摘要: |
长江经济带生态系统的健康是支撑我国经济社会可持续发展的重要基础。本研究基于“活力-组织力-恢复力-贡献力”评价指标体系,构建长江经济带生态系统健康评估模型,对2000年和2015年各县市的生态系统健康状况进行评估,其结果表明:①长江经济带生态系统健康空间分异格局总体呈现北部高南部低、上游高下游低的特点,生态系统健康指数的高值区主要位于云南省,低值区主要位于安徽省和江苏省;②与2000年相比,2015年生态系统健康指数整体增加,局部降低,其中,生态系统健康指数下降的区域主要位于长三角沿海地区;③在2015年长江经济带生态系统健康以四因子主导为主,四因子主导区占研究区县市总数的41.2%,且大部分四因子主导区是由原组织力-恢复力-贡献力主导区转化而来。总体而言,研究时段内长江经济带生态系统健康状况有所恢复,但在人类扰动较大的地区有所下降。 |
关键词: 生态系统健康 空间格局 动态变化 长江经济带 |
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基金项目:国家重点研发计划项目课题(2016YFC0400901,2017YFC1502404);国家自然科学(41890821,51709008); 中央级公益性科研院所基本科研业务费项目(CKSF2019478/SZ) |
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Ecosystem health assessment and its spatial and temporal change characteristics of the Yangtze River Economic Belt |
YU Zhiqiang1, CAO Hao1, WANG Zhengyong2
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1.Changjiang River Scientific Research Institute,Changjiang Water Resources Commission of the Ministry of Water Resources of China;2.Xiangyang Hydrological and Water Resources Survey Bureau
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Abstract: |
The health of ecosystem in the Yangtze River Economic Belt (YREB) is an important key factor to the sustainable development of China's economy and society. Based on the framework of Vigor-Organization- Resilience Contribution, an ecosystem health assessment model was built for the YREB, and the ecosystem health for each county in 2000 and 2015 was analyzed. The result showed that: (1) the ecosystem health was higher in the upstream and south of the Yangtze River (e.g.Yunnan province), while lower in downstream and north of the Yangtze River (e.g. Anhui province and Jiangsu province); (2) An overall increase of ecosystem health index was detected from 2000 to 2015. However, in the local area, especially coast regions of Yangtze River Delta Area, the ecosystem health index was decreased; (3) In 2015, the ecosystem health of the Yangtze River Economic Belt was dominated by four factors, the four-factor dominant area accounted for 41.2% of the total area, and most of them were transformed from the primary three-factor dominant area in 2000. In general, the ecosystem health of the YREB recovered during the study period, but declined in the areas with intensified human activities. |
Key words: Ecosystem health Spatial pattern Dynamic change Yangtze River Economic Belt |