Correction: Xu J., et al. Dynamic Analysis of Ecological Environment Quality Combined with Water Conservation Changes in National Key Ecological Function Areas in China. Sustainability 2018, 10, 1202

The authors were not aware of errors made in the proofreading phase, and, hence, wish to make the following corrections to this paper [1]:

(1) The codes of the National Key Ecological Function Areas (NKEFAs) in the original manuscript were disordered, as follows:

Table 1. Names, abbreviations and codes for the 25 National Key Ecological Function Areas (NKEFAs).

Name of Ecological Function Area	Abbr.	Code	Name of Ecological Function Area	Abbr.	Code
Desertification Control Ecological Function Area in the Alkin Grassland	AEJ	1	Desertification Control Ecological Function Area in the Hunshandake Sandland	HSDK	14
Steppe Ecological Function Area on Altai Mountain	AET	2	Ecological Function Area in the Horqin Grassland	KEQ	15
Forest Ecological Function Area on the Edge of the Plateau in the Southeast of Tibet	ZDN	3	Forest and Biodiversity Ecological Function Area on Nanling Mountain	NL	16
Desert Ecological Function Area on the Northwest Qiangtang Plateau	ZXB	4	Glacier and Water Conservation Ecological Function Area on Qilian Mountain	QLS	17
Forest Ecological Function Area on Changbai Mountain	CBS	5	Biodiversity Ecological Function Area of Qinba Mountain	QB	18
Forest and Biodiversity Ecological Function Area of Yunnan and Sichuan	CD	6	Wetland Ecological Function Area of the Zoige County Grassland	REG	19
Soil Conservation Ecological Function Area of Dabie Mountain	DBS	7	Wetland Ecological Function Area of the Three River Plain	SJ	20
Forest Ecological Function Area of the Great Khingan and Lesser Khingan Mountains	XAL	8	Wetland Ecological Function Area of Sanjiangyuan National Nature Reserve	SJY	21
Significant Water Source Recharging Ecological Function Area of Southern Gansu Province	GN	9	Soil Conservation Ecological Function Area of the Three Gorges Reservoir Region	SX	22
Stony Desertification Control Ecological Function Area of Guangxi-Guizhou-Yunnan	GQD	10	Desertification Control Ecological Function Area of Tarim River Basin	TLM	23
Tropical Rainforest Ecological Function Area in Mountain Areas in the Middle of Hai’nan Island	HND	11	Biodiversity and Soil Conservation Ecological Function Area in Wuling Mountain	WLS	24
Ecological Function Area on Hulun Buir Pasture Land	HLBR	12	Grassland Ecological Function Area in the Northern Foot of Yinshan Mountain	YS	25
Hill and Ravine Soil Conservation Ecological Function Area on the Loess Plateau	HTGY	13

Table 1. Names, abbreviations and codes for the 25 National Key Ecological Function Areas (NKEFAs).

Name of Ecological Function Area	Abbr.	Code	Name of Ecological Function Area	Abbr.	Code
Desertification Control Ecological Function Area in the Alkin Grassland	AEJ	1	Desertification Control Ecological Function Area in the Hunshandake Sandland	HSDK	14
Steppe Ecological Function Area on Altai Mountain	AET	2	Ecological Function Area in the Horqin Grassland	KEQ	15
Forest Ecological Function Area on the Edge of the Plateau in the Southeast of Tibet	ZDN	3	Forest and Biodiversity Ecological Function Area on Nanling Mountain	NL	16
Desert Ecological Function Area on the Northwest Qiangtang Plateau	ZXB	4	Glacier and Water Conservation Ecological Function Area on Qilian Mountain	QLS	17
Forest Ecological Function Area on Changbai Mountain	CBS	5	Biodiversity Ecological Function Area of Qinba Mountain	QB	18
Forest and Biodiversity Ecological Function Area of Yunnan and Sichuan	CD	6	Wetland Ecological Function Area of the Zoige County Grassland	REG	19
Soil Conservation Ecological Function Area of Dabie Mountain	DBS	7	Wetland Ecological Function Area of the Three River Plain	SJ	20
Forest Ecological Function Area of the Great Khingan and Lesser Khingan Mountains	XAL	8	Wetland Ecological Function Area of Sanjiangyuan National Nature Reserve	SJY	21
Significant Water Source Recharging Ecological Function Area of Southern Gansu Province	GN	9	Soil Conservation Ecological Function Area of the Three Gorges Reservoir Region	SX	22
Stony Desertification Control Ecological Function Area of Guangxi-Guizhou-Yunnan	GQD	10	Desertification Control Ecological Function Area of Tarim River Basin	TLM	23
Tropical Rainforest Ecological Function Area in Mountain Areas in the Middle of Hai’nan Island	HND	11	Biodiversity and Soil Conservation Ecological Function Area in Wuling Mountain	WLS	24
Ecological Function Area on Hulun Buir Pasture Land	HLBR	12	Grassland Ecological Function Area in the Northern Foot of Yinshan Mountain	YS	25
Hill and Ravine Soil Conservation Ecological Function Area on the Loess Plateau	HTGY	13

