Urban　ecosystems　in　cities,　such　as　urban　green　spaces,　provide　diverse　amenities　and　areas　for　relaxation　to　the　public.　However,　the　public＇s　understanding　of　the　value　of　urban　ecosystems　in　cities　has　not　been　widely　explored.　This　study　aims　to　elucidate　the　value　attributed　to　urban　ecosystems　in　an　area　by　targeting　green　spaces　in　the　Pinggu　District　of　Beijing,　China.　A　dedicated　questionnaire　survey　was　conducted　to　investigate　the　public＇s　willingness-to-pay　(WTP)　to　conserve　green　spaces　and　to　evaluate　the　non-use　value　of　urban　green　spaces　following　the　contingent　valuation　method　(CVM).　Policies　for　preserving　and　protecting　urban　ecosystems　in　urban　areas　are　then　proposed.　A　valid　sample　of　1000　respondents　was　surveyed　face-to-face　in　the　Pinggu　District,　Beijing.　The　key　findings　are　as　follows:　(1)　55.90%　of　the　respondents　would　be　willing　to　pay　to　conserve　green　spaces,　and　the　respondents　that　would　not　be　willing　believed　that　government　should　be　responsible　for　preserving　and　improving　green　spaces;　(2)　the　mean　annual　WTP　and　non-use　values　of　green　spaces　were　57.56　CNY　and　26.25　million　CNY　without　considering　the　＂unwilling　to　pay＂　responses,　and　the　values　were　40.06　CNY　and　18.27　million　CNY　considering　the　full　sample,　respectively;　(3)　the　environmental　awareness　key　factor　influencing　WTP　positively,　however,　higher　education　and　income　levels　negatively　affected　WTP,　which　were　explored　through　logistic　regression　and　Pearson　correlation　analyses.　It　is　necessary　to　enhance　ecological　education　for　the　sustainable　preservation　for　long　term.