Tribhuvan University, Institute of Forestry, Pokhara Campus, Post Box No. 43, Hariyokharka 15, Pokhara, Gandaki Province, Nepal.
Faculty of Forestry, Agriculture and Forestry University, Hetauda-44107, Makawanpur, Nepal.
ScientificWorldJournal. 2022 Feb 21;2022:5129423. doi: 10.1155/2022/5129423. eCollection 2022.
This study was conducted in Tanahun district of Gandaki Province, Nepal, to analyze the land cover change over two decades, the migration effect in land cover, and the impact caused in crop production by . Landsat TM/ETM+ for land use of 2000 and 2010 extracted by ICIMOD and Landsat 8 OLI/TIRS satellite images for land cover 2019 were downloaded from the USGS website. A purposive sample for household survey was carried out based on crops damaged by the monkey. Two hundred and fifty households were taken as samples. The Landsat images were analyzed by ArcGIS, and the social data were analyzed using SPSS and MS Excel. Land cover change data revealed increment of forest cover from 36.57% to 40.91% and drastic decrease in agriculture crops from 57.52% to 43.78% in the period of 20 years. The accuracy of the data showed overall classification accuracy of 86.11%, 81.08%, and 75% with overall kappa statistics 0.83, 0.77, and 0.74, respectively. The migration effect in the land cover was related to remittance and migrated members and found a significant positive relationship. Analyzing the trend of production with an increase in the forest cover, 21% decrease in paddy, 5% decrease in maize, and 26% decrease in millet were found as compared to the production in 2000. The econometric model concluded that the quantity of crop damage was negatively significant in relation to distance from forest and distance from water body while positively significant to distance from settlements and distance from owner's home. The quantity of crop damage was estimated 113.89 kg per household, and the cost was 78.82 USD. This study recommends active forest management; regular thinning, and weeding. Remittance generated should be invested in the agriculture field by the households. Damage relief should be made available for the damage cost by .
这项研究在尼泊尔甘达基省的塔楠区进行，旨在分析过去二十年来的土地覆盖变化、土地覆盖变化中的移民效应以及 对作物生产造成的影响。从美国地质调查局网站下载了由国际山地综合发展中心提取的 2000 年和 2010 年的土地使用的 Landsat TM/ETM+ 数据和 2019 年的 Landsat 8 OLI/TIRS 卫星图像，用于土地覆盖。根据猴子损坏的作物，进行了一项针对家庭调查的有目的抽样。选取了 250 户作为样本。使用 ArcGIS 分析 Landsat 图像，使用 SPSS 和 MS Excel 分析社会数据。土地覆盖变化数据显示，在 20 年期间，森林覆盖从 36.57%增加到 40.91%，而农业作物从 57.52%急剧减少到 43.78%。数据的准确性显示，总体分类精度分别为 86.11%、81.08%和 75%，总体kappa 统计量分别为 0.83、0.77 和 0.74。土地覆盖的移民效应与汇款和移民成员有关，并发现存在显著的正相关关系。通过分析随着森林覆盖增加的生产趋势，与 2000 年的产量相比，发现水稻减少了 21%，玉米减少了 5%，小米减少了 26%。计量经济学模型得出的结论是，与森林和水体的距离呈负相关，而与定居点和业主家的距离呈正相关，与作物受损的数量有显著的负相关。每户作物受损量估计为 113.89 公斤，成本为 78.82 美元。本研究建议进行积极的森林管理；定期疏伐和除草。家庭应将汇款投资于农业领域。应提供损失救济，以弥补损失成本。
