Table 1.

The total nighttime lights related to karst rocky desertification in southern China.

DD	Name	Year							Mean
		2012	2013	2014	2015	2016	2017	2018
		(nano-Wcm−2sr−1)
L	Guangdong	739	721	820	642	573	709	744	707
	Guangxi	4554	5051	5037	5678	5991	7518	8253	6012
	Guizhou	6369	8761	8566	7826	10,175	14,398	13,591	9955
	Yunnan	3530	4031	3458	3922	3375	5160	5498	4139
	Chongqing	784	985	809	770	1085	1542	1413	1055
	Sichuan	456	574	484	442	415	523	588	497
	Total	16,433	20,123	19,174	19,281	21,613	29,850	30,087	22,366
M	Guangdong	231	281	239	218	204	284	336	256
	Guangxi	2604	2657	2758	2997	3219	4023	4322	3226
	Guizhou	4350	4725	4659	4494	5064	6,025	5556	4982
	Yunnan	3860	4294	4083	4420	4037	5371	5873	4563
	Chongqing	433	568	424	465	490	731	723	548
	Sichuan	469	793	474	393	378	461	565	505
	Total	13,960	15,332	14,652	15,002	15,408	18,912	19,393	16,094
S	Guangdong	253	246	224	189	163	211	237	218
	Guangxi	1361	1580	1445	1281	1474	1756	1694	1513
	Guizhou	1201	1688	1510	1798	2938	3859	3295	2327
	Yunnan	4142	4082	3739	3756	3262	4211	4634	3975
	Chongqing	284	276	231	207	279	322	308	272
	Sichuan	31	38	35	34	38	51	50	40
	Total	7273	7911	7183	7265	8155	10,409	10,218	8345

Note: DD represents the degree of karst rocky desertification; L represents slight karst rocky desertification areas; M represents moderate karst rocky desertification areas; and S represents severe karst rocky desertification areas.