(资料图片)
走进三江源地区,印象里的碧水长江竟然换了面貌。长江源区水体为啥泥沙浓重?水体浑浊是否等于水质不佳?一路向东,江水又为何越流越清澈?听听专家怎么说。
记者:陈梦、柳泽兴
新华社音视频部制作
2026-07-13
2026-07-12
2026-07-10
2026-07-05
2026-07-04
2026-07-02
2026-06-28
2026-06-27
2026-06-25
2026-06-23
2026-06-22
2026-06-20
2026-06-19
2026-06-18
2026-06-17
2026-06-16
2026-06-15
2026-06-14
2026-06-12
2026-06-10
2026-06-08
2026-06-07
2026-06-06
2026-06-05
2026-06-04
2026-06-02
2026-05-29
2026-05-28
2026-05-27
2026-05-26
2026-05-25
2026-05-24
2026-05-23
2026-05-21
2026-05-20
2026-05-19
2026-05-18
2026-05-13