Soil and Water Conservation and Ecological Benefits of Forest Ecosystem in New Urban Karst Areas of Central Guizhou Province

Li Yiqiu; Deng Ou; Li Ruoshuang; Wu Yalin; Jin Yu; Dai Zhengjiao; Xiao Li

doi:10.13961/j.cnki.stbctb.2022.04.031

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Soil and Water Conservation and Ecological Benefits of Forest Ecosystem in New Urban Karst Areas of Central Guizhou Province

- Soil and Water Conservation and Ecological Benefits of Forest Ecosystem in New Urban Karst Areas of Central Guizhou Province
- Bulletin of Soiland Water Conservation Vol. 42, Issue 4, Pages: 244-250(2022)
- 作者机构：
  
  1. 贵州师范大学地理与环境科学学院,贵州,贵阳,550025
  2. 贵州山地资源与环境遥感重点实验室,贵州,贵阳,550025
  3. 中国地质大学地球科学与资源学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2022.04.031
  CLC： S157.1
- Published：2022
- 稿件说明：
移动端阅览
Li Yiqiu, Deng Ou, Li Ruoshuang, et al. Soil and Water Conservation and Ecological Benefits of Forest Ecosystem in New Urban Karst Areas of Central Guizhou Province[J]. Bulletin of Soiland Water Conservation, 2022, 42(4): 244-250.
DOI：

Li Yiqiu, Deng Ou, Li Ruoshuang, et al. Soil and Water Conservation and Ecological Benefits of Forest Ecosystem in New Urban Karst Areas of Central Guizhou Province[J]. Bulletin of Soiland Water Conservation, 2022, 42(4): 244-250. DOI： 10.13961/j.cnki.stbctb.2022.04.031.

摘要

[目的

]

研究黔中喀斯特城市新区——贵州省贵阳市观山湖区森林生态系统的水土保持及其生态效益，旨在科学评价该区生态建设成效

为喀斯特城市新区资源环境可持续利用，森林高质量发展提供科学依据。[方法

]

基于多源遥感数据提取2000，2010和2020年观山湖区森林生态系统分布格局，利用土壤保持模型和水量平衡方程计算土壤保持量和调节水量，采用市场价值法和影子工程法计算其生态效益价值量。[结果

]

①观山湖区森林生态系统面积2000—2010年从10 892.74 hm

增加到15 571.90 hm

。随着城市扩张的加快，森林面积持续减小，到2020年减少为13 937.54 hm

。由于生态工程和城市扩张的双向长消作用，森林生态系统在过去20 a中的变化幅度很大。②森林生态系统的固土保肥和水量调节价值量总体上呈增长趋势，单位面积生态效益有所提高，但因森林生态系统面积减少，固土保肥和水量调节生态效益增势趋缓。③单位面积土壤保持量大小顺序表现为：针叶林>针阔混交林>灌木林>阔叶林>其他林；调节水量大小顺序表现为：针叶林>阔叶林>针阔混交林>灌木林>其他林；针叶林固土保肥、水量调节生态效益价值总量最大，灌木林次之。灌木林发挥着十分重要的固土保肥和水量调节生态效益。[结论

]

观山湖区森林生态系统面积变化幅度大，2000—2010年面积大幅增长，近年来呈现减少趋势，但单位面积生态效益不断提高，在固土保肥和水量调节方面发挥着重要作用。在城市新区开发中，需要十分重视森林生态系统的保护。

Abstract

[Objective] Soil and water conservation and ecological benefits of forest ecosystem in the new urban karst areas of Guanshanhu District

Guiyang City in Central Guizhou Province were studied to scientifically evaluate the achievements of ecological construction

and to provide a scientific reference for the sustainable utilization of resources and the environment

and high-quality development of forests in new urban karst areas.[Methods] The distribution patterns of forest ecosystems at Guanshanhu District at 2000

2010

and 2020 were extracted by using multi-source remote sensing data. The soil conservation and regulating water amount were calculated by a soil conservation model and the water balance equation. The ecological benefit value was calculated using the market value method and the shadow engineering method.[Results] ① The area of the forest ecosystem at Guanshanhu District increased from 10 892.74 hm2 to 15 571.90 hm2 during 2000-2010. Forest area decreased with the acceleration of urban expansion

and was 13 937.54 hm2 by 2020. Due to the opposing influences of ecological engineering and urban expansion

the forest ecosystem has changed greatly during the past 20 years. ② The value of soil and fertilizer conservation and water regulation in the forest ecosystem generally showed an increasing trend

and the ecological benefits per unit area increased. However

due to the decrease in forest ecosystem area

the ecological benefits of soil and fertilizer conservation and water regulation increased slowly. ③ Soil conservation per unit area followed the order of coniferous forest>mixed coniferous and broad-leaved forest>shrub forest>broad-leaved forest>other forest. The regulated water amount followed the order of coniferous forest>broad-leaved forest>mixed coniferous and broad-leaved forest>shrub forest>other forest. The total value of the ecological benefits of soil fertility and water regulation in coniferous forest was the largest

followed by shrub forest. Shrub forest played a very important role in soil fertility and water regulation.[Conclusion] The forest ecosystem changed greatly at Guanshanhu District

and the area increased significantly from 2000 to 2010

but exhibited a decreasing trend in recent years. However

the per unit area ecological benefits increased continuously

and played an important role in soil and fertilizer conservation and water regulation. Forest ecosystem protection should be given great importance in the development of new urban areas.

关键词

Keywords

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