[Retracted] Water Environment Governance of Urban and Rural Spaces Integrating Natural Ecological Landscape Design Method

Table 4

Statistics on water quality of urban lakes.

Serial number	Lake	2013	2014	2015	2016	2017
1	Tuancheng Lake	II	II	II	II	II
2	Kunming Lake	II	II	II	II	II
3	Yuanmingyuan Hu	III	III	III	IV	IV
4	Bayi Lake	III	III	V	IV	IV
5	Yuyuantan Hu	III	III	V	IV	IV
6	Zizhuyuan Lake	III	III	II	III	III
7	Six seas	III	III	III	III	IV
8	The back lake of the exhibition hall	II	IV	III	II	II
9	Tongzi River	IV	V	III	IV	V