an increasing trendP <0.05
The area of showing an increasing trend accounted for 85.46% of the study area, of which 33.29% increased significantly ( P <0.05).
The area of showing an increasing trend accounted for 85.46% of the study area, of which 33.29% increased significantly ( P <0.05).
The area of DNF GPP GS with an increasing trend (50.47%) was basically the same as the area with a decreasing trend (49.49%), but the much more of the increasing trend areas was significant (31.46% compared with 0.80%).