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Exploring relationships among landownership, landscape diversity, and ecological productivity in Kentucky
Land Use Policy ( IF 6.0 ) Pub Date : 2021-09-14 , DOI: 10.1016/j.landusepol.2021.105723
Saaruj Khadka 1 , Buddhi R. Gyawali 2 , Tilak B. Shrestha 2 , Richard Cristan 3 , Swagata “Ban” Banerjee 4 , George Antonious 2 , Hari P. Poudel 5
Affiliation  

Kentucky has varied landscapes favorable for different land use land cover and agroecosystem management. The changes in land use land cover concerning a change in landownership structure can potentially alter landscape diversity and ecological productivity. This research examined the relationship among land cover, ownership structure (small, medium, and large parcel), and ecological productivity in Scott, Morgan, and Graves counties of Kentucky. Landsat 4–5 TM and 8 OLI (30-meter) imagery were used for supervised classification, accuracy assessment, and change detection at the pixel level in the years 2001, 2011, and 2016 for major land cover classes. The correlations in landscape diversity were analyzed using parcel data and thematic maps. Ecological productivity was estimated using the MODIS-NDVI 250 m, 16-day mean composite data along with parcel data. The change in land cover was primarily noticed in the cultivated crops and water, cultivated crops, and forest and pasture in Scott, Morgan, and Graves Counties, respectively. There was a strong negative correlation among agriculture, forest, and developed lands. The parcel size was significant (p < 0.05) for most of the land cover classes, but the relationships were not consistent in all combinations of year and counties. The ecological productivity was significantly different (p < 0.05) between small, medium, and large parcels. Further research is needed on other driving factors so that appropriate policy and decisions can be set for sustainable agroecosystem management.



中文翻译:

探索肯塔基州土地所有权、景观多样性和生态生产力之间的关系

肯塔基州的景观多种多样,有利于不同的土地利用土地覆盖和农业生态系统管理。与土地所有权结构变化有关的土地利用土地覆盖变化可能会改变景观多样性和生态生产力。本研究调查了肯塔基州斯科特县、摩根县和格雷夫斯县的土地覆盖、所有权结构(小、中、大地块)和生态生产力之间的关系。Landsat 4-5 TM 和 8 OLI(30 米)影像在 2001、2011 和 2016 年用于主要土地覆盖类别的像素级监督分类、精度评估和变化检测。使用宗地数据和专题地图分析了景观多样性的相关性。使用 MODIS-NDVI 250 m 估算生态生产力,16 天平均复合数据以及宗地数据。土地覆盖的变化主要分别在斯科特县、摩根县和格雷夫斯县的耕种作物和水、耕种作物以及森林和牧场中出现。农业、森林和发达土地之间存在很强的负相关。包裹大小显着(p < 0.05 ) 对于大多数土地覆盖类别,但在年份和县的所有组合中,这种关系并不一致。小、中、大地块的生态生产力存在显着差异(p < 0.05)。需要进一步研究其他驱动因素,以便为可持续农业生态系统管理制定适当的政策和决策。

更新日期:2021-09-14
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