Northeast China hosts one of the world’s four major black soil regions,accounting for approximately 36 million hectares of cultivated land.Producing one-quarter of China’s total grain output and one-third of its com...Northeast China hosts one of the world’s four major black soil regions,accounting for approximately 36 million hectares of cultivated land.Producing one-quarter of China’s total grain output and one-third of its commercial grain transfers,this region serves as a vital cornerstone for national food security.However,unsustainable land use and climate change have driven severe soil degradation,manifesting as thinning topsoil,declining organic matter,and increased bulk density-collectively threatening sustainable production.To address these challenges,we conducted a five-year intensive study,and proposed an innovative degradation control theory centered on“enhancing inherent stable soil fertility”.A targeted technological system was developed,with emphasis on the incorporation of multi-source organic materials and optimized tillage practices,to overcome key technical barriers to soil restoration under intensive farming.Furthermore,in light of regional variations in environmental conditions and soil constraints,locally adapted models for black soil conservation-such as the“Longjiang Model”,“Lishu Model 2.0”,and“Da’an Model”,have been established.In core demonstration areas,these approaches achieved notable outcomes:Soil organic matter increased by 13%-17%,soil erosion intensity decreased by more than 80%,and crop yields improved by 5.4%-14.2%.This study provides robust scientific support for national strategies aimed at conserving and sustainably utilizing black soil resources.展开更多
The black soil of northeast China is a“ballast stone”of the nation’s food security and a crucial asset for regional ecological stability.However,it faces severe degradation due to long-term,high-intensity cultivati...The black soil of northeast China is a“ballast stone”of the nation’s food security and a crucial asset for regional ecological stability.However,it faces severe degradation due to long-term,high-intensity cultivation and soil erosion.To address this issue,the Chinese Academy of Sciences,in collaboration with the three northeastern provinces and Inner Mongolia,launched the“Black Soil Granary”campaign in March 2021.This initiative has achieved phased progress in basic theoretical research,key technology development,equipment fabrication,and technology demonstration.As the campaign continues,innovative technologies,including region-specific models for controlling black soil degradation,methods to enhance both soil health and productivity,and breakthroughs in smart agriculture,are playing a key role in protecting and sustainably utilizing black soils,thus providing strong scientific support for national food security.展开更多
基金supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(XDA28000000).
文摘Northeast China hosts one of the world’s four major black soil regions,accounting for approximately 36 million hectares of cultivated land.Producing one-quarter of China’s total grain output and one-third of its commercial grain transfers,this region serves as a vital cornerstone for national food security.However,unsustainable land use and climate change have driven severe soil degradation,manifesting as thinning topsoil,declining organic matter,and increased bulk density-collectively threatening sustainable production.To address these challenges,we conducted a five-year intensive study,and proposed an innovative degradation control theory centered on“enhancing inherent stable soil fertility”.A targeted technological system was developed,with emphasis on the incorporation of multi-source organic materials and optimized tillage practices,to overcome key technical barriers to soil restoration under intensive farming.Furthermore,in light of regional variations in environmental conditions and soil constraints,locally adapted models for black soil conservation-such as the“Longjiang Model”,“Lishu Model 2.0”,and“Da’an Model”,have been established.In core demonstration areas,these approaches achieved notable outcomes:Soil organic matter increased by 13%-17%,soil erosion intensity decreased by more than 80%,and crop yields improved by 5.4%-14.2%.This study provides robust scientific support for national strategies aimed at conserving and sustainably utilizing black soil resources.
基金supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA28000000)
文摘The black soil of northeast China is a“ballast stone”of the nation’s food security and a crucial asset for regional ecological stability.However,it faces severe degradation due to long-term,high-intensity cultivation and soil erosion.To address this issue,the Chinese Academy of Sciences,in collaboration with the three northeastern provinces and Inner Mongolia,launched the“Black Soil Granary”campaign in March 2021.This initiative has achieved phased progress in basic theoretical research,key technology development,equipment fabrication,and technology demonstration.As the campaign continues,innovative technologies,including region-specific models for controlling black soil degradation,methods to enhance both soil health and productivity,and breakthroughs in smart agriculture,are playing a key role in protecting and sustainably utilizing black soils,thus providing strong scientific support for national food security.
