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.
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
5.
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。
6.
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
7.
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
8.
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
9.
Soil Quality Evolvement Mechanism of Sand-Fixing Forests in the Area of Yulin in Maowusu Sandland;
榆林毛乌素沙地固沙林地土壤质量演变机制
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.
Research on Models and Benefit of Agroforestry Ecosystem Management in Yulin Sandy Land;
毛乌素榆林沙地农林复合经营模式与效益研究
12.
The Study on Construction Principles and Methods of Forest Park in Sandy Areas of Yulin
榆林沙地型森林公园营建理念与手法初探
13.
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
14.
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。
15.
Ecophysiological Adaptive Strategies of Elm (Ulmus Pumila L.) in Hunshandak Sandland
浑善达克沙地榆树的生理生态适应对策
16.
Dynamics,Patterns and Structure of Major Population in Ulmus pumila var. sabulosa Sparse Forest in Hunshandake Sandland
浑善达克沙地榆树种群结构、格局及动态研究
17.
Research of Eco-Economic Forestry Shelterbdlt System of Maowuxu in Yulin Sandy
毛乌素沙地榆林沙区生态经济型防护林体系研究
18.
Study on the Technical Regulations for Pollution-Free-High-Yield Cultivation of Sand Pepper;
榆林沙地辣椒无公害丰产栽培技术规程研究