贵州省退耕还林(草)时空格局及其固碳效应

邰良; 陈佳; 龙文涛; 蔡华银; 王欣星

doi:10.13870/j.cnki.stbcxb.2024.06.032

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贵州省退耕还林(草)时空格局及其固碳效应

更新时间：2025-02-18

- 贵州省退耕还林(草)时空格局及其固碳效应
- Spatial-temporal Pattern of the “Grain-for-Green Project” and Its Carbon Sequestration Effect in Guizhou Province
- 水土保持学报 2024年38卷第6期页码：170-177
- 作者机构：
  
  贵州大学农学院,贵阳,550025
- 作者简介：
  
  [ "邰良(1999—),男,在读硕士研究生,主要从事土地利用变化及其固碳效应研究。E-mail:gztailiang@outlook.com" ]
- 基金信息：
  
  国家自然科学基金项目(42367047);贵州大学博士基金项目(2021042)
- DOI：10.13870/j.cnki.stbcxb.2024.06.032
  中图分类号： X171.1
- 纸质出版：2024
- 稿件说明：
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邰良, 陈佳, 龙文涛, 等. 贵州省退耕还林(草)时空格局及其固碳效应[J]. 水土保持学报, 2024,38(6):170-177.

TAI Liang, CHEN Jia, LONG Wentao, et al. Spatial-temporal Pattern of the “Grain-for-Green Project” and Its Carbon Sequestration Effect in Guizhou Province[J]. 2024, 38(6): 170-177.
邰良, 陈佳, 龙文涛, 等. 贵州省退耕还林(草)时空格局及其固碳效应[J]. 水土保持学报, 2024,38(6):170-177. DOI： 10.13870/j.cnki.stbcxb.2024.06.032.

TAI Liang, CHEN Jia, LONG Wentao, et al. Spatial-temporal Pattern of the “Grain-for-Green Project” and Its Carbon Sequestration Effect in Guizhou Province[J]. 2024, 38(6): 170-177. DOI： 10.13870/j.cnki.stbcxb.2024.06.032.

摘要

[目的] 为探究退耕还林(草)工程对贵州省陆地生态系统碳储量的影响。[方法] 以贵州省为例

利用ArcGIS与InVEST模型相结合

研究2000—2020年贵州省退耕还林(草)时空分布格局及碳储量变化。[结果] (1)2000—2020年贵州省土地利用变化显著

综合动态度呈先下降后上升的趋势

依次为0.32%

0.11%

0.09%

0.35%。耕地、林地和草地之间相互转换

建设用地与水域主要来源于耕地。(2)2000—2020年退耕还林(草)总面积为238.17万hm2

土地利用转型主要以耕地转向林地为主

占总退耕还林(草)总面积的84.86%

主要分布在遵义市、毕节市和黔西南州等地。(3)2000—2020年退耕还林(草)区的碳储量共增加257.40×106 t

呈逐渐增长的趋势。耕地转向林地的固碳量最大

达239.89×106 t(93.2%)

土壤碳库为主要贡献者

碳储量为178.15×106 t(69.21%)。[结论] 实施退耕还林(草)工程有助于提高区域生态系统碳储量

耕地转向林地的固碳能力最大

耕地转向草地的固碳能力较小

在未来实施退耕还林(草)工程可优先考虑耕地退耕成林地

有助于提高区域碳储量。

Abstract

[Objective] To analyze the impacts of the "Grain-for-Green Project" on the ecosystem carbon stocks in Guizhou Province. [Methods] Taking Guizhou Province as an example

the spatial and temporal distribution pattern and carbon stock changes of the "Grain-for-Green Project" in Guizhou Province from 2000 to 2020 were investigated by using ArcGIS in combination with the InVEST model. [Results] (1) During the 20-year period

land use in Guizhou Province had changed significantly

and the comprehensive dynamic had shown a downward and then an upward trend

which was 0.32%

0.11%

0.09%

0.35% in order. There was an interconversion among cropland

woodland and grassland

with built-up land and waters mainly derived from cropland. (2) The total area of the "Grain-for-Green Project" from 2000 to 2020 was 2 381 700 hm2

of which the land use transformation was mainly dominated by the conversion of cropland to forest land

which accounted for 84.86% of the total area of the "Grain-for-Green Project"

and mainly in Zunyi

Bijie and Qianxinan Prefecture

etc. (3) A total of 257.40×106 t carbon stock was added to the "Grain-for-Green Project" area from 2000 to 2020

showing a trend of gradual growth. Cropland shifted to forest land sequestered the largest amount of carbon

amounting to 239.89×106 t (93.2%)

and the soil carbon pool was the main contributor

with a carbon stock of 178.15×106 t (69.21%). [Conclusion] The implementation of the "Grain-for-Green Project" helps to increase the regional ecosystem carbon stock. The carbon sequestration capacity of conversion of cropland to forest land is the largest

and the carbon sequestration capacity of conversion of cropland to grassland is smaller. The implementation of the "Grain-for-Green Project" in the future can prioritize the conversion of cropland to forest land

in order to increase the regional carbon stock.

关键词

Keywords

references

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