Main Participants: LIU Guangquan, BAI Yingfei, TU Xiaoning, AI Ning, WEI Tianxing, CUI Jiangyong, QI Chunyu, LIU Guangliang, SHANG Jingshi, PUYANG Xuehua, WANG Shuo, DING Xinhui
The water-wind erosion crisscross region in the Loess Plateau is located in the transitional zone among the ecologically fragile middle reaches of the Yellow River, the ecological barrier in the northwest and the sand prevention belt in the Northern China, which features harsh natural conditions, difficult vegetation restoration, severe soil erosion and fragile ecosystem. It is an important part of China’s ecological security strategy of "Two Barriers and Three Belts". With small riverbasin as the unit, the high-efficiency vegetation community experimental demonstration area as the base, and efficiency improvement and value-added industrialization of seabuckthorn as the main theme, the project fortifies prevention project in line with the type of eco-hazard to achieve the optimized allocation and efficient use of natural resources. Through these approaches, a systematic, replicable and easy-to-promote technical solution is formed integrating mountains, rivers, forests, farmlands, lakes, grasslands and deserts, combining regional ecological governance, ecological industry and eco-household project. The solution improves the comprehensive service function and benefit of regional ecosystem, functioning as a technical model and demonstration project of comprehensive control of regional soil erosion, and supports the implementation of the philosophy that lucid waters and lush mountains are as valuable as gold and silver.
· Research on technology for maintaining soil fixation and water conservation function of vegetation. Focusing on the integrated prevention and control of water and wind erosion, the research team mainly studies the following aspects of forest and grass vegetation: types, characteristics of community structure, the causes of low function, and the comprehensive allocation technology to maintain stable soil and water conservation function.
· Research on nature-imitating plantation technology of high-efficiency vegetation. Aiming at improving the ecological function of artificial vegetation, the research team mainly studied the selection of stable vegetation community structure, the analysis of main restrictive factors of vegetation plantation, and the nature-imitating plantation technology of high-efficiency vegetation .
· Research on high-efficiency seabuckthorn forest plantation and industrialization technology. Aiming at improving the ecological and economic function of seabuckthorn forest, the researchers mainly studied the plantation technology of different types of seabuckthorn forest, the key technology for increasing seabuckthorn yield, and the research and development of seabuckthorn industrialization technology.
· Having formed five sets of technical systems, namely, nature-imitating plantation technology of high-efficiency vegetation , key technology for improving quality and efficiency of low-efficiency vegetation, plantation technology of typical high-efficiency seabuckthorn forest, key technology for increasing seabuckthorn forest yield, and key technology of soil improvement and slope erosion prevention for forest and grass vegetation in semi-arid loess area.
· Having made important progress in the study of regional micro-terrain vegetation plantation theory and effect, structural characteristics of seabuckthorn vegetation and influence, theoretical system of forest and grass distribution and plantation, and evolution of vegetation cover at different scales and its coupling with the environment.
· Having built three innovative institutional mechanisms, including the comprehensive management mode of barren hills and slopes contracted by family forest farms, the technical system of reclaimed high-yield gardens of seabuckthorn in open-pit mining areas, and the construction of Chinese herbal medicine bases on the land restored from farmland.
A total of 42.25 km2 of core demonstration area has been constructed, by which the land use output value has increased by 15.0%~65.0%, and the result application has radiated to over 1152.0 km2 of areas at county level. Five 10,000+ mu demonstration zones of concentrated and contiguous comprehensive treatment have been built. In Yan'an City alone, the research outcome has been applied to a total of 2333.33 km2 of area through the experimental demonstrations, technical training and consultation, planning participation, on-site demonstration guidance, comprehensive benefit monitoring, etc. The technical system has been demonstrated and promoted in Yan'an, Yulin and Ordos with broad prospect.
Figure Plant Restoration and plantation technology for deep
planting of container seedlings on steep slopes
