|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Vegetation reconstruction of Bronze Age by using microscopic structure of charcoals显示文摘The microscopic structure of charcoals was determined in two sites of Bronze Age, Chifeng area by using the scanning electronic microscope. The results showed that these charcoals are all timbers of Mongolian oak (Quercus mongolica). It has powerful climatic indicative significance. Based on the assemblage of pollen composition, their eco-climatic index and character of community, the vegetation reconstruction of Bronze Age was obtained. The reconstruction showed that the zonal vegetation was Mongolian oak forest and Chinese pine forest in the loess hills in the Chifeng area, which suggested that the climatic condition was warmer and wetter at that time than present time. | CUI Haiting LI Yiyin HU Jinming YAO Xishen LI Yang | 2002 | Chinese Science Bulletin2002，47，23： | 6 |
| 2 | The origin of remnant forest stands of Pinus tabulaeformis in southeastern Inner Mongolia显示文摘 | Hongyan Liu Haiting Cui Pengtao Yu Yongmei Huang | 2002 | Plant Ecology2002，，2： | 1 |
| 3 | The surface pollen of the woodland-steppe ecotone in southeastern Inner Monglolia, China 显示文摘 | Liu Hongyan Cui Haiting Pott Richard | 1999 | Review of Palaeobotany and Palynology1999，105，34： | 1 |
| 4 | The origin of remnant forest stands of Pinus tabulaeformis in southeastern Inner Mongolia显示文摘 | Hongyan Liu Haiting Cui Pengtao Yu Yongmei Huang | 2002 | Plant Ecology2002，，2： | 1 |
| 5 | The surface po-llen of the woodland-steppe ecotone in southeastern Inner Mongolia,China显示文摘 | Hongyan Liu Haiting Cui Richard Pott | 1999 | Review of Palaeobotany and Palynology1999，105，： | 1 |
| 6 | Land cover dynamics of different topographic conditions in Beijing,China显示文摘Topographic conditions play an important role in controlling land cover dynamic processes.In this study,remotely sensed data and the geographic information system were applied to analyze the changes in land cover along topographic gradients from 1978 to 2001 in Beijing,a rapidly urbanized mega city in China.The study was based on five periods of land cover maps derived from remotely sensed data:Landsat MSS for 1978,Landsat TM for 1984,1992,1996 and 2001,and the digital elevation model(DEM)derived from 1:250,000 topographic map.The whole area was divided into ten land cover types:conifer forest,broadleaf forest,mixed forest,shrub,brushwood,meadow,farmland,built-up,water body and bare land.The results are summarized as follows.(1)Shrub,forest,farmland and built-up consist of the main land cover types of the Beijing area.The most significant land cover change from 1978 to 2001 was the decrease of the farmland and expansion of the built-up area.Farmland decreased from 6354 to 3813 km^(2)in the 23 years,while the built-up area increased from 421 to 2642 km^(2).Meanwhile,the coverage of forest increased from 17.2%to 24.7%of the total area.The conversion matrix analysis indicated that the transformation of farmland to the built-up area was the most significant process and afforesta-tion was the primary cause of the replacement of shrub to forest.(2)Topographic conditions are of great importance to the distribution of land cover types and the process of land cover changes.Elevation has an intensive impact on the dis-tribution of land cover types.The area below 100 m mostly consists of farmland and built-up areas,while the area above 100 m is mainly covered by shrub and forest.Shrub has the maximum frequency in areas between 100 and 1000 m,while forest has dominance in areas above 800 m.According to the analysis of land cover changes in different ranges of elevation,the greatest change below 100 m was the process of urbanization.The process of the main land cover change occurred above 100 m was the transformation from shrub to forest.This result was consistent with the vertical change of natural vegetation distribution in Beijing.(3)Slope has a great influence on the distribution of land cover.Farmland and built-up areas are mostly distributed in flat areas,while shrub and forest occupy steeper areas compared with other land cover types.Forest frequency increased with the increas-ing slope.Land cover changes differed from the slope gradients.In the plain area,the land cover change occurred as the result of urbanization.With the increasing of the slope gradient,afforestation,which converts shrub to forest,was the process of the primary land cover change. | WU Xiaopu TANG Zhiyao CUI Haiting FANG Jingyun | 2007 | Frontiers in Biology2007，2，4： | 1 |
| 7 | Vegetation of the wood-landsteppe ecotone in southeastern Inner Mongolia,China显示文摘 | Liu Hongyan Cui Haiting Pott R | 2000 | Journal of Vegetation Science2000，11，4： | 1 |
| 8 | Terminal Pleistocene/Holocene palaeoenvironmental changes revealed by mineral-magnetism measurements of lake sediments for Dali Nor area, southeastern Inner Mongolia Plateau, China显示文摘 | Hongya Wang Hongyan Liu Haiting Cui Niels Abrahamsen | 2001 | Palaeogeography Palaeoclimatology Palaeoecology2001，，1： | 1 |
| 9 | Energy analysis of space solar dynamic heat receivers显示文摘 | Cui Haiting Hou Xinbin Yuan Xiugan | 2003 | Solar Energy2003，74，： | 1 |
| 10 | Terminal Pleistocene/Holocene palaeoenvironmental changes revealed by rrtineralmag netism rneasurments of lake sediments for Daft Nor area, Southeastern Inner Mongolia Plateau 显示文摘 | Wang Hongya Liu Hongyan Cui Haiting | 2001 | Palaeogeography Palaeoclimatoloy Palaeoecoloy2001，170，12： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员