The gradual conversion of rangelands into other land use types is one of the main challenges affecting the sustainable management of rangelands in Teltele. This study aimed to examine the changes, drivers, trends in land use and land cover (LULC), to determine the link between the Normalized Difference Vegetation Index (NDVI) and forage biomass and the associated impacts of forage biomass production dynamics on the Teltele rangelands in Southern Ethiopia. A Combination of remote sensing data, field interviews, discussion and observations data were used to examine the dynamics of LULC between 1992 and 2019 and forage biomass production. The result indicate that there is a marked increase in farm land (35.3%), bare land (13.8%) and shrub land (4.8%), while the reduction found in grass land (54.5%), wet land (69.3%) and forest land (10.5%). The larger change in land observed in both grassland and wetland part was observed during the period from 1995–2000 and 2015–2019, this is due to climate change impact (El-Niño) happened in Teltele rangeland during the year 1999 and 2016 respectively. The quantity of forage in different land use/cover types, grass land had the highest average amount of forage biomass of 2092.3 kg/ha, followed by wetland with 1231 kg/ha, forest land with 1191.3 kg/ha, shrub land with 180 kg/ha, agricultural land with 139.5 kg/ha and bare land with 58.1 kg/ha. The significant linkage observed between NDVI and LULC change types (when a high NDVI value, the LULC changes also shows positive value or an increasing trend). In addition, NDVI value directly related to the greenness status of vegetation occurred on each LULC change types and its value directly linkage forage biomass production pattern with grassland land use types. 64.8% (grass land), 43.3% (agricultural land), 75.1% (forest land), 50.6% (shrub land), 80.5% (bare land) and 75.5% (wet land) more or higher dry biomass production in the wet season compared to the dry season.

中文翻译：

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埃塞俄比亚南部博拉纳牧场特尔特勒地区草料和土地覆盖变化的动态：使用地理空间和田野调查数据

牧场逐渐转化为其他土地利用类型是影响特尔特莱牧场可持续管理的主要挑战之一。这项研究旨在研究土地利用和土地覆盖的变化，动因，趋势（LULC），以确定归一化植被指数（NDVI）和牧草生物量之间的联系以及牧草生物量生产动态对泰特尔牧场的相关影响。在埃塞俄比亚南部。结合了遥感数据，实地访谈，讨论和观察数据，研究了1992年至2019年之间土地利用，土地利用变化和饲料生物量的动态。结果表明，耕地（35.3％），裸地（13.8％）和灌木地（4.8％）显着增加，而草地（54.5％），湿地（69.3％）和灌木地减少了。林地（10.5％）。在1995–2000年和2015–2019年期间，在草地和湿地中观测到的土地变化较大，这是由于分别在1999和2016年发生在Teltele牧场的气候变化影响（El-Niño）。不同土地利用/覆盖类型的牧草数量最大，草地平均牧草生物量最高，为2092.3 kg / ha，其次是湿地为1231 kg / ha，林地为1191.3 kg / ha，灌木地为180 kg /公顷，农业用地为139.5千克/公顷，裸地为58.1千克/公顷。NDVI和LULC变化类型之间观察到显着的联系（当NDVI值较高时，LULC变化也显示正值或呈上升趋势）。此外，在每种LULC变化类型上都发生了与植被的绿色状态直接相关的NDVI值，其NDVI值直接将牧草生物量生产模式与草地土地利用类型联系起来。湿地的干生物质产量在64.8％（草地），43.3％（农业用地），75.1％（林地），50.6％（灌木地），80.5％（光地）和75.5％（湿地）以上相比干旱季节。