Temperature
Vegetation cools in two main ways: firstly by creating shade and secondly through transpiration (when plants release moisture). The impact of vegetation on the micro-climate can be clearly seen in this picture of a water bund.
Look at the temperature difference between the vegetation inside the bunds and the surrounding base soil. The soil within the bund is much cooler thanks to the vegetation.
 
     
                             
                             
                             
                             
                             
                             
                         
                         
                         
                         
                         
                                                                                     
                                                                                     
                                                                                     
                                                                                     
                                                                                     
                                                                                     
                                                                             
     
     
     
     
     
     
     
                            
                                                 
                            
                                                 
                            
                                                 
                            
                                                 
                            
                                                