摘要
在全球变化背景下,揭示土壤养分系统对气候和人类耕地利用活动变化的响应对于农业可持续发展至关重要。基于焉耆盆地的气候、耕地利用强度(LUI)和土壤养分数据,采用敏感性、贡献率和GIS方法分析了土壤养分系统对气候和人类耕地利用活动变化的敏感性及其空间分异特征。结果表明:焉耆盆地气候暖湿化趋势明显(气温倾向率为3℃/(10a),降水量倾向率为39 mm/(10a)),LUI微幅上升;土壤养分系统对气候和LUI变化的敏感性存在显著的空间差异和响应差异。土壤养分系统对气温变化敏感性的空间异质性更高,对LUI变化敏感性更具有响应深度;气候和LUI对土壤养分系统变化的贡献率空间分异明显,并且LUI的贡献率大于气候;土壤养分系统的敏感性及其空间布局是自然环境和人类耕地利用活动相互调节和空间分异的综合结果。研究结果可为提高区域土壤养分系统应对气候变化的能力和耕地精准高效管理提供科学依据。
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 39 mm/(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.
作者
盛洋
刘维忠
刘新平
SHENG Yang;LIU Weizhong;LIU Xinping(College of Economics and Management,Xinjiang Agricultural University,Urumqi 830052,China;Arid Region Rural Development Resarch Center,Xinjiang Agricultural University,Urumqi 830052,China;School of Public Administration,Xinjiang Agricultural University,Urumqi 830052,China;Institute of Land Science,Xinjiang Agricultural University,Urumqi 830052,China)
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2023年第5期295-307,共13页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金NSFC-新疆联合基金重点支持项目(U1603235)。
关键词
土壤养分系统
气候变化
敏感性
适应性
空间分异特征
焉耆盆地
soil nutrient system
climate change
sensitivity
adaptation
spatial differentiation features
Yanqi Basin
