Table 2. Characteristics of landscape types by time series

Landscape types			1950s		1980s		1990s		2000s		2010s		1950-2010s
			n	p	n	p	n	p	n	p	n	p	n	p
Natural landscape		Topography	97	18.5%	158	15.7%	106	15.3%	131	13.6%	120	13.6%	612	15.0%
		Plants	34	6.5%	106	10.5%	56	8.1%	102	10.6%	96	10.9%	394	9.7%
		Waterscape	41	7.8%	65	6.5%	47	6.8%	61	6.3%	55	6.2%	269	6.6%
		Animals	7	1.3%	10	1.0%	5	0.7%	7	0.7%	13	1.5%	42	1.0%
		Meteorology	11	2.1%	37	3.7%	24	3.5%	28	2.9%	24	2.7%	124	3.0%
		Season	7	1.3%	7	0.7%	6	0.9%	9	0.9%	7	0.8%	36	0.9%
		Time	11	2.1%	16	1.6%	12	1.7%	19	2.0%	16	1.8%	74	1.8%
Subtotal			208	39.6%	399	39.7%	256	36.8%	357	37.1%	331	37.5%	1,551	38.1%
Artificial landscape		Buildings	77	14.7%	118	11.7%	81	11.7%	110	11.4%	97	11.0%	483	11.9%
		Structures	65	12.4%	134	13.3%	115	16.5%	139	14.5%	124	14.0%	577	14.2%
		Relics	23	4.4%	30	3.0%	16	2.3%	30	3.1%	26	2.9%	125	3.1%
		Traffics	2	0.4%	3	0.3%	3	0.4%	3	0.3%	5	0.6%	16	0.4%
Subtotal			167	31.8%	285	28.4%	215	30.9%	282	29.3%	252	28.5%	1,201	29.5%
Human activities	Human beings		27	5.1%	75	7.5%	45	8.2%	76	7.9%	57	6.5%	280	6.9%
	Five Senses	Vision	11	2.1%	19	1.9%	15	2.2%	15	1.6%	15	1.7%	75	1.8%
		Hearing	4	0.8%	4	0.4%	6	0.7%	12	1.2%	5	0.6%	31	0.8%
		Smell	2	0.4%	2	0.2%	3	0.7%	5	0.2%	5	0.6%	17	0.4%
		Touch	2	0.4%	2	0.2%	4	0.1%	2	0.1%	3	0.3%	9	0.2%
		Taste	1	0.2%	1	0.1%	1	3.2%	1	3.6%	1	0.1%	60	1.5%
	External activities	Belief	10	1.9%	38	3.8%	22	0.7%	35	0.4%	25	2.8%	82	2.0%
		Production	3	0.6%	5	0.5%	5	3.0%	4	4.1%	6	0.7%	74	1.8%
		Action	22	4.2%	31	3.1%	21	7.1%	39	7.2%	49	5.5%	220	5.4%
	Internal activities	Image	37	7.0%	66	6.6%	49	7.1%	69	6.7%	63	7.1%	284	7.0%
		Semantics	31	5.9%	78	7.8%	53	7.6%	64	6.7%	71	8.0%	286	7.0%
Subtotal			150	28.6%	321	31.9%	224	32.2%	322	33.5%	300	34.0%	1,317	32.4%
Total			525	100.0%	1,005	100.0%	695	100.0%	961	100.0%	883	100.0%	4,069	100.0%