I assume that by 'the environment' what is meant is what we would usually refer to as 'the countryside'. It has always amused me to see how 'environmentalists' seek to preserve 'the countryside' as if it were a natural phenomenon. In the UK, with few exceptions such as the remnants of Royal hunting forests, landscaped parkland etc., the rural environment is the present day result of 10,000 years of farming - ie. food production, or occasionally as in the case of vast tracts of conifer plantations, of timber production.
If we were able to go back 2000 years to Roman times, the place would look entirely different and it would have changed only a little 1000 years ago. The real changes would have occurred only in the past 400 years, with greater industrial requirement for timber, increasing population, followed by population shift to the industrial areas. The 18th and 19th centuries brought advances in agricultural practices with horse-drawn mechanisation, followed in the 20th century by the impact of the internal combustion engine and the swift, reliable transport infrastructure and the impact of artificial fertilisers, pesticides and insecticides.
In short, apart from the wild mountainous areas of the country, Forestry Commission lands and the Grouse moor playgrounds of the wealthy, 'the environment' IS the farmed environment. The only difference since WWII is that changes have not just been influenced by economics and technology, but also by Government and now EU policy and subsidies. The policies designed to influence the impact of farming on the environment are largely the carrot of subsidies and the the stick of Cross Compliance.
When ELS came in we were going to sign up on the dotted line, unfortunately the mess ups with our maps meant delay after delay and we didn't sign up at the start. On reflection I have now come to the conclusion that, although we have oodles of points and would have to change very little about the way we manage our land, the rate per Hectare on offer is not enough to warrant the time and effort needed to ensure compliance and be subject to more officialdom. With the planned increases in modulation of the SFP, it won't be long before the same factors apply to that. With greater returns from arable crops in prospect there must be many farming businesses for which the day will soon arrive where opting out of SFP will pay dividends.
The UK government seems hell-bent on eliminating payments to farmers as soon as possible - setting us free in the world market place being the watch-words. The general public and, for the most part unintelligent, politicians seem to have a view of agriculture and the countryside formed not from the grindingly realistic rural literature of Thomas Hardy but more HE Bates's 1950's, subsidy fuelled, bucolic idylls of the Larkin family of The Darling Buds of May.
So who makes a living from 'the environment'? Apart from the odd dry-stone waller, hedge-layer and Bill Oddie and the BBC wildlife unit, only a few thousand bureaucrats I guess.