Impacts of Intensified Agriculture Developments on Marsh Wetlands

Table 1

Transformation matrix of landscape and land use within the study area during the period from 1975 to 1989 (unit: km²).

1975	1989
	Marsh	River and pool	Forest	Meadow	Paddy field	Dry farmland	Other types	Total	Proportion (%)
Marsh	759.87	16.18	72.20	137.31	252.9	383.30	0	1621.74	67.10
River and pool	9.20	206.93	7.39	19.29	5.61	7.75	0	256.17	10.60
Forest	24.79	5.45	86.11	14.14	44.27	62.22	0	236.96	9.81
Meadow	36.37	9.95	22.05	72.68	15.74	33.12	0	189.90	7.86
Paddy field	0	0	0	0	0	0	0	0	0
Dry farmland	22.70	0.04	1.85	3.41	32.65	51.38	0	112.03	4.64
Other types	0	0	0	0	0	0	0	0	0
Total	852.92	238.54	189.60	246.82	351.16	537.76	0	2416.80
Proportion (%)	35.29	9.87	7.85	10.21	14.53	22.25	0	100
Variation rate (%)	−47.41	−6.88	−19.99	+29.97	/	+380.01	0