A YouTube map that shows where people are when they view the videos. That the video might be of interest to a dry country like Niger – where herding of goats and other livestock is so important – is not so surprising.
A colleague of mine recently sent a link to a group of us showing some photos taken in Inner Mongolia, China, showing the land degradation being suffered there and its impacts. One of the photos (#16) shows a twisted and broken tree trunk surrounded by sand on the edge of the Taklamakan Desert. The caption says that the trees were “killed by the moving sands.” I have a different take on it.
The picture shows what is probably a Euphrates Poplar, and I would suggest that the trees were probably killed by its surface roots becoming roasted after herds of goats and other livestock ate the trees' fallen leaves. These leaves would normally act as a natural insulation layer and mulch, and over time quite a number of plants grow in the shade and protection. With the trees steadily roasted, so the whole area degrades and the sand blows in. You can see one of the World Bank’s senior agriculturalists, Rick Chisholm, explaining this in the first of my two YouTube videos on Lake Aibi in northwest, Xinjiang, China. (Go straight to 8m 30s on the time line to see the specific segment).