This correlation is highly significant ( p < 0.01).
From this year onward, and accounting for its inter-annual variability, each site precipitation exhibited a decreasing trend (Fig. 4 ).
However, the results of recent research show that precipitation in northwest China tended to decrease as a whole, but increased in particular areas, and drought had an increasing trend from 1961 to 2010 (Sun et al. 2013 ).