Ecological Processes

Table 6 Total economic value of each ecosystem from 1980 to 2005 (billon USD)

From: Impact of land use/land cover changes on ecosystem services in the Nenjiang River Basin, Northeast China

	1980	Percent	Rank	2005	Percent	Rank	Change	Percent	Rank	Trend
Forest	40.00	40.03	1	38.71	39.70	1	−1.29	−3.24	5	↓
Wetland	38.14	38.16	2	36.95	37.90	2	−1.18	−3.11	6	↓
Farmland	11.27	11.28	3	12.55	12.87	3	1.28	11.32	2	↑
Grassland	6.21	6.21	4	5.37	5.51	4	−0.84	−13.46	1	↓
Lakes/rivers	4.21	4.21	5	3.81	3.91	5	−0.40	−9.52	3	↓
Barren land	0.11	0.11	6	0.12	0.12	6	0.01	6.72	4	↑
Sum	99.94	100.00		97.51	100.00		−2.43	−2.43

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