Yichun Area

Characteristics and tectonic setting of late Indosinian I-type granite zone in the Yichun Area

伊春地区晚印支期I型花岗岩带特征及其构造背景

But the poplar tree has grows quickly , is one of Yichun area fast-growing timber wood tree seeds .

而杨树具有生长快、是伊春地区速生用材树种之一。

Application of the Surveying Rock Density in the Research Emplacement Mechanism of Granite Plutons in Yichun Area , Heilongjiang Province

岩石密度测量在黑龙江伊春地区花岗岩体就位机制研究中的应用

The Qianjin magmatite in the Yichun area is located in the central part of the Yichun-Yanshou metallogenic belt which is rich in polymetallic mineral resources of Mo , Cu , Pb , Zn , Ag .

伊春前进地区地处伊春延寿成矿带中部，区内Mo、Cu、Pb、Zn、Ag等多金属矿产资源丰富，且成矿与岩浆活动关系密切。

Through the studies on density features of granite body in Yichun area , the authors consider that the emplacement mechanism of late Ordovician granite are dominated by tectonic extension , and subordinated by balloon swelling , at last it takes place stoping .

通过对伊春地区花岗岩体的密度特征的研究，认为该区晚奥陶世花岗岩体的侵位以构造扩展机制为主，气球膨胀作用为辅，最后发生了顶蚀作用。

The Relationship between Weather Factors and Seedling Production in Yichun Forest Area

伊春林区气象因子与育苗生产的关系

Occurrence and Distribution Regularity of Rodent Damage in Yichun Forest Area

伊春林区主要森林鼠害发生与分布规律

He relations between major weather factors and seedling production are analysed on the basis of data collected from weather stations in Yichun forest area in 32 years .

用伊春林区32年（1958&1990年）的气象资料，分析论证了主要气象因子与育苗生产的关系。

The ecological environment in Yichun national forestry area has harmed to state-owned forest region and long-term sustainable development , and is becoming the main restrictive factors of regional economy and social development .

伊春国有林区生态环境已危及到国有林区长期的可持续发展，并成为区域经济、社会发展的主要限制性因素。

Over the years , Yichun national forestry area have always provided wood for country overload , which made the original forest structure was seriously damaged and stable implement of ecological service function of forest was also affected , whose extensive mode of growth made the ecological environment vulnerable .

多年来伊春国有林区超负荷地为国家输送木材，严重破坏了原有的森林结构，影响森林生态服务功能的稳定发挥，粗放式增长方式致使生态环境呈现出脆弱性。

By the end of 2006 , the reform had carried out throughout the country , so did the Yichun national forest area in Heilongjiang provinces , which breaks the operation and management system of state-run ownership and running manner in the state-owned forest areas more than 50 years .

在集体林权制度改革即将在全国全面推开之际，以黑龙江伊春国有林区为试点的林权制度改革也同时开展，打破了50多年来国有林区国有国营的经营管理体制。