Author(s): Na Zhao; Yu Huang; Mengzhen Xu; Yu Huang
Linked Author(s):
Keywords: No keywords
Abstract: The change of land use types and patterns has a significant impact on hydrological processes and river ecosystems. The Yiluo River is an important tributary of the middle reaches of the Yellow River. It is of great importance to study effect of land use on the ecosystem in the Yiluo River Basin. Based on the spatiotemporal images of land use in the Yiluo River Basin in 2020, environmental data and benthic invertebrates were collected from the river sections dominated by forest land, cultivated land and town land from upper reaches to lower reaches of the Yiluo River. A total of 143 species of invertebrates were identified, belonging to 4 phyla, 7 classes, 22 orders and 75 families, including 123 arthropods, 13 mollusks, and 6 annelids. The results showed that: 1) Land use type had an important influence on the diversity of benthic community. The biodiversity in forest land was the highest, followed by that in cultivated land. The biodiversity in town land was the lowest. 2) The total density and biomass of benthic animals was the highest in the cultivated land, followed by that in forest land. The total density and biomass of benthic animals was the lowest in town land. 3) The density and biomass of collector-gatherers and predators were the highest in the cultivated land, followed by the forest land. The density and biomass of collector-gatherers and predators were the lowest in the town land. The results will provide basic support for ecological protection and high-quality development along the Yellow River.
Year: 2022