Changes in Ecosystem Carbon Stock Caused by Land Cover Conversion in Liping County of Guizhoui Province

Li Yiping; Cai Hong; Tian Pengju; Zhang Beibei; Liao Shubing

doi:10.13961/j.cnki.stbctb.2020.02.013

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Changes in Ecosystem Carbon Stock Caused by Land Cover Conversion in Liping County of Guizhoui Province

- Changes in Ecosystem Carbon Stock Caused by Land Cover Conversion in Liping County of Guizhoui Province
- Bulletin of Soiland Water Conservation Vol. 40, Issue 2, Pages: 92-99(2020)
- 作者机构：
  
  1. 贵州大学矿业学院,贵州,贵阳,550025
  2. 贵州省生态气象和遥感中心,贵州,贵阳,550002
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2020.02.013
  CLC： F301.2
- Published：2020
- 稿件说明：
移动端阅览
Li Yiping, Cai Hong, Tian Pengju, et al. Changes in Ecosystem Carbon Stock Caused by Land Cover Conversion in Liping County of Guizhoui Province[J]. Bulletin of Soiland Water Conservation, 2020, 40(2): 92-99.
DOI：

Li Yiping, Cai Hong, Tian Pengju, et al. Changes in Ecosystem Carbon Stock Caused by Land Cover Conversion in Liping County of Guizhoui Province[J]. Bulletin of Soiland Water Conservation, 2020, 40(2): 92-99. DOI： 10.13961/j.cnki.stbctb.2020.02.013.

摘要

[目的

]

对贵州省黎平县地表覆被变化引起的生态系统碳储量变化进行评估，为区域碳源和碳汇管理及"大生态"发展目标提供科学依据。[方法

]

基于黎平县2005，2010和2015年3期土地利用数据，结合CA-Markov模型和InVEST模型碳储量模块，在对土地利用变化趋势进行分析的基础上定量评估了研究区2005-2025年生态系统固碳能力。[结果

]

①2005-2015年，黎平县耕地、林地、未利用地呈减少趋势，草地、建设用地、水域呈增加趋势。②2015-2025年土地利用整体变化趋势与2005-2015年一致但幅度增大。耕地由2005-2015年的降幅2.37%到2015-2025年的增幅4.21%，整体趋势发生转变；③2015年黎平县生态系统总碳储量和平均碳密度分别为9.12×10

t和206.61 t/hm

。自2005年以来分别下降2.00×10

t和0.45 t/hm

。2025年黎平县碳储量和平均碳密度分别为8.98×10

t和203.44 t/hm

。[结论

]

黎平县生态系统固碳能力呈减弱趋势，林地的大面积转出和建设用地的扩张是碳储量下降的直接原因，未来应加强对土地利用结构的优化。

Abstract

[Objective] The change of ecosystem carbon stock caused by the change of surface cover in Liping County

Guizhou Province was evaluated

in order to provide scientific basis for the management of regional carbon source and sink

and the development goal of "large ecology".[Methods] Based on the land use data of 2005

2010 and 2015

the carbon sequestration capacity of the ecosystem of Liping County from 2005 to 2025 was quantitatively evaluated by combined the CA-Markov model with the InVEST carbon storage module.[Results] ① From 2005 to 2015

the cultivated land

forest land and unused land in Liping County decreased

while the grassland

construction land and water area increased generally. ② And the overall variation of land use change in 2015-2025 was consistent with that in 2005-2015. The cultivated land decreased from 2.37% in 2005-2015 to 4.21% in 2015-2025. ③ The total carbon stock and average carbon density of Liping County ecosystem were 9.12×107 t and 206.61 t/hm2

respectively in 2015

which has decreased by 2.00×105 t and 0.45 t/hm2 since 2005. In 2025

the carbon storage and average carbon density of Liping County was predicted to be 8.98×107 t and 203.44 t/hm2

respectively.[Conclusion] The carbon sequestration capacity of the ecological system in Liping County is weakening. The transfer of forest in large scale and the expansion of construction land are the direct reasons for the decline of carbon storage. In the future

the optimization of land use structure should be strengthened.

关键词

Keywords

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