1.
Studies on Soil Degradation and Soil Productivity Maintenance Measures for Continuous Cropping Poplar Trees;
杨树连作地力衰退及林地生产力维持技术的研究
2.
Study of the Productivity Coupling Effect of Farmland and Woodland on the West of Songnen Plains;
松嫩平原西部农田与林地生产力耦合作用的初步研究
3.
Effects of Upside Broadleaf Forest on the Productivity of Phyllostachys Heterocycla var. Pubescens Forests of Mountain Areas in Northern Fujian Province;
闽北山地上位阔叶林对毛竹林生产力的影响
4.
Study on the Technology of Forest Vegetation Productivity Monitoring Based on RS and GIS
基于RS和GIS林地植被生产力估测研究
5.
STUDY ON EFFECTS OF SITE PRODUCTIVITY AND PLANTATION PRODUCTIVITY OF EUCALYPTUS UROPHYLLA WITH THE CONTINUOUS-PLANTING ROTATION;
连栽尾叶桉人工林生产力与地力效应的研究
6.
Study on Potential Food Productivity and Population Supporting Capacity of Land in Yulin;
榆林市粮食生产潜力及土地人口承载力研究
7.
Study on land productive potential and population supporting capacity in Yuling Municipality;
榆林市土地生产潜力及人口承载力研究
8.
Forest Eco-economic Productivity and the Development of Forestry Produce;
森林生态经济生产力与林业生产发展
9.
A Study on the Biomass and Productivity of Acacia spp. Plantation on Minnan Mountain;
闽南山地相思人工林生物量及生产力分析
10.
A Study on Long-term Site Productivity of Different Forest Types in Jiulongshan Mountain;
九龙山不同森林类型立地长期生产力研究
11.
Study on the Effects of Enclosing and Transferring on Grassland Productivity in Xilinguole;
围封转移对锡林郭勒盟草地生产力影响研究
12.
Relationship Between Wood Productive Cycle and Asset Price of Forestland;
林木生产周期与林地资产价格的关系
13.
Promoting the Forest Right System Reform The Development of Forestry Productivity
推进林权制度改革 发展林业生产力
14.
Assessing the Impact of Cultivated Land Change on Grain Productive Capacity:A Case Study in the Central and Western Regions of Jilin Province;
耕地变化对粮食生产能力的影响评价——以吉林中西部地区为例
15.
Study on Productivity and its Formation Mechanism of Grassland Subsystyem of Forest Ecosystem in Sub-alpline Gongga;
贡嘎山亚高山森林生态系统草地亚系统生产力及形成机制研究
16.
large robust epiphytic ferns of tropical forest and scrub; Africa and Asia and Australia.
生长于热带森林和丛林地带的大而生命力强的附生蕨类植物；产于非洲、亚洲和澳大利亚。
17.
The productivities of temperate woodlands and shrublands appear to be mostly between 250 and 800g/??year.
温带的疏林地和灌木群落的生产力多数在250-800克／?撸0年范围内。
18.
Studies on Potential Land Productivity of Hippophae rhamnoides L. for Fuel Wood and Water and Soil Conservation in Hilly Aea of the Loess Plateau
黄土丘陵区沙棘水土保持薪炭林土地生产潜力研究