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Scenario-based estimation of catchment carbon storage: linking multi-objective land allocation with InVEST model in a mixed agriculture-forest landscape
Frontiers of Earth Science ( IF 2 ) Pub Date : 2020-09-29 , DOI: 10.1007/s11707-020-0825-1
Rahmatollah Niakan Lahiji , Naghmeh Mobarghaee Dinan , Houman Liaghati , Hamidreza Ghaffarzadeh , Alireza Vafaeinejad

This study performed a scenario-based land allocation in a mixed agriculture-forest landscape in northern Iran to investigate how different land use policies contribute to changes in carbon storage. In pursuit of this goal, a temporal profile of the trade-off between the region’s land use land cover (LULC) classes was produced using Landsat image of the year 2016. The weighted linear combination procedure was also used to map the suitability of land for agriculture, forest, urban, and rangeland based on ecological and socio-economic criteria. The suitability maps were analyzed through the Multi-Objective Land Allocation procedure under five scenarios with differing areas devoted to each LULC to generate different patterns of LULC distribution in the region. In addition, the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model was used to estimate the potential of LULC classes in carbon storage. The amount of carbon storage differed significantly between the scenarios, ranging from 1.29 tons/ha/year when the majority of the land was devoted to agriculture (76% of the area) to 5.40 tons/ha/year when the landscape was dominated by forest (77% of the area). The extreme conditions presented in this research may not be as likely to occur, but opens a dialog between different stakeholders and informs of a probable trend of ecosystem service loss due to agricultural land expansion.



中文翻译:

基于情景的流域碳储量估算:将多目标土地分配与InVEST模型相结合,实现农林混合景观

这项研究在伊朗北部的农林混合景观中进行了基于情景的土地分配,以调查不同的土地利用政策如何促进碳储量的变化。为了实现这一目标,使用2016年的Landsat图像绘制了该地区的土地利用土地覆被(LULC)类之间的权衡的时间概况。加权线性组合程序还用于绘制土地的适宜性基于生态和社会经济标准的农业,森林,城市和牧场。通过多目标土地分配程序在五种情况下分析了适宜性图,其中五种不同的区域专用于每个土地利用的土地利用变化,以产生该地区土地利用变化的分布模式。此外,生态系统服务与折衷综合评估(InVEST)模型用于估算LULC类在碳储存中的潜力。两种方案之间的碳储存量差异很大,范围从大部分土地用于农业(占该地区的76%)的1.29吨/公顷/年到以森林为主的景观的5.40吨/公顷/年。 (占面积的77%)。这项研究提出的极端条件可能不太可能发生,但会在不同利益相关者之间展开对话,并告知由于农业用地扩张而造成的生态系统服务损失的可能趋势。当大部分土地用于农业(占面积的76%)时为29吨/公顷/年,而当景观以森林为主(占面积的77%)时则为5.40吨/公顷/年。这项研究提出的极端条件可能不太可能发生,但会在不同利益相关者之间展开对话,并告知由于农业用地扩张而造成的生态系统服务损失的可能趋势。当大部分土地用于农业(占面积的76%)时为29吨/公顷/年,而当景观以森林为主(占面积的77%)时则为5.40吨/公顷/年。这项研究提出的极端条件可能不太可能发生,但会在不同利益相关者之间展开对话,并告知由于农业用地扩张而造成的生态系统服务损失的可能趋势。

更新日期:2020-09-30
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