Long‐term effects of soil erosion on dryland crop yields in the Songnen Plain, Northeast China

IF 5 3区农林科学 Q1 SOIL SCIENCE

Soil Use and Management Pub Date : 2024-04-06 DOI:10.1111/sum.13044

Ziyang Yu, Xinlei Zhang, Jiatong Liu, Guoping Lei

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引用次数: 0

Abstract

The elucidation of the influence of soil erosion on crop yields is of paramount importance to ensure food security. Remote sensing data has facilitated the acquisition of long‐term spatially‐distributed information on soil erosion modulus and crop yields. The Revised Universal Soil Loss Equation (RUSLE) model was employed to estimate the soil erosion modulus, while the Carnegie‐Ames‐Stanford Approach (CASA) model has been utilized to calculate the net primary productivity (NPP). This study integrated models to assess the impact of soil erosion on dryland crop yields in the Songnen Plain from 2000 to 2020. The findings reveal that the annual average soil erosion modulus for dry cropland in black soil region (BSR) of the Songnen Plain is 4.2 (t ha−1 yr−1), which is 1.5 times greater than that of the other region (OR). The greater cropland erosion within the BSR limited the trend for increasing crop yields, whereas the impact of erosion on crop yield dynamics in the OR was not significant. The areas where dryland crop yields diminished in the Songnen Plain because of soil erosion were predominantly concentrated within the BSR. Advancements in agricultural technology have partially mitigated the adverse consequences of erosion on yields.

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水土流失对中国东北松嫩平原旱地作物产量的长期影响

阐明土壤侵蚀对作物产量的影响对于确保粮食安全至关重要。遥感数据有助于获取有关土壤侵蚀模数和作物产量的长期空间分布信息。该研究采用了修订的通用土壤流失方程 (RUSLE) 模型来估算土壤侵蚀模数，并利用卡内基-阿姆斯-斯坦福方法 (CASA) 模型来计算净初级生产力 (NPP)。本研究综合各种模型，评估了 2000 年至 2020 年土壤侵蚀对松嫩平原旱地作物产量的影响。研究结果表明，松嫩平原黑土区（BSR）旱地的年均土壤侵蚀模数为 4.2（t ha-1 yr-1），是其他地区（OR）的 1.5 倍。松嫩平原耕地侵蚀加剧限制了作物产量的增长趋势，而其他地区耕地侵蚀对作物产量动态的影响并不显著。松嫩平原因水土流失而导致旱地作物减产的地区主要集中在黑土区。农业技术的进步在一定程度上减轻了水土流失对产量的不利影响。

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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来源期刊

Soil Use and Management 农林科学-土壤科学

CiteScore

7.70

自引率

13.20%

发文量

审稿时长

3 months

期刊介绍： Soil Use and Management publishes in soil science, earth and environmental science, agricultural science, and engineering fields. The submitted papers should consider the underlying mechanisms governing the natural and anthropogenic processes which affect soil systems, and should inform policy makers and/or practitioners on the sustainable use and management of soil resources. Interdisciplinary studies, e.g. linking soil with climate change, biodiversity, global health, and the UN’s sustainable development goals, with strong novelty, wide implications, and unexpected outcomes are welcomed.