Monitoring and Evaluating Carbon Sink Capacity for Comprehensive Management of Soil and Water Conservation in Small Watersheds
Journal Title: Bulletin of Soil and Water Conservation - Year 2023, Vol 43, Issue 5
Abstract
[Objective] The carbon sinks of soil and vegetation were monitored and evaluated in order to provide technology and methodology for implementing dynamic monitoring and evaluation of carbon sinks for soil and water conservation projects, and to provide theoretical and methodological support for soil and water conservation projects to participate in carbon emissions trading, and to research and formulate relevant rules. [Methods] The carbon storage capacity of the vegetation carbon pool and soil carbon pool in Luodihe small watershed at Changting County, Fujian Province during 2001—2022 was calculated through field sampling analysis and LiDAR collection of relevant parameters. Carbon sink capacity of various soil and water conservation management measures in the small watershed was evaluated. [Results] ① After 21 years of comprehensive management, various soil and water conservation measures in the study area have significantly improved the role and capacity of carbon sinks. The carbon storage of the small watershed increased by 3.97×104 t, with an average annual increase of 1.89×103 t/yr. ② The carbon storage of soil and vegetation carbon pools increased by 73.73% and 346.41%, respectively, during 2001—2022. The carbon sink of the small watershed reached 3.05×104 t, of which 1.66×104 t was attributed to the soil carbon sink and 1.39×104 t was attributed to the vegetation carbon sink. ③ There were differences in the ability of various measures to increase the carbon sinks. Chestnut forest land and fertilized Pinus massoniana forest land increased carbon sink the most obviously, followed by coniferous and broad-leaved mixed forest, nursery and managed P. massoniana, horizontal grade land preparation of P. massoniana forest, and finally close management and bayberry forest land. [Conclusion] Various soil and water conservation measures had obvious effects on carbon retention, carbon sequestration, and carbon sink increase. The carbon sink capacity of forest land such as chestnut forest and fertilized P. massoniana forest land with land preparation, afforestation, and fertilization and breeding measures was even more significant. These practices provide an effective means for improving the efficiency of soil and water retention and for increasing carbon sink.
Authors and Affiliations
Xiaojian Zhong, Hui Cheng, Zhiguang Li, Juan Wu, Shunfa Lu, Dengqiu Li, Jinsheng Xie
Keywords
Related Articles
- EP ID EP762716
- DOI 10.13961/j.cnki.stbctb.20231011.001
- Views 17
- Downloads 0
County Scale Ecological Security Pattern Construction Based on MCR Model
[Objective] An ecological security pattern with regional characteristics was constructed in order to provide a scientific reference for the protection of the ecological environment and the construction and zoning managem...
Analysis of Driving Factors and Predictions of Arable Land Area Based on PLUS Model
[Objective] The spatial and temporal evolutionary characteristics of arable land in the Tumen River basin and the driving factors for changes in arable land area were explored, and changes in arable land area associated...
Spatial-temporal Dynamic Change Law of Groundwater Level in Shanshan County of Xinjiang Uygur Autonomous Region from 2011 to 2020
[Objective] The spatial and temporal dynamic law and future change trend of groundwater level in Shanshan County of Xinjiang Uygur Autonomous Region during 2011—2020 were studied in order to provide scientific support fo...
Soil Water Characteristics of Different Aerial-seeded Plant Communities at Northeastern Edge of Tengger Desert
[Objective] Soil water characteristics of different plant communities at different slope positions on aerial-seeded afforestation areas in 1992 were studied at the northeastern edge of the Tengger Desert in order to prov...
County Scale Ecological Environmental Monitoring and Evaluation Based on Spatial Information Technology
[Objective] An accurate acquisition method for ecological environmental monitoring data was studied to construct an evaluation index system of ecological environmental quality in order to provide a basis for precise prot...