Research on the construction of ecological corridor habitat network in Songhua River

doi:10.12302/j.issn.1000-2006.202302013

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2024, Vol. 48 ›› Issue (4): 261-270.doi: 10.12302/j.issn.1000-2006.202302013

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Research on the construction of ecological corridor habitat network in Songhua River

ZHAO Zhiqiang¹^,²^,³(), FANG Hao⁴, YUAN Qing¹^,²^,^*(), WU Yan⁴^,^*()

1. School of Architecture, Harbin Institute of Technology, Harbin 150006, China
2. Key Laboratory of National Territory Spatial Planning and Ecological Restoration in Cold Regions,Ministry of Natural Resources,Harbin 150006, China
3. Harbin Institute of Urban and Rural Planning and Design, Harbin 150010, China
4. School of Landscape Architecture, Northeast Forestry University, Harbin 150040, China

Received:2023-02-12 Revised:2023-05-12 Online:2024-07-30 Published:2024-08-05
Contact: YUAN Qing, WU Yan E-mail:abc551@126.com;hityuanqing@hit.edu.cn;wuyan@nefu.edu.cn

Abstract

Abstract:

【Objective】The hundred-mile ecological corridor of the Songhua River is a diverse environment with abundant biological resources. Studying the construction and classification of its habitat network is crucial for enhancing regional biodiversity and ecological stability.【Method】Using the Songhua River Ecological Corridor as a case study, we first identified regional habitat types and assessed habitat quality using the InVEST analysis. We then pinpointed habitat sources, habitat corridors, and habitat nodes based on habitat suitability analysis for focal species and circuit theory, forming a comprehensive habitat network. Lastly, we classified the importance levels of sources and corridors based on current density.【Result】(1) The corridor features 23 habitat types; 44.31% of the areas are classified as having high habitat quality. (2) The habitat network consists of 82 sources, 147 corridors and 57 nodes. (3) Analysis of current density revealed seven primary habitat sources covering 484.82 km², primarily in large nature reserves, and 14 first-class habitat corridors totaling 7 560 meters, mainly along the main stream of the Songhua River, though the corridors are relatively short.【Conclusion】The habitat conditions in the Songhua River ecological corridor are generally favorable. However, attention must be given to ecological threats posed by rapid urban development. Effective strategies include classifying and expanding habitat sources, managing and enhancing corridor connectivity, and restoring and adding habitat nodes. These measures will optimize the habitat network and facilitate biological migration, providing essential “Stepping stones.”

Key words: habitat network, habitat quality, focal species, circuit theory, Songhua River basin

CLC Number:

TU985
S731

ZHAO Zhiqiang, FANG Hao, YUAN Qing, WU Yan. Research on the construction of ecological corridor habitat network in Songhua River[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2024, 48(4): 261-270.

Figures/Tables 7

Table 1

Table 2

Table 3

Habitat suitability evaluation system of focal species in Songhua River"

物种 species	影响因素类型 types of influencing factors		分级/分类 grading/classification	分值 score	权重 weight
苍鹭(heron) Ardea cinerea	自然因素 natural factor	生境类型 habitat type	湖泊、水库、森林沼泽、灌丛沼泽、草本沼泽、滩涂、乔木林地	9	0.53
			河流、坑塘、沟渠、灌木林地、其他林地、其他草地、水田	7
			天然牧草地、公园与绿地、园地	5
			旱地、交通道路用地、裸土地	3
			住宅用地、工矿用地、其他建设用地	1
		海拔/m altitude	<100	9
			[100,200)	5	0.05
			[200,270)	1
		至水源距离/m distance to water	[0,200)	9
			[200,500)	5	0.24
			>500	1
	人为干扰因素 human interference factor	至城乡建设用地距离/m distance to urban and rural construction land	≥2 000	9
			[1 000,2 000)	5	0.07
			[0,1 000)	1
		至主要交通干道距离/m distance to main road	≥500	9
			[100,500)	5	0.11
			[0,100)	1
绿头鸭(mallard dark) Anas platyrhynchos	自然因素 natural factor	生境类型 habitat type	河流、湖泊、水库、坑塘、森林沼泽、灌丛沼泽、草本沼泽、水田	9	0.55
			沟渠、滩涂	7
			乔木林地、灌木林地、其他林地、天然牧草地、其他草地、公园与绿地、旱地、园地	5
			交通道路用地、裸土地	3
			住宅用地、工矿用地、其他建设用地	1
		至水源距离/m distance to water	[0,50)	9
			[50,100)	5	0.27
			≥100	1
	人为干扰因素	至城乡建设用地距离/m distance to urban and rural construction land	≥1 000	9
			[400,1 000)	5	0.12
			[0,400)	1
		至主要交通干道距离/m distance to main road	≥150	9
			[60,150)	5	0.06
			[0,60)	1
环颈雉 (ring-neeked pheasant) Phasianus colchicus	自然因素 natural factor	生境类型 habitat type	草本沼泽、乔木林地、灌木林地、天然牧草地、其他草地、旱地	9	0.45
			灌丛沼泽、其他林地、园地	7
			坑塘、沟渠、森林沼泽、滩涂、公园与绿地、水田	5
			住宅用地、交通道路用地、裸地	3
			河流、湖泊、水库、工矿用地、其他建设用地	1
		至水源距离/m distance to water	[0,100)	9
			[100,300)	5	0.08
			≥300	1
		至林地距离/m distance to forest	[0,300)	9
			[300,500)	5	0.29
			≥500	1
	人为干扰因素 human interference factor	至城乡建设用地距离/m distance to urban and rural construction land	≥1 500	9
			[300,1 500)	5	0.05
			[0,300)	1
		至主要交通干道距离/m distance to main road	≥500	9
			[300,500)	5	0.13
			[0,300)	1

