Spatiotemporal change of habitat quality in ecologically sensitive areas of eastern Qinghai-Tibet Plateau: A case study of the Hehuang Valley, Qinghai Province

Jie ZHU; Jian GONG; Jingye LI

doi:10.18402/resci.2020.05.16

Journals >Resources Science >Volume 42 >Issue 5 >Page 991 > Article

Resources Science
Vol. 42, Issue 5, 991 (2020)

Spatiotemporal change of habitat quality in ecologically sensitive areas of eastern Qinghai-Tibet Plateau: A case study of the Hehuang Valley, Qinghai Province

Jie ZHU¹, Jian GONG^1、2、*, and Jingye LI¹

Author Affiliations

¹School of Public Administration, China University of Geosciences, Wuhan 430074, China;

²Key Laboratory of Rule of Law Research, Ministry of Natural Resources, Wuhan 430074, China

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DOI: 10.18402/resci.2020.05.16 Cite this Article

Jie ZHU, Jian GONG, Jingye LI. Spatiotemporal change of habitat quality in ecologically sensitive areas of eastern Qinghai-Tibet Plateau: A case study of the Hehuang Valley, Qinghai Province[J]. Resources Science, 2020, 42(5): 991 Copy Citation Text

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Fig. 1. Geographical location and elevation of the Hehuang Valley

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Fig. 2. Landscape type distribution of the study area

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Fig. 3. Distribution of habitat quality of the Hehuang Valley, 1995-2015

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Fig. 4. Habitat quality index changes in different regions

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Fig. 5. Hotspots and coldspots of habitat quality of the Hehuang Valley

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Fig. 6. Correlation between landscape pattern and habitat quality of the Hehuang Valley

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	景观类型 1	景观类型 2	景观类型 3	流出
景观类型 1		$\frac{C_{12}}{\sum_{i=1}^{3} \sum_{j=3}^{1} C_{ij}}$	$\frac{C_{13}}{\sum_{i=1}^{3} \sum_{j=3}^{1} C_{ij}}$	$\frac{C_{12+13}}{\sum_{i=1}^{3} \sum_{j=3}^{1} C_{ij}}$
景观类型 2	$\frac{C_{21}}{\sum_{i=1}^{3} \sum_{j=3}^{1} C_{ij}}$		$\frac{C_{23}}{\sum_{i=1}^{3} \sum_{j=3}^{1} C_{ij}}$	$\frac{C_{21+23}}{\sum_{i=1}^{3} \sum_{j=3}^{1} C_{ij}}$
景观类型 3	$\frac{C_{31}}{\sum_{i=1}^{3} \sum_{j=3}^{1} C_{ij}}$	$\frac{C_{32}}{\sum_{i=1}^{3} \sum_{j=3}^{1} C_{ij}}$		$\frac{C_{31+32}}{\sum_{i=1}^{3} \sum_{j=3}^{1} C_{ij}}$
流入	$\frac{C_{21+31}}{\sum_{i=1}^{3} \sum_{j=3}^{1} C_{ij}}$	$\frac{C_{12+32}}{\sum_{i=1}^{3} \sum_{j=3}^{1} C_{ij}}$	$\frac{C_{13+23}}{\sum_{i=1}^{3} \sum_{j=3}^{1} C_{ij}}$	$\sum_{i = 1} [(\sum_{j = 1} C_{ij}) - C_{ii}]$

Table 1. Flow transfer matrix

威胁因子	最大影响距离/km	权重	衰退类型
建设用地	8.00	1.00	exponential
国道	6.00	1.00	linear
省道	4.00	0.85	linear
高速公路	2.00	0.80	linear
铁路	2.00	0.80	linear
耕地	4.00	0.70	exponential

Table 2. Threat factors

地类名称	生境适宜度	建设用地	国道	省道	高速公路	铁路	耕地
林地	1.00	0.80	0.80	0.80	0.80	0.75	0.70
草地	1.00	0.75	0.80	0.80	0.80	0.75	0.70
水域	0.80	0.70	0.65	0.65	0.65	0.60	0.65
耕地	0.40	0.40	0.40	0.40	0.40	0.30	0.25
未利用地	0.00	0.00	0.00	0.00	0.00	0.00	0.00

Table 3. Sensitivity of habitat types to each threat factor

1995年景观类型	2015年景观类型
1995年景观类型	草地	耕地	建设用地	林地	水域	未利用地	流出
草地		1.88	0.20	2.78	0.08	0.87	5.82
耕地	2.35		1.65	1.54	0.18	0.10	5.82
建设用地	0.03	0.18		0.02	0.02	0.01	0.26
林地	3.96	0.47	0.21		0.20	0.29	5.13
水域	0.05	0.09	0.02	0.12		0.03	0.31
未利用地	1.36	0.29	0.07	0.48	0.05		2.24
流入	7.75	2.91	2.16	4.94	0.53	1.30	19.58

Table 4. Flow matrix of landscape type transformation, 1995-2015 (%)

年份	景观破碎化指数
年份	NP/个	PD/（个/hm²）	LPI/%	AREA_MN/hm²	DIVISION/%
1995	7137	20.23	10.6298	494.2380	97.25
2005	8058	22.84	10.2255	437.7484	97.58
2015	9597	27.21	10.7360	367.5499	97.59
年份	景观形状指数			景观多样性指数
年份	ED/（m/hm²）	LSI	CONTAG/%	SHDI	SHEI
1995	13.9863	68.0368	58.1295	1.3770	0.7685
2005	14.7630	71.6838	57.8227	1.3828	0.7717
2015	15.5796	75.5180	57.0628	1.4037	0.7834

Table 5. Landscape metrics of the study area

等级	1995年		2005年		2015年
等级	面积/km²	占比/%	面积/km²	占比/%	面积/km²	占比/%
差	2947.66	8.36	2880.00	8.16	3283.34	9.31
中等	4616.17	13.09	4295.91	12.18	4063.58	11.52
良好	3233.35	9.17	3158.92	8.96	2829.07	8.02
优等	24476.59	69.39	24938.93	70.70	25097.78	71.15

Table 6. Classification of habitat quality index values of the study area, 1995-2015

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