As a kind of activity to break down the original land ecosystem, land consolidation causes the ecosystem to undergo a process of “stability-unstable-stable”. The Chaohu Lake Basin is a typical traditional agricultural planting area and extensive implementation of large-scale land consolidation projects. By monitoring the impact of land consolidation activities in a specific time period in the basin on the project areas and surrounding environment, the spatial and temporal impacts of large-scale land consolidation on regional eco-environmental quality are analyzed. This study mainly monitors crop growth, soil moisture and temperature changes in the land consolidation project area, and the corresponding changes in the surrounding environment. The response of ecological environment factors caused by land consolidation can be embodied in indicators such as humidity, greenness, heat and dryness. Four indicators of NDVI, WET, LST, and NDBSI were selected, using principal component analysis, monitoring the environmental quality changes in the land consolidation areas of Chaohu Lake Basin. Result shows that the ecological environmental quality of the study area exhibits long-term convergence and short-term divergence, and the correlation between the ecological indicators is not significant. The average contribution rate of the first principal component eigenvalue is 67.94 %. The implementation period of the land consolidation project will seriously interfere with the ecological environment, but it can be restored within 3–5 years after implementation, and the ecological environmental quality of the project area will continue to improve. Land consolidation not only can improve the quality of the ecological environment in the consolidation area, but also can promote the surrounding environment. The findings provide theoretical basis and decision guidance for the improvement of land consolidation planning and design (reconstruction) in China, and offer suggestions on strategy-oriented support and scientific basis for promoting the long-term development of land consolidation worldwide.

中文翻译：

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基于遥感的土地整理对生态环境质量的影响——以巢湖流域为例

土地整理作为一种破坏原有土地生态系统的活动，使生态系统经历“稳定-不稳定-稳定”的过程。巢湖流域是典型的传统农业种植区，是大规模土地整理项目广泛实施的地区。通过监测流域特定时期土地整理活动对项目区及周边环境的影响，分析大规模土地整理对区域生态环境质量的时空影响。本研究主要监测土地整理项目区作物生长、土壤水分和温度变化，以及周边环境的相应变化。土地整理引起的生态环境因素的响应可以体现在湿度、绿度、热度和干燥度等指标上。选取NDVI、WET、LST、NDBSI 4个指标，采用主成分分析法，对巢湖流域土地整理区环境质量变化进行监测。结果表明，研究区生态环境质量呈现长期趋同和短期发散，生态指标间相关性不显着。第一主成分特征值的平均贡献率为67.94%。土地整理项目实施期对生态环境造成严重干扰，但实施后3-5年内可恢复，项目区生态环境质量将不断改善。土地整理不仅可以改善整理区的生态环境质量，还可以促进周边环境的改善。研究结果为完善我国土地整理规划设计（改建）提供理论依据和决策指导，为推动全球土地整理事业的长远发展提供战略支撑和科学依据。