The following table has been modified for consistency with the figures used in the paper:

Table 1. Names, abbreviations and codes for the 25 National Key Ecological Function Areas (NKEFAs).

Name of Ecological Function Area	Abbr.	Code	Name of Ecological Function Area	Abbr.	Code
Forest Ecological Function Area of the Great Khingan and Lesser Khingan Mountains	XAL	1	Ecological Function Area in the Horqin Grassland	KEQ	14
Forest Ecological Function Area on Changbai Mountain	CBS	2	Desertification Control Ecological Function Area in the Hunshandake Sandland	HSDK	15
Steppe Ecological Function Area on Altai Mountain	AET	3	Grassland Ecological Function Area in the Northern Foot of Yinshan Mountain	YS	16
Glacier and Water Conservation Ecological Function Area on Qilian Mountain	QLS	4	Desertification Control Ecological Function Area in the Alkin Grassland	AEJ	17
Significant Water Source Recharging Ecological Function Area of Southern Gansu Province	GN	5	Desertification Control Ecological Function Area of Tarim River Basin	TLM	18
Wetland Ecological Function Area of the Zoige County Grassland	REG	6	Desert Ecological Function Area on the Northwest Qiangtang Plateau	ZXB	19
Wetland Ecological Function Area of Sanjiangyuan National Nature Reserve	SJY	7	Forest Ecological Function Area on the Edge of the Plateau in the Southeast of Tibet	ZDN	20
Forest and Biodiversity Ecological Function Area on Nanling Mountain	NL	8	Forest and Biodiversity Ecological Function Area of Yunnan and Sichuan	CD	21
Hill and Ravine Soil Conservation Ecological Function Area on the Loess Plateau	HTGY	9	Biodiversity Ecological Function Area of Qinba Mountain	QB	22
Soil Conservation Ecological Function Area of Dabie Mountain	DBS	10	Biodiversity and Soil Conservation Ecological Function Area in Wuling Mountain	WLS	23
Soil Conservation Ecological Function Area of the Three Gorges Reservoir Region	SX	11	Wetland Ecological Function Area of the Three River Plain	SJPY	24
Stony Desertification Control Ecological Function Area of Guangxi-Guizhou-Yunnan	GQD	12	Tropical Rainforest Ecological Function Area in Mountain Areas in the Middle of Hai’nan Island	HND	25
Ecological Function Area on Hulun Buir Pasture Land	HLBR	13

Table 1. Names, abbreviations and codes for the 25 National Key Ecological Function Areas (NKEFAs).

Name of Ecological Function Area	Abbr.	Code	Name of Ecological Function Area	Abbr.	Code
Forest Ecological Function Area of the Great Khingan and Lesser Khingan Mountains	XAL	1	Ecological Function Area in the Horqin Grassland	KEQ	14
Forest Ecological Function Area on Changbai Mountain	CBS	2	Desertification Control Ecological Function Area in the Hunshandake Sandland	HSDK	15
Steppe Ecological Function Area on Altai Mountain	AET	3	Grassland Ecological Function Area in the Northern Foot of Yinshan Mountain	YS	16
Glacier and Water Conservation Ecological Function Area on Qilian Mountain	QLS	4	Desertification Control Ecological Function Area in the Alkin Grassland	AEJ	17
Significant Water Source Recharging Ecological Function Area of Southern Gansu Province	GN	5	Desertification Control Ecological Function Area of Tarim River Basin	TLM	18
Wetland Ecological Function Area of the Zoige County Grassland	REG	6	Desert Ecological Function Area on the Northwest Qiangtang Plateau	ZXB	19
Wetland Ecological Function Area of Sanjiangyuan National Nature Reserve	SJY	7	Forest Ecological Function Area on the Edge of the Plateau in the Southeast of Tibet	ZDN	20
Forest and Biodiversity Ecological Function Area on Nanling Mountain	NL	8	Forest and Biodiversity Ecological Function Area of Yunnan and Sichuan	CD	21
Hill and Ravine Soil Conservation Ecological Function Area on the Loess Plateau	HTGY	9	Biodiversity Ecological Function Area of Qinba Mountain	QB	22
Soil Conservation Ecological Function Area of Dabie Mountain	DBS	10	Biodiversity and Soil Conservation Ecological Function Area in Wuling Mountain	WLS	23
Soil Conservation Ecological Function Area of the Three Gorges Reservoir Region	SX	11	Wetland Ecological Function Area of the Three River Plain	SJPY	24
Stony Desertification Control Ecological Function Area of Guangxi-Guizhou-Yunnan	GQD	12	Tropical Rainforest Ecological Function Area in Mountain Areas in the Middle of Hai’nan Island	HND	25
Ecological Function Area on Hulun Buir Pasture Land	HLBR	13

