下图反映我国某农村生活能源构成情况。读图回答下列问题：

（1）该地生活能源构成的突出特点是                                                                                                   。

（2）这种能源构成引发的环境问题是                                                                                                      

                                                                                                                                                            。

（3）改变这种状况的主要途径有                                                                                                            

                                                                                                                                                            。

尺寸链中增环是指该环增大时，封闭环也增大。