mixed shelterbelt是什么意思

网络释义

用法例句

The assessment of soil degradation in successive rotations of Chinese fir plantation and the soil amelioration of mixed plantation of Chinese fir and broad-leaved;

杉木(Cunninghamia lanceolata)连栽地力退化和杉阔混交林的土壤改良作用

Some crosslinking methods for polyvinyl chloride (PVC), including irradiation crosslinking, chemical crosslinking, blending crosslinking, and modifized PVC crosslinking, and their progresses were reviewed.

介绍了聚氯乙烯(PVC)的几种交联方法及其进展,包括辐射交联、化学交联、共混交联和PVC改性交联,重点讨论和对比了用过氧化物、硅烷和三嗪类化合物作交联剂的PVC化学交联,并指出共混交联法是最有前途的PVC交联方法。

Carbon stock and carbon sequestration in mixed forest of Cunninghamia lanceolata and Tsoongiodendron odorum.;

杉木观光木混交林C库与C吸存

Planting technique and benefit analysis of mixed forest by Pinus koraiensis and Juglans mandshurica;

红松胡桃楸混交林营造技术及效益分析

Study on growth of mixed forests of Taiwania flousiana;

秃杉与杉木、木荷混交林林分生长初步研究

【Method】 Using spatial structure parameters of the uniform angle index,mingling and neighborhood comparison index,the spatial structure characteristics of five different shrub transformation models were studied.

【方法】运用角尺度、混交度和大小比数等林分结构参数,对甘肃小陇山全面清理割灌改造华山松(模式1)、油松(模式2)和日本落叶松(模式3)以及带状割灌改造华山松(模式4)、油松(模式5)5种灌木林地改造模式林分的空间结构特征进行了分析。

Three parameters,which are neighborhood pattern,mingling and neighborhood comparison,are used to describe spatial structure of the spruce-fir mixed stands of coniferous and broad-leaved trees in the over-logged forest of Changbai Mountains.

用角尺度、混交度和大小比数3个林分空间结构参数,分析了长白山过伐林区云冷杉针阔混交林的空间结构。

The first one was mingling, which could be used to analyze the spatial distribution and isolation of species in the stands.

利用混交度、大小比数和角尺度等三种结构参数,分析了红松阔叶天然林的空间结构。