Temporal and spatial variation of the distributive patterns and driving force analysis in the Yangtze River and Yellow River source regions wetland

Abstract

The Yangtze River and Yellow River source regions are part of the highest and largest distribution area of wetlands in the world and play a key role in sustaining the ecosystem balance in this region. Current global changes, such as climate change and human activity, are significantly affecting the landscape pattern of these wetlands. These changes have had a major effect on the water cycle and ecosystem balance in this region and have attracted widespread attention. In order to clarify the characteristics of these changes, this research examines the temporal and spatial variation of the distributive patterns of the alpine wetlands in the Yangtze River and Yellow River source regions. The analysis was conducted by using

Identification of Important Wetlands and Optimization of Landscape Patterns Based on Human Pressure Index: The Case of the Linghekou Wetland in China

“…(2) The manner in which land is used can have an impact on the ecosystem and the quality of habitats for different species. The extent to which land use affects ecosystem processes and habitat quality varies depending on the specific land use in question [9,[47][48][49]. In this paper, the study area mainly contains several types of land use such as paddy fields, dry land, farmed lake, beach, reed swamp, and woodland, among which beach, woodland, and reed swamp include both natural and human modification and protection, but generally do not involve too much human behavior of building settlements, growing food, and producing other economic products through land modification, i.e., they are assigned a value of 0.…”

A study of the effects of climate change and human activities on NPP of marsh wetland vegetation in the Yellow River source region between 2000 and 2020

“…Since 1950, the Qinghai-Tibet Plateau has experienced significantly warming, which has led to the accelerated degradation of permafrost, reduced solid water reserves, and increased precipitation (Zhao et al, 2020;Zhang Q. et al, 2022), which makes the stability of the marsh wetland ecosystem in the YRSR worse; simultaneously, human activities, such as overgrazing, expansion of construction land, and peat mining have intensified (Liu et al, 2019;Pan et al, 2020); the marsh wetland in the YRSR have been degraded to varying degrees, with serious landscape fragmentation and decreased species diversity, posing a serious threat to the aquatic ecological function, frozen soil, and ecological environment in this area (Xiang et al, 2009;Li et al, 2018). With the strengthening of ecological environment protection and the regulation of relevant policies, the Chinese government has implemented a series of ecological protection and restoration projects since 2000, including turning grazing land back to green and establishing the Sanjiangyuan National Ecological Protection Area, especially the construction of the Yellow River Source National Park, which has improved the ecological environment in the YRSR (Du et al, 2015;Shao et al, 2017;Ma et al, 2022). However, the exact mechanism of the change in marsh wetland in the YRSR is still unknown because of the mutual interference and interaction between climate change and human activities.…”