1.
Analysis of Population Characteristics of Ulmus Pumila Sparse Forest in Hunshandake Sandy Land;
浑善达克沙地榆树疏林榆树种群特征分析
2.
IMPACTS OF HUMAN DISTURBANCE ON ELMS-MOTTE-VELDT IN HUNSHANDAK SANDLAND
人为干扰对浑善达克沙地榆树疏林的影响
3.
Studies on Regenerationt of Grassland with Sparsed Elm in Keerqin Sandy Land
科尔沁沙地榆树疏林草原及其封育更新研究
4.
Studies on Characteristics of Trees and Grass Ulmus Pumila L.var.sabulosa Woodland of Sanggendalai in Hunshandake Sandy Land
浑善达克沙地桑根达来地区榆树疏林林草特征的研究
5.
Effect of human activities on soil environment and plant species diversity of elm sparse woods
人类活动对榆树疏林土壤环境和植物多样性的影响
6.
Species Diversity and Arbor Population Distribution Pattern of Ulmus Pumila L Scattered Grassland of Horqin Sand
科尔沁沙地榆树疏林草地物种多样性及乔木种群空间格局
7.
2) There were no enough fodder for livestock in the heavy disturbed grassland and they had to eat elm seedlings and young elms, this result in further sharp decrease of the quantity of seedlings and young elms.
2． 环境异质性和水分时空分布格局是榆树疏林形成的主要原因。
8.
Significance of the Elm Woodlands in Maintaining the Biodiversity of Temperate Grassland Eco-regions
榆树疏林对维持草地生态区域生物多样性意义的初探
9.
1) The elm (Ulmus pumila L.) population is declining in number and in age.
有以下主要内容: 1)浑善达克沙地榆树疏林种群在人为干扰下处于衰退期。
10.
The Drought-Resistance Characteristics of Four Different ELM Tree Seedlings in Yulin Region
榆林地区4种榆属树种苗期抗旱特性的研究
11.
Study on Index Forecast about Yushulin Oil Field Development;
榆树林油田开发指标预测方法的研究
12.
Study on Oil Gathering Technology of Single Electrothermal Pipe of Yushulin Oilfield
榆树林油田单管电加热集油工艺研究
13.
The Harmonious Application of Native Tree and Exotic Tree in Yulin Sandy Region
榆林沙区乡土树种与外来树种的和谐应用
14.
Geological Evaluation of Movable Reserve in Yushulin Oilfield;
榆树林油田扶杨油层可动用储量地质评价研究
15.
Different Study of Mechanism That Blackland Degenerated in Yu Shu County Jilin Province;
吉林省榆树市黑土退化机理的差异性研究
16.
Research on Experimental Evaluation and Application of Technology of Paraffin Treatment and Control in Yushulin Oilfield
榆树林油田清防蜡技术室内评价与应用研究
17.
A Study on Evaluation and Application of Well Pattern on Fuyang Reservoir in Yushulin Region
榆树林特低渗透扶杨油层井网评价与应用研究
18.
Reaesrch on Casing Damage Affected by Reservoir Development of Yushulin Oilfield
榆树林油田开发动态对套损的影响研究