林分质量

最后按得分多少评定林分质量优劣.并举实例说明。

At last . forest quality can be evaluated according to how many points it scores . and illustrate with example .

由于长期不合理的开发和乱砍滥伐，我国红树林面积急剧减少，林分质量和防护效能不断下降。

Due to the long time deforestation , mangrove forest area in China dropped sharply , and forest quality and protective efficacy has been declined .

叶面积指数（LAI）是群体结构的重要参数，也是衡量林分质量的重要指标。

Leaf area index ( LAI ) is an important parameter in plant population structure research , and of significance in the estimation of stand quality .

不同整地方式对林分质量的影响

Effect of Different Mode of Soil Preparation on Stand Quality

冷杉林木腐朽程度是冷杉林分质量变化的重要标志。

The rotten degree of fir trees is an important sign of quality of Abies forest .

由于长期人为干扰，我国红树林出现面积减少、林分质量下降、防护功能衰退等问题。

Because of long-term human damage , the mangrove area reduced , stand quality decreased , and protective effects declined .

结果表明，帽儿山地区天然次生林的演替正在陆续进入硬阔叶林阶段，林分质量逐渐提高。

The result showed that the natural secondary forest is entering the stage of hard broadleaf forest whose quality is becoming higher .

如何恢复林分质量偏低的次生林是森林可持续经营面临的迫切任务。

So , how to recover the low-quality secondary forest is the stringent problem faced with the sustainable development of forest for us to solve .

基于低碳经济的林分质量改造分析&以云南省思茅区中低产林改造项目为例

Study on Forest Stand Quality Improvement by Low Carbon Economy Development Model : A Case Study on Low Productivity Forest Stand Transformation in Simao District of Yunnan Province

为了改变树种结构单一，林分质量差，水土流失比较严重的局面，必须加快生态公益林建设。

Non-commercial forest construction should be sped up in order to improve the situation of unitary species composition , poor quality of standing forest , and severe soil erosion .

分析表明，采笋直接影响蓄竹质量、林分质量，适度间伐可优化方竹林分的年龄结构、径级结构。

Results showed that harvesting shooting technique directly affects the quality of bamboo stands and moderate intermediate cutting can optimize the age structure and diameter structure of remaining stands .

优良种子是提高林分质量的重要保障，因此，母树林经营在林业可持续发展中起着重要作用。

Fine quality seed is a significant gurantee to improve forest stands . In this sense , seed production stand management plays an important role in sustainable development of forestry .

大力发展优良乡土阔叶林是提高我省林分质量、生态功能等级和增加优质森林资源的最直接最有效途径。

Exert great efforts to develop superior indigenous broad leaved forest is very important . It is the most direct and effective way to improve the forest quality and ecological function class , and increase the high quality forest resource .

因此，合理保护与开发利用好现有杂灌林，不仅是提高湖北省、宜昌市乃至全国现有林分质量和林地产出率的有效途径，而且还为我国林业产业建设提供了广阔的空间。

Therefore , rational protection and developmental utilization for current existing miscellaneous shrub forest can not only promote existing forest stand quality and effective way of forest land output rate , but also provide widespread space for forest industry in China .

本研究认为目前延安生态环境存在的主要问题有：森林植被差，林分质量偏低且分布不均，水资源严重短缺，水土流失极为严重等。

The main existing problems of ecological environment in Yan ' an : forest vegetation has a low coverage . the forest stand quality is not good enough and misdistribution . A serious shortage of water resources , soil erosion is serious and frequent natural disasters .

基于空间结构单元的间伐和补植可有效提高林分景观质量，改善林分空间结构。

The thinning and replanting based on structure unit can improve forest landscape and structure effectively .

根据生长势将油松、侧柏的幼树划分成5种类型，以幼林中健壮幼树的百分比来评价林分的质量。

Evaluates the stand quality by percent of vigorous young trees of Chinese pines and Chinese arborvitae .

光照、风速、温度、相对湿度都会在不同程度上影响林分空气质量。

Light intensity , wind speed , temperature , relative humidity had different affecting degree on air quality of bamboo stands .

祁阳县油茶林分结构和质量状况的研究

Studies on Forest Structure and Quality of Camellia Oleifera in Qi Yang County

顺德森林改造区不同林分土壤环境质量研究

Study on the Soil Environmental Quality of Forest Rehabilitation in Shunde , Guangdong Province

苏南丘陵不同林分类型土壤质量评价

Soil quality assessment of different forest stands in the hilly region of southern Jiangsu province

21世纪要实现森林经营由木材生产到森林生态文明建设的转变，各地区不同林分土壤肥力质量评价显得尤为重要。

In the twenty-first century , to achieve forest management shift from wood production to ecological civilization construction , evaluation of soil fertility quality under different forest stands in each region is particularly important .

据已有资料分析塔塔加地区土壤动物群落之性质属于高山针叶林土壤动物类型。苏南丘陵不同林分类型土壤质量评价

According to the previous study , the soil animals in Ta-Ta-Chia belong to the Alpine coniferous soil animal type . Soil quality assessment of different forest stands in the hilly region of southern Jiangsu province

研究表明：（1）相同造林密度的林分，随着立地质量的降低，林分的市场收入价格和成本价格逐渐降低，林龄越大，各立地等级间价格差异越明显。

The result show : ( 1 ) With decline of site grade , market income price and cost price of stand which have same planting density gradually fall . The higher stand age , the bigger diversity of stand price of different site grade ;

现有油茶林分生长发育不良、林分质量较差。

The existing camellia forest have a poor quality in growth and development .

对林相破碎、生产力低的林分加大抚育力度，提高林分质量和效益，同时调整采伐方式。

Measurement is made to forbid cutting , to enforce the plantation , to increase the forest quality and benefit , and adjust the cutting methods .

科学的森林抚育，可以有效改善林分环境，促进林木生长，提高林分质量，增强森林生态功能，使森林更好地发挥经济、生态和社会效益。

The scientific forest tending can improve stand health conditions , improve the quality of trees , enhance forest protection to better play the economic , ecological and social benefits of forests though forests cultivation .

同时，针对于加强项目林分的后期经营管理，对提高林分生长质量提出了具体的措施和建议。

Moreover , aiming at strengthening the future management of stand of project forest , concrete proposals and measures for improving quality of stand growth are also presented .

林分间伐后，林分总的生物量有所降低，但是提高了林分质量；

Forest is intermediately cut , its total biomass will be decreased , but the forest quality will be raised ;