Therefore, soil and water conservation measures on water resources and water environment impact study have been imperative.

因此，进行水土保持措施对水资源与水环境的影响研究已经势在必行。

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Mr Dodson also accuses the agency of not carrying out an environment impact study before going ahead with the work to encourage otters on the river Cegin.

BBC: Environment Agency sued over carp-eating otters