Question

下图是黄土高原的景观图，读图回答：

（1）请你用简短的语言概括该高原的地表形态特征。
                                                                                                                                                    

（2）请根据（1）项思考：黄土高原主要的生态环境问题是什么？你认为治理的主要办法有哪些？
                                                                                                                                                                
                                                                                                                                                                

（3） “地上河”分布在黄河的哪个河段？形成原因是什么？ 
                                                                                                                                                                  

Answer 1

（1）千沟万壑、支离破碎。
（2）水土流失严重植树种草，退耕还林、退耕还草。
（3）下游。黄河中游流经黄土高原，水土流失严重，进入下游平原地区，河道变宽，坡度变缓，河水流速减慢，泥沙沉积，使河床逐渐抬高，成为“地上河”。