摘要
自然保护地生态系统健康监测和评价是提升保护地健康管理的前提。由于传统地面调查手段的局限性,本研究针对内蒙古自治区9个国家级自然保护区草地生态系统,基于活力、组织力和恢复力3个维度,通过选取理想参考系的方法,采用遥感指标构建生态系统健康评价指标体系,并通过Critic权重分析算法,分草地类型计算各评级指标的权重,以实现内蒙古国家级自然保护区草原生态系统健康评价和分级(优秀、良好、中等、不健康),最后比较了保护区内草甸草原、典型草原和草原湿地3种主要草地类型以及保护区在2000—2009年和2010—2019年两个时间段生态系统健康状况的差异。研究表明:(1)内蒙古9个国家级自然保护区草原生态系统全部为健康状态,其中22%为优秀,44%为良好,33%为中等;(2)各保护区不同草地生态系统均处于健康水平,然而部分保护区的草原生态系统在恢复力维度上仍处于较低的中等水平,亟须加强保护区的管理和保护;(3)与2000—2009年相比保护区草地生态系统健康在2010—2019年呈稳中向好的变化趋势。本研究建立的草原生态系统健康评价指标体系和评价结果为保护区健康管理和科学决策提供了重要支撑。
Monitoring and evaluation of ecosystem health in nature reserves is a prerequisite for improving the health management of the reserves.To improve the limitations of traditional field survey means,remote sensing indicators were applied in this research to carry out ecosystem health evaluation of grassland ecosystems in nine national nature reserves located in Inner Mongolia.The ecosystem health evaluation index system was constructed based on the three dimensions of vitality,organization and resilience(VOR)by selecting the ideal reference system.In addition,weights of each indicator in different grassland types were calculated by the Critic weight analysis algorithm,and the grassland ecosystem health evaluation and grading levels(excellent-good-moderate-unhealthy)in Inner Mongolia'National Nature Reserves were distinguished.Finally,differences in ecosystem health among the three main grassland types in the reserves,meadow steppe,typical steppe and wetland steppe,were compared for both 2000-2009 and 2010-2019 time periods.Results showed that:(1)All grassland ecosystems in nine National Nature Reserves in Inner Mongolia were healthy,with 22% as excellent,44% as good,and 33% as medium.(2)Different grassland ecosystems in reserves were all at healthy levels.However,some of the grassland ecosystems in the reserves were still at a moderate level on the dimension of resilience,lower than expected.Thus,enhanced management and protection at the reserve aspect will be required.(3)The ecosystem health of the grassland ecosystems in the reserves was stable and improving in 2010-2019 period compared to 2000-2009.Evaluation indicator system and results in this study can provide important support for health management in reserves and scientific decision-making.
作者
王耀彬
王尧
孙伟成
陈子彦
胡格吉勒
伊如汗
白永飞
杨培志
赵玉金
WANG Yaobin;WANG Yao;SUN Weicheng;CHEN Ziyan;Hugjile;Yiruhan;BAI Yongfei;YANG Peizhi;ZHAO Yujin(College of Grassland Agriculture,Northwest A&F University,Yangling 712100,China;Institute of Botany,Chinses Academy of Science,Beijing 100093,China;Grassland Workstation of Zhenglan Banner,Xilinhot 027200,China;Inner Mongolia Pratacultural Technology Innovation Center Co.Ltd,Hohhot 010050,China)
出处
《中国草地学报》
北大核心
2025年第1期1-12,共12页
Chinese Journal of Grassland
基金
国家草业技术创新中心(筹)重大创新平台建设专项(CCPTZX2023B02-1)
内蒙古自治区科技重大专项(2021ZD0011-04)。
关键词
自然保护区
草原
健康评价
遥感
Nature reserve
Grassland
Health assessment
Remote sensing
