Table 1.

Effects of period and location on accumulated land conversion and yearly ecological degradation of the natural coastal wetlands in area in the three city cluster regions explored by analysis of variance (ANOVA)-Repeated Measures.

Item	df	Land conversion loss				Yearly ecological degradation
		Accumulated loss area, km2 since 1990		% of coastal wetland area in 1990		Area, km2 in the investigation year		% of remaining coastal wetland area in the investigation year
		F	P	F	P	F	P	F	P
Period	1	77.9	<0.001	100.5	<0.001	7.6	0.022	8.1	0.019
Location	2	20.1	<0.001	12.4	0.003	3.2	0.090	3.1	0.097
Interaction	2	20.3	<0.001	12.5	0.003	3.2	0.087	3.1	0.094