华北落叶松

c.多酚氧化酶与华北落叶松抗虫能力及受害后恢复生机的能力有关。

Thirdly , polyphenoloxidase has relation to the pest resistant ability and recover its life after suffering injury of LPR .

结果表明：（1）SOD、POD、CAT作为保护蛋白有利于提高华北落叶松的抗高温能力。

The results shows , ( 1 ) As a kind of protection protein , the enzyme of SOD 、 POD and CAT can increase heat resistance .

该文简述了Richards生长方程的可塑性，以毛白杨、华北落叶松、刺槐与斑克松的生长资料，讨论了描述林木生长过程的适用性。

The growth data of the poplar , larch , black locust , and jack pine are employed to demonstrate the flexibility of Richards equation .

从年平均净碳平衡来看，华北落叶松人工林在成林后是一个明显的碳汇，年平均净碳平衡在1.0t？hm-2左右。

From the annual net carbon balance point of view , larch plantation was obviously carbon source , annual net carbon balance was about 1.0 t ? hm-2 .

华北落叶松树干主要营养元素的空间分布

Spatial Distribution for Main Nutrient Elements in Bole of North-China Larch

华北落叶松鞘蛾发育进度研究

A Study of the Development of Larch Case-bearer , Coleophora Sinensis

不同林分密度桉树幼林抗风性比较研究华北落叶松人工幼林林分密度与生物量的关系

Study on Wind-resistance of Young Eucalypt Plantation at Different Stand Density

华北落叶松人工林林缘草本可燃物研究

Study on the Herb fuels of the edges in the plantations of

华北落叶松凋落物分解过程中各养分元素随季节变化明显。

Litter decomposition of the nutrient elements changed significantly with the seasons .

华北落叶松人工林根系分布及根系生物量研究

A Research on the Tree Root Distribution and Biomass of North-china larch

华北落叶松人工幼林林分密度与生物量的关系33年生格氏栲人工林与天然林群落特征比较

Comparison of community characteristics between 33-year-old plantation and natural forest of Castanopsis kawakamii

结果表明：不同药剂处理对华北落叶松幼苗生长有不同的作用。

The results showed that the different medicaments were of the different action .

华北落叶松鞘蛾生物学特性及防治技术研究

Study on Biological Properties and Prevention Techniques of Northern China 's Larch Casebearer

华北落叶松幼苗生长与地温的关系

Relationship between the Growth of Larch Seedlings and Temperature

华北落叶松人工林叶内营养元素含量的变异

The variation of nutrient contents in needles of prince rupprecht ′ s larch plantation

华北落叶松受鞘蛾危害后补偿反应的研究

Study on the Compensation Reaction of Northern China 's Larch after Being Damaged by Casebearer

来源于不同地区，不同世代的华北落叶松无性系，其结实量的无性系效应均达到了显著和极显著水平，无性系间结实能力的差异是客观存在的。

Although coming from different regions and clones , the clones effects were mightily notability , so the diversity existed impersonally .

不同林龄的华北落叶松人工林中，灌木层和草本层的生物量随着林龄增大呈现先下降后上升的趋势。

Plantation , the biomass in the shrub layer and herb layer were decreased at first and then increased with increasing stand age .

本文根据华北落叶松分布和生产力的变化规律，确定了其气候生态指标和效值。

In this paper , according to principles of Prince Rupprencht 's distribution and productivity , it 's climatic ecological indices were determined .

本文论述了如何以效应生长量分析为基础，通过对华北落叶松人工林间伐林分的研究，建立与间伐有关的系列断面积收获预估模型。

A yield model for sequential estimation of basal area in stand in relation to thinning cut was established by analyzing the response increment .

对华北落叶松鞘蛾在山西省的生活史及其生活习性作了介绍，并提出了综合防治措施。

This paper introduces the life history and habits of Northern China 's larch casebearer in Shanxi province , and puts forward some comprehensive preventive measures .

结果表明：华北落叶松直干台形冠采穗树，插条产量高，生根效果好；

Results show that : ( 1 ) High production of well rooted cuttings can be realized by keeping straight stem and platform crown of the cutting collecting trees ;

研究了引种在秦岭南坡的华北落叶松人工林对土壤理化性质影响。

Effect of introduced larch forest on soil was studied by comparing physical and chemical characteristic of soil among grassland , pine and larch growing in the similar conditions .

在黄土高原丘陵区，引种的4种落叶松生长正常，但受水分限制，生长缓慢，其生长量大小排序为：华北落叶松>日本落叶松>兴安落叶松>长白落叶松；

The 4 tree species in genus Larix introduced into the Loess Hilly Region in northwest China grew normally though the growth rate was small because of water deficiency .

在速生时期应注意对华北落叶松人工林的管理，特别是在10~20年生时，应加强水肥管理、调控林分密度，适度间伐以培育高大林木。

Artificial forest , especially in 10 to 20 years , should strengthen water and nutrient management , adjustment stand density as well as moderately thinning to foster tall trees .

在华北落叶松人工林三个碳库中，土壤碳储量、生物碳储量、木质林产品碳储量对总碳储量的贡献率的均值分别为77%、17%和6%。

The contribution rates of soil carbon storage , biomass carbon storage and woody forest products carbon storage to the total were 77 % , 17 % and 6 % respectively .

结果表明：华北落叶松同相似条件下天然华山松林相比，对土壤理化性状没有明显的不良影响。

Results show that unfavorable effect of the larch forest on soil had not been discovered when comparing with natural pine forest , worse characteristics of soil developed when comparing with grassland .

文中分析了树干、枝、叶、叶丛及球果等拓扑结构并给出了华北落叶松形态结构参数表。

The paper also analyzes the geometrical and topological structures of the whole tree , branche , leaf , leaf bunches and cone , and get the table of morphological structural parameters .

研究表明，封禁有利于提高华北落叶松胸径、树高和材积的生长量及林分郁闭度。

For the implemented management measures , the results show that , the prohibition is beneficial to improve the Larix pricipis ' DBH increment , the height growth , volume growth and canopy density .

华北落叶松该酶年变化规律，各器官不完全相同，但一年中均有两个相同的明显高峰，是林木抗寒性基础条件之一。

In the bodies of LPR , the yearly changing law of the ferment in each organ is not completely the same , but they all have two same notable peaks in one year .