Subjects: Geosciences >> Geology submitted time 2023-08-23 Cooperative journals: 《中国科学院院刊》
Abstract： Over the past 45 years, China has accomplished great achievements in carrying out “Three-North” project. Through largescale vegetation construction, the trends of land desertification, soil salinization, soil erosion and the deterioration of people’s living environment in the “Three-North” areas have been effectively restrained. The people in the desert area are getting rid of poverty and living a healthy life. In the new era, the “Three-North” project has encountered new demands, new challenges and new opportunities, and it is urgent to achieve a significant transform and upgrade and to improve quality and efficiency. This paper summarizes the current situation of the “Three-North” project construction, focuses on the three-north project general planning and the sixth phase planning and the realization path of the “three transformations”, interprets the strategic planning of the “three iconic battles” in the next ten years, and describes the strategic vision of “New Three-North” in the future. A series of specific policy suggestions are put forward such as strengthening institution and capacity building , demonstration zone planning and strengthening scientific and technological support.
Subjects: Statistics >> Social Statistics submitted time 2023-08-12 Cooperative journals: 《中国科学院院刊》
Abstract： Over the past 45 years, China has accomplished great achievements in carrying out “Three-North” project. Through largescale vegetation construction, the trends of land desertification, soil salinization, soil erosion and the deterioration of people’s living environment in the “Three-North” areas have been effectively restrained. The people in the desert area are getting rid of poverty and living a healthy life. In the new era, the “Three-North” project has encountered new demands, new challenges and new opportunities, and it is urgent to achieve a significant transform and upgrade and to improve quality and efficiency. This paper summarizes the current situation of the “Three-North” project construction, focuses on the three-north project general planning and the sixth phase planning and the realization path of the “three transformations”, interprets the strategic planning of the “three iconic battles” in the next ten years, and describes the strategic vision of “New Three-North” in the future. A series of specific policy suggestions are put forward such as strengthening institution and capacity building , demonstration zone planning and strengthening scientific and technological support.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Desert is the typical original ecosystem in arid and semi-arid zones of China and is characterized by its unique structure, functions and services. This study, based on the national forestry standard Assessment Criteria of Desert Ecosystem Services in China and the fifth National Desertification and Sandification Monitoring data, first estimated the total value of China’s desert ecosystem services in 2014 to be 4227.9 billion CNY (in 2014 prices), of which, wind break and sand fixation, hydrological regulation, soil conservation, and carbon sequestration consisted of 40.1%, 24.2%, 18.1% and 17.0%, respectively, and biodiversity conservation and landscape recreation together accounted for less than 1%. By eliminating the impacts of price change, the real value of China’s desert ecosystem services was increased by 120.2 billion CNY (in 2014 prices) from 2009 to 2014, of which improvement in wind break and sand fixation service contributed the most (by 47.5%). We tried to measure the equilibrium degree of ecological protection and economic growth by the ratio of ecosystem service value to GDP. The ratios of the provincial regions wholly or partly covered by desert ecosystem all decreased during 2009 and 2014, with a decrease range between 19.4% and 38.8%, which indicates that the speed of desert ecosystem function raising and service enhancement was slower than regional economic growth. The protection and rehabilitation of desert ecosystem needs to be accelerated along with economic growth, thus a higher equilibrium degree of economic growth and function raising and service enhancement of desert ecosystem can be achieved in the northwestern arid and semi-arid regions in China.
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