数字农科院2.0

Water Footprint And Life Cycle Assessment Of Edible Onion Production - A Case Study In Iran

文献类型： 外文期刊

作者： Esmaeilzadeh, S; Asgharipour, MR; Khoshnevisan, B

作者机构：

关键词： Cleaner Production; Environmental Consequences; Environmental Assessment; Eutrophication; Farm Size; Global Warming Impact; Human Toxicity

期刊名称： SCIENTIA HORTICULTURAE

ISSN： 0304-4238

年卷期： 2020 年 261 卷

页码：

收录情况： JCR（2021版）

摘要： This research was conducted in Bojnord County, Iran, to identify the environmental impacts of onion production under different farm management strategies and their related soil, water, and air emissions. Life Cycle Assessment (LCA) with a cradle-to-gate approach was employed in the present study to introduce the hotspots in onion production life cycle. To compile the inventory data, a functional unit of one ton of onion was opted. The inventory data was collected from meteorological organizations, face-to-face questionnaires, and available databases such as Ecoinvent (R) 3.0, while LCA modeling was performed by SimaPro (R) 8.3. Ten impact categories under "CML 2 baseline" impact assessment method were taken into account to translate the inventory data into various environmental indices. To determine the correlation between farm size and global warming impact (GWI), the surveyed farms were grouped into three different clusters and then statistically compared using SAS (R) 9.1 and Minitabe (R) 16.2. Based on the results achieved, electricity, machinery, and diesel fuel had the highest contribution to total energy consumption by 48%, 27%, and 15%, respectively. Abiotic depletion (AD) (1.7 g Sb eq.t-1), Global warming impact (GW) (324 kg CO2 eq. t-1), Ozone layer depletion (OD) (0.02 g CFC-11 eq. t(-1)), Human toxicity (HT) (446 kg 1,4-DB eq. t-1), Freshwater aquatic ecotox (FAEF) (133 kg 1,4-DB eq. t(-1)), Marine aquatic ecotoxicity (MAET) (295000 kg 1,4-DB eq. t(-1)), Terrestrial ecotoxicity (TE) (5.7 g 1,4-DB eq. t(-1)), Photochemical oxidation (PhO) (0.174 kg C2H4 eq. t(-1)), Acidification (AC) (2.64 kg SO2 eq. t(-1)) and Eutrophication (EU) (1.92 kg PO43- eq. t(-1)) were calculated. The results showed that machinery and electricity had the highest contributions to all impact categories, respectively. Furthermore, it was observed that the smaller farm size the higher global warming impact. Global warming impact for smallest farms was almost two times as much as that of the large farms. The results achieved herein encourage the idea of consolidating the small onion farms to improve farm management practices, so that decrease the negative environmental impacts.

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