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Effects of land use/land cover and climatic change on the ecosystem of North Ningxia, China
Arabian Journal of Geosciences Pub Date : 2020-10-16 , DOI: 10.1007/s12517-020-06047-6
Hazem T. Abd El-Hamid , Wei Caiyong , Mohammed A. Hafiz , Elhadi K. Mustafa

Land use/land cover change (LUCC) and climate changes are responsible for degradation of any ecosystem in arid and semi-arid regions. Studying the ecological variations is particularly essential for any type of sustainable development, in which LUCC considers as one of the chief inputs. The main objective is to evaluate the impacts of LUCC and climatic changes on the Ecosystem Vulnerability (ESV) using remote sensing and some statistical models around the Yellow River, Ningxia, China. Eleven classes of LUCC were identified during 1995 and 2019: village land, bare land, grassland, industrial land, irrigated land, swamp land, tidal flat, transportation land, urban land, water bodies, and water channels. Grassland may be decreased annually with percentage − 5.873% due to some human activities and environmental changes in climate from one season to another. About 24.23 km2 and 24.86 km2 was converted from grassland to industrial lands and irrigated lands, respectively. ESV has been calculated using LULC, DEM, slope, soil, and geology. About 45% and 60% of 1995 and 2019, respectively, undergone moderate vulnerability. The annual rate of ESVI decreased in low and reasonable but it was increased in moderate, high, and extreme showing – 4.166% as a total percentage of annual vulnerability. High vulnerability area needs proper management. Majority of vegetation area is located in zone under the moderate vulnerability zone; in contrast, grasslands were subjected to high vulnerability. Areas around the Yellow River were subjected to drought and flooding due to climatic change affecting negatively on the production of crops. Also, the desert lands of the study area have been turned to agriculture according to statistical model. Population growth, industrial development, and governmental policies for ecosystem protection were responsible for major changes. This study is more beneficial for decision-making in eco-environmental protecting and planning. Results of this study could help planners in formulating effective strategies for better management of ecosystem.



中文翻译:

土地利用/土地覆被和气候变化对宁北北部生态系统的影响

土地使用/土地覆盖变化(LUCC)和气候变化是干旱和半干旱地区任何生态系统退化的原因。对于任何类型的可持续发展而言,研究生态变化都是至关重要的,LUCC将其视为主要投入之一。其主要目的是评估土地利用变化对生态系统脆弱性的影响和气候变化(E小号V)使用遥感技术和宁夏黄河周围的一些统计模型。在1995年至2019年期间,确定了11类LUCC:乡村土地,光秃秃的土地,草地,工业用地,灌溉土地,沼泽地,滩涂,运输地,城市土地,水体和水道。由于某些人类活动和一个季节到另一个季节的气候变化,草原可能每年减少-5.873%。分别将约24.23 km 2和24.86 km 2从草地转变为工业用地和灌溉地。Ë小号V具有一直使用LULC,DEM,坡度,土壤和地质计算。1995年和2019年分别约有45%和60%经历了中等程度的脆弱性。E S的年率VI在较低和合理的水平上有所下降,但在中等,较高和极端水平下则有所增加–占年度漏洞总数的4.166%。高漏洞区域需要适当的管理。大部分植被区位于中度脆弱区以下。相反,草原遭受的脆弱性很高。由于气候变化,黄河周围地区遭受干旱和洪水泛滥,对农作物的生产产生不利影响。此外,根据统计模型,研究区域的荒地已转为农业。人口增长,工业发展和政府的生态系统保护政策是造成重大变化的原因。这项研究对于生态环境保护和规划方面的决策更加有益。

更新日期:2020-10-17
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