内蒙古黄河流域生态保护恢复优先区识别

doi:10.13866/j.azr.2024.11.14

Abstract

Abstract:

Finding ways to scientifically identify the priority areas of ecological protection and restoration and implement adapted strategies in different regions is a challenge faced by current ecological protection and restoration work. This study was based on the Yellow River Basin in Inner Mongolia, and the ecological security evaluation was conducted using spatial principal component analysis (SPCA) and morphological spatial pattern analysis (MSPA). The ecological protection and restoration areas were identified by combining the matching degree of landscape elements. The results indicated that (1) the study area was dominated by areas with moderate ecological security, accounting for 40.58% of the total area. (2) 14 ecological sources (accounting for 20.92% of the study area), 42 ecological corridors, and 78 ecological nodes were identified by MSPA and minimum cumulative resistance model (MCR). (3) among the 62 sub-watersheds in the study area, 8 had a high matching level of landscape elements, accounting for 23.34% of the total area, and 38 watersheds had a low matching level, accounting for 43.20% of the total area. and (4) the priority areas of the third- and first-level ecological restoration accounted for 35.53% (the largest) and 18.63%, respectively. Based on the identification results of priority areas of ecological protection and restoration, the restoration strategies of different regions were discussed. Our results can provide a basis for ecological protection and high-quality development of the Yellow River Basin in Inner Mongolia.

Key words: priority areas for ecological protection and restoration, ecological security, landscape pattern, the Yellow River Basin in Inner Mongolia

LU Ying, ZHANG Min, WANG Yange. Identification of priority areas for the ecological protection and restoration of the Yellow River Basin in Inner Mongolia[J].Arid Zone Research, 2024, 41(11): 1946-1955.

Figures/Tables 11

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数据名称	格式	空间分辨率	来源
数字高程模型（DEM）	栅格数据	30 m	地理空间数据云（http://www.gscloud.cn/）
归一化植被指数（NDVI）	栅格数据	30 m	数字地球开放平台（https://open.geovisearth.com/）
土壤类型	栅格数据	1000 m	国家冰川冻土沙漠科学数据中心（http://www.ncdc.ac.cn）
土地利用	栅格数据	30 m	中国科学院资源环境科学数据中心（http://www.resdc.cn）
道路数据	矢量数据	-	OSM官网（https://download.geofabrik.de/）
夜间灯光	栅格数据	1000 m	Harvard Dataverse平台

生态安全水平等级	景观要素匹配等级
生态安全水平等级	高	中	低
高	-	-	三级恢复区
中	-	-	三级恢复区
低	一级恢复区	一级恢复区	二级恢复区

评价维度	评价指标	生态安全等级分级标准
评价维度	评价指标	一	二	三	四	五
自然因素	海拔/m	1730~3304	1482~1730	1309~1482	1139~1309	813~1139
	坡度/（°）	>25	15~25	8~15	3~8	0~3
	土壤类型	0~0.50	0.50~0.87	0.87~1.81	1.81~7.75	>7.75
	NDVI/%	-20~-2	-2~15	15~23	23~33	33~78
	距水体距离/km	>21	12~21	7~12	3~7	0~3
人类社会因素	距城镇用地距离/km	0~20	20~42	42~104	104~175	175~220
	距居民点距离/km	0~8	8~47	47~92	92~121	121~153
	距工业用地距离/km	0~6	6~13	13~23	23~35	35~73
	距道路距离/km	0~0.02	0.02~0.05	0.05~0.10	0.10~0.16	0.16~0.33
	夜间灯光指数	40.76~63.00	21.99~40.76	9.88~21.99	0~9.88	0
景观格局因素	香农均匀度指数（SHEI）/%	0~18.43	18.43~38.82	38.82~57.64	57.64~78.43	78.43~99.99
景观格局因素	蔓延度指数（CONTAG）/%	0~18.52	18.52~39.63	39.63~57.41	57.41~75.57	75.57~94.46

主成分	特征值	方差贡献率/%	累积贡献率/%
一	0.0529	43.47	43.47
二	0.0200	16.44	59.92
三	0.0130	10.65	70.57
四	0.0099	8.15	78.72
五	0.0070	5.73	84.45
六	0.0041	3.38	87.82
七	0.0040	3.29	91.12
八	0.0032	2.64	93.76
九	0.0028	2.33	96.09
十	0.0023	1.92	98.01
十一	0.0014	1.17	99.17
十二	0.0010	0.83	100.00

Identification of priority areas for the ecological protection and restoration of the Yellow River Basin in Inner Mongolia

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