1)productivity[英][,pr?d?k't?v?ti][美]['prɑd?k't?v?t?]林地生產力
1.The results show that: The growth of poplar trees and the plantations productivity were more increased on SDI than on normal irrigation (NI).本文研究了北京沿河沙地地下滴灌條件下楊樹人工林樹木速生豐產機制，并對地下滴灌優化灌溉制度進行了初步的探索，結果表明：與常規灌溉相比，地下滴灌能大大增加樹木的生長量、提高林地生產力。
2.pubescens leaf characteristic,distribution and photosynthetic character,its culm structure and productivity are studied,the interior law and mechanism are discussed,expecting to provide theory basis for the scientific fertilization of bamboo forest.本文以不同時期施肥處理下的毛竹林為對象,根據毛竹生長節律,對毛竹葉片的大小、重量、葉綠素含量、光合速率等指標進行動態測定,同時測定了毛竹的稈形結構和生物量,研究施肥對毛竹葉片特征及分布、竹葉光合特性、毛竹稈形結構及林地生產力的影響,探討了竹林施肥增產的內部規律及機制,為毛竹林科學施肥提供依據。
英文短句/例句
1.Studies on Soil Degradation and Soil Productivity Maintenance Measures for Continuous Cropping Poplar Trees;楊樹連作地力衰退及林地生產力維持技術的研究
2.Study of the Productivity Coupling Effect of Farmland and Woodland on the West of Songnen Plains;松嫩平原西部農田與林地生產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;閩北山地上位闊葉林對毛竹林生產力的影響
4.Study on the Technology of Forest Vegetation Productivity Monitoring Based on RS and GIS基于RS和GIS林地植被生產力估測研究
5.STUDY ON EFFECTS OF SITE PRODUCTIVITY AND PLANTATION PRODUCTIVITY OF EUCALYPTUS UROPHYLLA WITH THE CONTINUOUS-PLANTING ROTATION;連栽尾葉桉人工林生產力與地力效應的研究
6.Study on Potential Food Productivity and Population Supporting Capacity of Land in Yulin;榆林市糧食生產潛力及土地人口承載力研究
7.Study on land productive potential and population supporting capacity in Yuling Municipality;榆林市土地生產潛力及人口承載力研究
8.Forest Eco-economic Productivity and the Development of Forestry Produce;森林生態經濟生產力與林業生產發展
9.A Study on the Biomass and Productivity of Acacia spp. Plantation on Minnan Mountain;閩南山地相思人工林生物量及生產力分析
10.A Study on Long-term Site Productivity of Different Forest Types in Jiulongshan Mountain;九龍山不同森林類型立地長期生產力研究
11.Study on the Effects of Enclosing and Transferring on Grassland Productivity in Xilinguole;圍封轉移對錫林郭勒盟草地生產力影響研究
12.Relationship Between Wood Productive Cycle and Asset Price of Forestland;林木生產周期與林地資產價格的關系
13.Promoting the Forest Right System Reform The Development of Forestry Productivity推進林權制度改革 發展林業生產力
14.Assessing the Impact of Cultivated Land Change on Grain Productive Capacity:A Case Study in the Central and Western Regions of Jilin Province;耕地變化對糧食生產能力的影響評價——以吉林中西部地區為例
15.Study on Productivity and its Formation Mechanism of Grassland Subsystyem of Forest Ecosystem in Sub-alpline Gongga;貢嘎山亞高山森林生態系統草地亞系統生產力及形成機制研究
16.large robust epiphytic ferns of tropical forest and scrub; Africa and Asia and Australia.生長于熱帶森林和叢林地帶的大而生命力強的附生蕨類植物；產于非洲、亞洲和澳大利亞。
17.The productivities of temperate woodlands and shrublands appear to be mostly between 250 and 800g/??year.溫帶的疏林地和灌木群落的生產力多數在250-800克／?擼0年范圍內。
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黃土丘陵區沙棘水土保持薪炭林土地生產潛力研究
相關短句/例句
natural soil productivity of forest land林地自然生產力
3)current soil productivity of forest land林地現實生產力
4)stand productivity林分生產力
5)forest productivity森林生產力
1.Spatial pattern and variance of forest productivity based on remote sensing and GIS;基于遙感和GIS的森林生產力空間格局與分異
2.in order to enhance way in forest productivity in Hubei province based on documents collected and sorted out during II type survey achievement in the third forest resource in Hubei Province through analysis on current status of the forest productivity, which offers.筆者在收集、整理我省三次森林資源二類調查成果資料的基礎上,通過對森林生產力現狀的分析,初步提出了加強管理,全面保護,重點改造低產、劣質林,科學合理的撫育間伐,充分利用成、過熟林等提高我省森林生產力的途徑,為科學決策提供參考。
3.The established models in which annual precipitation was incorporated as the principal variable indicate a very closely correlation between forest productivity and its corresponding climatic factors,allowing to simulate distribution pattern of actual forest productivity effectiv.根據中國不同地理區森林生產力和氣候環境變量的數據構建了中國森林氣候生產力模型，以此為基礎研究了氣候變化對中國森林生產力的影響。
6)tree productivity林木生產力
延伸閱讀
林地生產力林地生產力productivity of forest land }indl shengehanli林地生產力(I)roductivity of forest場川」)林業用地或有林地的總體生產能力。這是一個綜合評價森林資源生產力的概念。它包括兩方面的內容:一是林業用地利用率;二是有林地的生產力。 林業用地包括有林地、疏林地、灌木林地、未成林造林地、苗圃用地、宜林荒山荒地、采伐跡地、火燒跡地、宜林沙荒地以及林區內林業生產設施和建筑物用地等。林業用地利用率取決于有利用價值的土地中能夠用于發展林業的土地數量。據“七五”森林資源清查，中國林業用地面積為26289萬公頃，占國土總面積的27.4%，林業用地面積較大，但林業用地利用率較低，有林地只占林業用地的50.05%，遠遠低于世界林業發達國家的水平。美國、德國、日本、芬蘭、朝鮮等國的林地利用率都在90%以上。即使在中國重點林區，它們的林地利用率也低于世界林業發達國家的水平，如吉林為77.5%、黑龍江73 .6%、福建68 .8%、云南63 .7%、湖南55 .1%等。 有林地生產力通常指單位面積上林分立木蓄積量的高低，反映了一個地區或一個國家森林資源的生產力水平。廣義還包括經濟林和竹木的生產力。這是由子有林地由林分、經濟林、竹林構成。目前中國有林地面積為13370萬公頃，其中林分面積n 370萬公頃、蓄積量10 137萬立方米，平均每公頃蓄積量89立方米。(李飛)
