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An overview of the “Three-North” Shelterbelt project in China 被引量:14
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作者 LI Miao-miao liu an-tian +3 位作者 ZOU Chun-jing XU Wen-duo Hideyuki SHIMIZU WANG Kai-yun 《Forestry Studies in China》 CAS 2012年第1期70-79,共10页
The "Three-North" Shelterbelt is the largest and most distinctive artificial ecological engineering project in China. It has been conducted since November 25, 1978 in the "Three-North" (i.e., Northeast China, Nor... The "Three-North" Shelterbelt is the largest and most distinctive artificial ecological engineering project in China. It has been conducted since November 25, 1978 in the "Three-North" (i.e., Northeast China, North China and Northwest China) regions. In this study, the background and the essential benefits of the "Three-North" Shelterbelt project are summarized. The basic status and future development of the "Three-North" Shelterbelt project are also studied. As well, we tried to discuss the problems existing in the current shelterbelt system and the strategies to conduct this ecological project rationally. 展开更多
关键词 "Three-North" Shelterbelt project essential benefits species adaptability
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Intraspecific diversity: adaptive differentiation of Picea mongolica W. D. Xu ecotypes 被引量:2
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作者 liu an-tian ZOU Chun-jing +3 位作者 ZHANG Chao ZHENG Yuan-run Hideyuki SHIMIZU XU Wen-duo 《Forestry Studies in China》 CAS 2011年第3期189-197,共9页
Picea mongolica W. D. Xu is an endemic and endangered species which is only found in semi-arid areas of northern China. It has been widely used as an afforestation tree in the establishment of the Three-North Shelterb... Picea mongolica W. D. Xu is an endemic and endangered species which is only found in semi-arid areas of northern China. It has been widely used as an afforestation tree in the establishment of the Three-North Shelterbelt System for its adaptation to arid soils and as a virescent tree in urban gardens and streets for its beautiful shape. Due to different microenvironments, P. mongolica populations may differentiate into many ecological groups with different adaptive abilities. Long-term adaptation to a dry environment makes P. mongolica differentiate into different ecotypes. Typical ecotypes are P. mongolica f. purpurea (Fp), P. mongolica f. rubra (Fr) and P. mongolica f. viridis (Fv). Our results show that cone size is clearly not uniform among different ecotypes; the largest cones are found in the Fv ecotype and the smallest in Fp. There were also distinct differences between these ecotypes in terms of height and length of squama. At the molecular level, the zymograms of peroxidase and lipase prove the existence of different ecotypes in P. mongolica. The results are useful for investigating and managing this rare spruce species in China. 展开更多
关键词 Picea mongolica W. D. Xu intraspecific diversity adaptive differentiation ECOTYPE
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