湖州市四种农田生态系统中，以林草系统最稳定，而桑园系统最容易发生土壤微量元素的缺乏状况。

In the four agricultural ecosystem of Huzhou City the forest-grass ecosystem was the most stable and the Mulberry ecosystem easiest to suffer the lack of the trace elements.

youdao

在佳木斯，有一种产生过量的母猪，发生在城市的自然生态环境已开始提高在过去几年。

In Jiamusi, there is an overproduction of boars occurring in the city as the natural and ecological environment has begun to improve over the past few years.

youdao

近年来，球形棕囊藻赤潮在我国东南沿海频频发生，不仅破坏了海洋生态环境，还造成了经济上的巨大损失。球形棕囊藻具有复杂的异型生活史，有单细胞和群体两种不同的生活形态。

The Phaeocystis globosa red tide occurs frequently in the Southern and eastern Sea of China, resulting in the destruction of marine ecological environment and economic losses in recent years.

youdao