Abstract:
This paper is the result of geological survey engineering.
Objective Changdu City serves as a critical ecological corridor on the eastern Qinghai−Tibet Plateau. The ecosystem service evaluation methodology recommended by the existing "dual evaluation" guidelines fails to adequately capture the unique characteristics of the ecosystem within the study area. This paper enhances the assessment methodology regarding the significance of ecological protection, thereby improving the feasibility of integrating the research findings into practical ecological conservation efforts. The evaluation outcomes will provide a foundational basis for establishing ecological protection boundaries and inform subsequent ecological restoration initiatives.
Methods In light of the distinctive characteristics of the plateau environment, the evaluation system incorporates carbon sequestration and freeze−thaw erosion processes. Utilizing enhanced methodologies for assessing ecosystem services and ecological sensitivity, this study evaluates the significance of ecological protection in Changdu City.
Results The highly significant ecological protection zone in Changdu City encompasses 51.35% of the total land area and is primarily categorized into two distinct types. The first category consists of regions exhibiting favorable ecological conditions that play crucial roles in water and soil conservation; these areas are predominantly located in the mountainous regions along the Jinsha River, Lancang River, and Nujiang River. The second category comprises areas experiencing vegetation degradation, land desertification, soil and water erosion, and other environmental challenges, which are mainly found in the northern part of Dingqing County, as well as the central and southern regions of Basu County and the western section of Bianba County.
Conclusions The majority of regions within Changdu City are situated in areas designated as critically important and significant for ecological protection, exhibiting robust ecosystem service functions. However, certain areas also demonstrate heightened sensitivity to ecological disturbances. Consequently, it is imperative to devise and rigorously implement tailored ecological protection measures that correspond to the specific characteristics of each area during the development process. This approach aims to mitigate the adverse impacts of various anthropogenic activities on the ecosystem in the context of climate change, thereby ensuring the integrity of the ecological barrier of the Qinghai−Tibet Plateau.
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