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焉耆盆地土壤養(yǎng)分系統(tǒng)敏感性空間分異特征研究
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國家自然科學(xué)基金NSFC-新疆聯(lián)合基金重點支持項目


Sensitivity and Adaptation of Soil Nutrient Systems to Climate Change: Case Study of Yanqi Basin, Xinjiang
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    摘要:

    在全球變化背景下,揭示土壤養(yǎng)分系統(tǒng)對氣候和人類耕地利用活動變化的響應(yīng)對于農(nóng)業(yè)可持續(xù)發(fā)展至關(guān)重要。基于焉耆盆地的氣候、耕地利用強度(LUI)和土壤養(yǎng)分?jǐn)?shù)據(jù),采用敏感性、貢獻率和GIS方法分析了土壤養(yǎng)分系統(tǒng)對氣候和人類耕地利用活動變化的敏感性及其空間分異特征。結(jié)果表明:焉耆盆地氣候暖濕化趨勢明顯(氣溫傾向率為3℃/(10a),降水量傾向率為39mm/(10a)),LUI微幅上升;土壤養(yǎng)分系統(tǒng)對氣候和LUI變化的敏感性存在顯著的空間差異和響應(yīng)差異。土壤養(yǎng)分系統(tǒng)對氣溫變化敏感性的空間異質(zhì)性更高,對LUI變化敏感性更具有響應(yīng)深度;氣候和LUI對土壤養(yǎng)分系統(tǒng)變化的貢獻率空間分異明顯,并且LUI的貢獻率大于氣候;土壤養(yǎng)分系統(tǒng)的敏感性及其空間布局是自然環(huán)境和人類耕地利用活動相互調(diào)節(jié)和空間分異的綜合結(jié)果。研究結(jié)果可為提高區(qū)域土壤養(yǎng)分系統(tǒng)應(yīng)對氣候變化的能力和耕地精準(zhǔn)高效管理提供科學(xué)依據(jù)。

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    In the context of global change, it is important for sustainable agricultural development to reveal the response of soil nutrient system to changes in climate and human cropland use. Based on the climate, land use intensity (LUI) and soil nutrient data of Yanqi Basin, the sensitivity, contribution rate and GIS methods were used to analyze the sensitivity and spatial differentiation of soil nutrient system to climate and human land use activities. The results showed that there was an obvious trend of warming and wetting in Yanqi Basin (the temperature tendency rate was 3℃/(10a), the precipitation tendency rate was 39mm/(10a)), and the LUI was increased slightly. There were significant spatial differences in the sensitivity and response of soil nutrient systems to climate and LUI changes. The soil nutrient system had higher spatial heterogeneity in sensitivity to temperature change and more depth of response to LUI change. The contribution rate of climate and LUI to soil nutrient system was significantly different, and the contribution rate of LUI was greater than that of climate. The sensitivity of soil nutrient system and its spatial distribution were the result of mutual regulation and spatial differentiation between natural environment and human cultivated land utilization. The results can provide scientific basis for improving the ability of soil nutrient system to cope with climate change and the precise and efficient management of cultivated land.

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盛洋,劉維忠,劉新平.焉耆盆地土壤養(yǎng)分系統(tǒng)敏感性空間分異特征研究[J].農(nóng)業(yè)機械學(xué)報,2023,54(5):295-307. HENG Yang, LIU Weizhong, LIU Xinping. Sensitivity and Adaptation of Soil Nutrient Systems to Climate Change: Case Study of Yanqi Basin, Xinjiang[J]. Transactions of the Chinese Society for Agricultural Machinery,2023,54(5):295-307.

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  • 收稿日期:2022-08-03
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  • 在線發(fā)布日期: 2023-05-10
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