Table 3

Fig. 1

Fig. 2

Fig. 3

Fig. 4

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威胁源 threat sources	权重 weight	最大影响距离/km maximum distance	衰退类型 type of decay
农田farmland	0.2	5	线性
住宅用地residential land	0.8	10	指数性
工矿用地industrial and mining land	1.0	12	指数性
其他建设用地other construction land	0.8	10	指数性
交通道路用地traffic roads land	0.6	3	线性
裸地bare land	0.4	6	线性

生境类型 habitat type	生境适宜度 habitat suitability	相对敏感度relative sensitivity
生境类型 habitat type	生境适宜度 habitat suitability	农田 farmland	住宅用地 residential land	工矿用地 industrial and mining land	其他建设用地 other construction land	交通道路用地 traffic roads land	裸地 bare land
水田paddy field	0.75	0.30	0.40	0.40	0.40	0.30	0.40
旱地dry land	0.60	0.30	0.40	0.40	0.40	0.20	0.40
乔木林地arbor land	0.90	0.80	0.80	0.40	0.80	0.60	0.50
灌木林地shrub land	0.90	0.50	0.90	0.80	0.80	0.70	0.55
园地garden plot	0.50	0.30	0.40	0.40	0.40	0.20	0.40
其他林地other forest land	0.75	0.80	0.80	0.60	0.60	0.70	0.50
天然牧草地natural grassland	0.80	0.50	0.60	0.50	0.50	0.40	0.40
其他草地other grassland	0.70	0.45	0.45	0.40	0.50	0.40	0.40
河流river	0.95	0.70	0.80	0.90	0.80	0.50	0.40
湖泊lake	0.95	0.70	0.90	0.90	0.80	0.50	0.40
水库reservoir	0.90	0.65	0.90	0.90	0.85	0.50	0.40
坑塘pit pond	0.90	0.65	0.85	0.85	0.85	0.50	0.40
沟渠ditch	0.70	0.75	0.85	0.90	0.80	0.60	0.40
森林沼泽forest swamp	0.95	0.80	0.70	0.70	0.50	0.50	0.50
灌丛沼泽scrub swamp	0.90	0.80	0.70	0.85	0.60	0.70	0.50
草本沼泽herbaceous swamp	0.95	0.80	0.70	0.85	0.60	0.50	0.50
滩涂tidal flat	0.7	0.85	0.75	0.90	0.70	0.50	0.40
住宅用地residential land	0	0	0	0	0	0	0
工矿用地industrial and mining land	0	0	0	0	0	0	0
交通道路用地traffic roads land	0.15	0	0	0	0	0	0
公园与绿地park and green space	0.60	0.30	0.30	0.40	0.20	0.20	0.20
其他建设用地other construction land	0	0	0	0	0	0	0
裸地bare land	0.30	0.10	0.30	0.30	0.30	0.20	0.20

Research on the construction of ecological corridor habitat network in Songhua River

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