中国黄土高原不同树龄苹果园的环境效应和经济效益评估

IF 3.9 2区 农林科学 Q1 AGRONOMY Plant and Soil Pub Date : 2024-10-21 DOI:10.1007/s11104-024-06999-8
Man Zhang, Lu Cai, Cui Li, Qiong Zhang, Weixin Wang, Kaixuan Wang
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引用次数: 0

摘要

方法与目的 本研究连续监测了不同树龄苹果园的温室气体(GHG)排放量,基于生命周期评估(LCA)方法估算了碳足迹(CF),并评估了净生态系统碳预算(NECB)和净生态系统经济效益(NEEB)。15年施肥果园(N15)的N2O排放量分别比5年施肥果园(N5)和25年施肥果园(N25)高出119.5%和53.7%。与未施肥地块相比,施肥显著增加了土壤 CO2 排放量、N2O 排放量、土壤有机碳(SOC)、溶解有机碳(DOC)、微生物生物量碳(MBC)含量和土壤有机碳固持率(SOCSR)。同时,SOC、MBC 和 SOCSR 随树龄的增加而增加。不同树龄苹果园的总CF值范围为-786.8-8768.1 kg CO2-eq ha-1-yr-1,CF值与施肥量和N2O排放量呈正相关。就施肥地块而言,化肥(38.6%-49.1%)和一氧化二氮排放(12.0%-14.9%)是造成总二氧化碳当量的前两个因素。在非施肥地块,N2O 排放和农药是造成总 CF 的主要因素。结论 优化肥料管理和提高苹果产量是增加经济效益和减少环境影响的有效策略,有利于中国黄土高原苹果园的可持续发展。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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The assessment of environmental effect and economic benefit for apple orchard under different stand ages in the Loess Plateau, China

Methods and aims

This study continuously monitored the greenhouse gas (GHG) emissions from different stand ages apple orchards, estimated the carbon footprint (CF) based on the life cycle assessment (LCA) method, and evaluated the net ecosystem carbon budget (NECB) and net ecosystem economic benefit (NEEB).

Results

The CO2 emissions from soil respiration increased with the stand ages. The N2O emission in 15-year fertilized orchard (N15) was higher than that in 5-year fertilized orchard (N5) and 25-year fertilized orchard (N25) by 119.5% and 53.7%, respectively. Compared to non-fertilized plots, fertilization significantly increased the soil CO2 emissions, N2O emissions, soil organic carbon (SOC), dissolved organic carbon (DOC), microbial biomass carbon (MBC) contents and soil organic carbon sequestration rate (SOCSR). Meanwhile, SOC, MBC, SOCSR increased with the stand ages. The total CF in different stand ages apple orchards ranged from –786.8 to 8768.1 kg CO2-eq ha–1yr–1, and the CF was positively correlated with fertilizer application rates and N2O emissions. For the fertilized plots, fertilizer (38.6%-49.1%) and N2O emissions (12.0%-14.9%) were the top two contributors to total CF. N2O emissions and pesticides were essential contributors to total CF for the non-fertilized plots. The NECB was negatively correlated with yield and CO2 emissions, and the NEEB was positively correlated with yield, excessive fertilizer input decreased the NEEB.

Conclusions

The optimizing fertilizer management and increasing apple yield should be the efficiency strategies employed to increase economic benefit and decrease environmental effects, which would be beneficial to the sustainable development of apple orchards in Loess Plateau, China.

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来源期刊
Plant and Soil
Plant and Soil 农林科学-农艺学
CiteScore
8.20
自引率
8.20%
发文量
543
审稿时长
2.5 months
期刊介绍: Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and that enhance our mechanistic understanding of plant-soil interactions. We focus on the interface of plant biology and soil sciences, and seek those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at understanding underlying mechanisms of plant-soil interactions. Manuscripts can include both fundamental and applied aspects of mineral nutrition, plant water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics, as long as they are hypothesis-driven and enhance our mechanistic understanding. Articles including a major molecular or modelling component also fall within the scope of the journal. All contributions appear in the English language, with consistent spelling, using either American or British English.
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