shelterbelts相关论文
To examine changes in surface soil quality over time in Populus×xiaohei shelterbelts,we collected soil samples from......
Changes in and evaluation of surface soil quality in Populus × xiaohei shelterbelts in midwestern He
To examine changes in surface soil quality over time in Populus × xiaohei shelterbelts, we collected soil samples from ......
Spacing interval between principal tree windbreaks--Based on the relationship between windbreak stru
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
以北京市大兴县北藏乡为例,根据防护林学和景观生态学的原理,结合野外调查与地理信息系统Citystar和遥感等技术,从林带和林网两个......
依据林带的特殊性,结合树木生长发育和林带结构变化规律,将林带生长阶段划分为幼龄期、中龄期(速生期)和防护成熟期3个时期;采用径级离散......
山西北部地区处于毛乌素沙漠前沿,是暖温带落叶阔叶林向温带干旱草原的过渡带。20世纪50-60年代当地营造了大面积的小叶杨(Populus s......
在各树种不同配置方式试验研究的基础上,提出了大面积农田林网杨树与其它树种的多样性与稳定性混交型构架,建立了各种混交林带. 试......
民勤绿洲农田防护林保护下的小麦产量均有胁地区和增产区的产量分布规律:胁地区为平产区产量的67.3%,增产区比平产区产量高3.3%;大......
Evaluating the Role of Shelterbelt in Vegetation Development in a Semi Arid Zone of Yobe State, Nige
This study evaluates the role of shelterbelts on the development and dynamics of vegetation in relation to livelihoods i......
新疆兵团防护林标准化示范团场建设项目,共涉及全兵团南北疆13个师的22个示范团场,该项目2010年年底立项,2011~2013年完成.在此期间......