Everything is product of the environment. The prerequisite and key of species forming is the ecological environments, such as geography, climate, water, soil, biological chain and so on.

万物都是环境的产物，地理、气候、水质、土壤、生物链等构成的生态环境是物种成型的前提和关键。

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Its conservation is key to the sustainable propagation of Antarctic species.

对它的保护对维持南极物种繁衍可持续性来说很关键。

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These include the centuries-old custom of "bul", where leaders would call a temporary stop to fishing for key species in order to give fish stocks an opportunity to replenish.

这些传统包括几个世纪以来被称之为“bul”的旧习俗，领导人会要求暂停捕捞一些重要种类的鱼，给鱼类总储备量繁衍补充的机会。

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These sites are well used by local people, the woodlands are sympathetically managed for wildlife and conservation of key species which includes co-ordinated management and felling.

BBC: Survey finds opposition to privatisation of forests

The objectives are to quantify the ocean soundscape on global scales, determine behavioral change thresholds of various species, and examine the functional relationship between sound and the viability of key marine organisms, at an individual scale, a species scale and the ecosystem level.

UNESCO: MEDIA SERVICES

The site is critical for the survival of several species of endangered waterbirds, to which the key threat is large-scale egg and chick collection by villagers.

UNESCO: OFFICE IN PHNOM PENH