(2) Table 6: the third column header of the original table—“Water-Source Conservation Functional Area”—was wrong. The original table was as follows:

Table 6. The type of land conversion in NKEFA in 2000–2010.

Type	Water-Source Conservation Functional Area	Water-Source Conservation Functional Area	Windbreak and Sand Fixation Functional Area	Biodiversity Maintenance Functional Area
1	GN	GQD, HTGY, SX	YS	CD, QB, WLS
2				ZDN, ZXB
3	XAL, REG, CBS, SJY	DBS	HLBR, HSDK, KEQ	HND, NL, SJPY
4	QLS		AEJ
5	AET		TLM

Table 6. The type of land conversion in NKEFA in 2000–2010.

Type	Water-Source Conservation Functional Area	Water-Source Conservation Functional Area	Windbreak and Sand Fixation Functional Area	Biodiversity Maintenance Functional Area
1	GN	GQD, HTGY, SX	YS	CD, QB, WLS
2				ZDN, ZXB
3	XAL, REG, CBS, SJY	DBS	HLBR, HSDK, KEQ	HND, NL, SJPY
4	QLS		AEJ
5	AET		TLM

The correct header is “Soil and Water Conservation Functional Area”, as shown in the corrected table:

Table 6. The type of land conversion in NKEFAs in 2000–2010.

Type	Water-Source Conservation Functional Area	Soil and Water Conservation Functional Area	Windbreak and Sand Fixation Functional Area	Biodiversity Maintenance Functional Area
1	GN	GQD, HTGY, SX	YS	CD, QB, WLS
2				ZDN, ZXB
3	XAL, REG, CBS, SJY	DBS	HLBR, HSDK, KEQ	HND, NL, SJPY
4	QLS		AEJ
5	AET		TLM

Table 6. The type of land conversion in NKEFAs in 2000–2010.

Type	Water-Source Conservation Functional Area	Soil and Water Conservation Functional Area	Windbreak and Sand Fixation Functional Area	Biodiversity Maintenance Functional Area
1	GN	GQD, HTGY, SX	YS	CD, QB, WLS
2				ZDN, ZXB
3	XAL, REG, CBS, SJY	DBS	HLBR, HSDK, KEQ	HND, NL, SJPY
4	QLS		AEJ
5	AET		TLM

(3) Figure 4: The legend defining the colors used to indicate biomass density was reversed in the original manuscript:

Figure 4. Spatial distribution of biomass of NKEFAs in 2000, 2010.

Figure 4. Spatial distribution of biomass of NKEFAs in 2000, 2010.

This should be replaced with:

Figure 4. Spatial distribution of biomass of NKEFAs in 2000, 2010.

Figure 4. Spatial distribution of biomass of NKEFAs in 2000, 2010.

(4) Figure 5: The unit of biomass density was originally g·m⁻² and the unit of fractional vegetation coverage was %:

Figure 5. Biomass density, total biomass, FVC of NKEFAs in 2000, 2010.

Figure 5. Biomass density, total biomass, FVC of NKEFAs in 2000, 2010.

The unit of biomass density should be replaced with kg·m⁻² and the unit of fractional vegetation coverage should be omitted:

Figure 5. Biomass density, total biomass, FVC of NKEFAs in 2000, 2010.

Figure 5. Biomass density, total biomass, FVC of NKEFAs in 2000, 2010.

(5) Section 3.2. (Ecological Environment Quality Change Trends): The unit of total biomass was formatted incorrectly as: Pg (1 Pg = 1015 g). This should be replaced with Pg (1 Pg = 10¹⁵ g) in the fourth line of the second paragraph in Section 3.2. (Ecological Environment Quality Change Trends).

The authors would like to apologize for any inconvenience caused to readers by these changes. The manuscript will be updated and the original will remain online on the article’s webpage.