Nature-lover

The amateur nature-lover proceeds over the down, appreciating all this as hard as he can appreciate, and anon gazing up at the grey and white cloud shapes melting slowly from this form to that, and showing lakes, and wide expanses, and serene distances of blue between their gaps.

Source: wiktionary

I had known the President several years before he became famous, and we had had some correspondence on subjects of natural history. His interest in such themes is always very fresh and keen, and the main motive of his visit to the Park at this time was to see and study in its semi-domesticated condition the great game which he had so often hunted during his ranch days; and he was kind enough to think it would be an additional pleasure to see it with a nature-lover like myself.

Source: wiktionary

The nature-lover who lives with his fields and skies simply puts himself in the way of the most and gentlest of such inspirations.

Source: wiktionary

Unfortunately, this great rocky tableland has of late years become almost a terra incognita to the nature-lover, as a result of the agreement which was made, after prolonged controversy, between the Peak District Society and the grouse-shooting landlords, inasmuch as, while permitting the traveller to skirt the shoulders of the hill, it excluded him wholly from its summit.

Source: wiktionary