建立基于干扰-抵抗-响应过程的耕地生态稳定性评估方法,并对耕地生态类型进行分类
Haoran Gao1, Jian Gong1, Teng Ye1
1School of Public Administration, China University of Geosciences, Wuhan 430074, China; Key Laboratory of the Ministry of Natural Resources for Legal Research, Wuhan 430074, China.
The Science of the total environment
|April 27, 2024
概括
耕地生态系统稳定性 (CES) 受干扰,抵抗和反应的影响. 土壤生物多样性与CES有积极的相关性,表明适合扩张的地区和需要生态保护的地区.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 农业科学 农业科学
背景情况:
- 耕地生态系统稳定性 (CES) 对农业生产和生态完整性至关重要,特别是在脆弱的地区.
- 了解干扰,抵抗和响应的相互作用是评估和管理CES的关键.
- 遥感 (RS) 和土壤采样提供了评估CES动态的综合方法.
研究的目的:
- 建立一个框架,用RS数据评估CES的空间和时间动态.
- 通过将RS评估与土壤田地样本相结合,对耕地生态类型 (CET) 进行分类.
- 在青海-西藏高原确定需要优先生态保护的耕地.
主要方法:
- 开发了一个基于生态系统干扰-抵抗-响应过程的CES评估框架,使用RS数据.
- 综合RS衍生CES评估与土壤田间样本用于CET分类.
- 分析了地形,降水,斜率和热水条件对CES组件的影响.
- 与CES相关的土壤α生物多样性指标.
主要成果:
- CES 展现出复杂的空间和时间变化,受到干扰,阻力和响应系统的相互作用的影响.
- 地形和降水对干扰系统产生积极影响;坡度对阻力系统产生负面影响.
- 水热条件对阻力系统有积极的影响,而响应系统显示环境因素影响的强度较低.
- 土壤α生物多样性指标与CES有显著和积极的相关性,特别是在研究期末.
结论:
- 研究区域的东部和北部地区显示出更高的CES和土壤生物多样性,适合耕地扩张.
- 黄水源和北部山区需要加强生态系统维护,以应对生态脆弱性.
- 综合RS和土壤生物多样性数据有效地分类CET,指导有针对性的生态保护战略.
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