The abundance and availability of water and nutrients in a soil ecosystem determine its fertility.

土壤生态系统中水分和养分的丰度和有效性决定土壤的肥力。

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It points out that it is of great importance for protecting soil ecosystem to prevent and cure pollution of heavy metals.

指出，防治重金属污染，对保护土壤生态系统具有重大意义。

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It was concluded that tourism activities significantly affected the soil ecosystem in the Zhangjiajie National Forest Park.

旅游活动已对张家界国家森林公园土壤生态系统产生了较大影响。

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Biodiversity, which includes species, ecosystems, and ecological processes, is essential for the long-term maintenance of ecosystem services like photosynthesis, nutrient recycling, soil fertility, provision of fresh water, disaster prevention, and many others.

FORBES: Conservation International: Stemming the Tide of Environmental Crises, Part Five

Increased soil erosion and sedimentation rates can also jeopardize the array of ecosystem ser-vices provided by the watersheds.

UNESCO: Dublin Core