The stereoscopic spatial connectivity of wetland ecosystems: Evaluation method and regulation measures

作者：Qin Yang, Peng Hu, Jianhua Wang, Qinghui Zeng, Zefan Yang, Huan Liu, Yiyang Dong · 发表于：Hydrological Processes · 年份：2021 · DOI：10.1002/hyp.14074 · 被引用次数：12 · 研究领域：Land Use and Ecosystem Services、Wildlife-Road Interactions and Conservation、Remote Sensing and LiDAR Applications

Abstract Currently, the weakened connectivity of wetland ecosystems is the most important factor leading to the destruction, degradation, and disappearance of wetlands. Studying changes in wetland ecosystems connectivity enables the understanding the hydrological processes in wetland ecosystems and provides significant support for the study of ecological water demand. However, recent research on the connectivity of wetland ecosystems has primarily focused on intuitive Heilongjiang River Basin in China (HRBC) connectivity in terms of hydrology and geomorphology, while the impact of wetland ecosystems on habitats has been ignored. The present study applied an innovative method to evaluate and regulate the stereoscopic spatial connectivity (SSC) of the wetland ecosystems in the HRBC. In this method, the water requirements of typical organisms in the region were considered, and the hydrological trends in the wetland ecosystems along with the status of the SSC were analysed using remote sensing images. A regulation mode for improving the stereoscopic spatial connectivity index (SSCI) was proposed. The results revealed that over the past 35 years, the wetland ecosystems in the study area shrank significantly, with the SSCI decreasing from 41.30% in 1980 to 35.08% in 2015. By comparing the correlations among temperature, precipitation, agricultural land, construction land, and the wetland ecosystems during the same period, it was proven that human activity serves as the major drivin...