网友的句子：as is the movement ...，是“比较状语从句”，也是“倒装句”。

as 引导比较状语从句时，可以倒装，也可以不倒装。而且是部分倒装：只需提前包括be 在内的助动词、情态动词。例如：

She’s unusually tall, as are both her parents (= as both her parents are).

她特别高，她父母也都那么高。

像她父母那样，她长得特别高。

They go to concerts frequently, as do I (= as I do).

他们经常去听音乐会，我也是。

他们和我一样，经常去听音乐会。

She looked quite interested in what I had to say, as did the woman sitting next to me (as the woman sitting next to me did).

她看起来对我说的颇感兴趣，坐在我边上的另一个女人也听得津津有味。

关于翻译，如前所示，可以有两种译法：

The occurrence and growth of many plant species are closely related to soil physical properties, as is the movement over and through soils of water and its dissolved nutrients and chemical pollutants.

【翻译1】许多植物种类的出现和生长都与土壤物理性质密切相关，水及其溶解的养分和化学污染物在土壤中的活动也是如此。

【翻译2】许多植物种类的出现和生长都与土壤物理性质密切相关，就像水及其溶解的养分和化学污染物在土壤中的活动一样。