gistfile1.sql

SELECT row_to_json(fc) FROM ( 
SELECT ST_AsGeoJSON(ST_Transform(ST_Intersection(lg.geometry, bbox.geom), 4326))::json As geometry, ( 
SELECT row_to_json(t) FROM ( 
SELECT "name","type","area","z_order") t ) As properties FROM osm_landusages As lg, (
SELECT ST_Transform(ST_MakeEnvelope(-2.8125,38.82259097617711,25.312499999999986,57.326521225217064, 4326),3857) as geom) as bbox 
WHERE ST_Intersects(lg.geometry, bbox.geom)  
AND (area > 200000000) ) fc;