Forest-steppe ecotone是什么意思

网络释义

用法例句

The temporal-spatial evolution and heterogeneity of forest carbon in Guangzhou,China;

广州森林碳储量时空演变及异质性分析

Dynamics of atmospheric NO_2 concentration in a forest eco-system at Yingtan, Jiangxi Province;

江西鹰潭地区森林生态系统NO_2浓度变化规律

Study on the function of forest in filtering wet deposition of pollutants;

森林对污染物湿沉降过滤作用的研究

Optimization of forest policy in China from the point of green accounting for forests;

从森林绿色核算看我国林业政策的优化

Cost-effective analysis of forestry clean development mechanism projects;

森林清洁发展机制项目的经济性评价

This paper analyzes the historical reason of extensive management about Chinese forestry,and then the author reviews the course of the afforesting project on a large scale for over 50 years,proposes that it needs to establish the scientific theory that could guide forestry construction.

分析了造成中国森林粗放式经营的历史原因,回顾了50多年来大规模造林工程的历程,提出在森林经营中需要确立一个科学的指导林业建设理论,对稳定林业建设方针和实行集约化森林经营的重要性,介绍了生态经济理论应用于林业的生产实践和中国林业区划在林业发展战略研究中的作用,指出林业现代化的必由之路是实行集约化经营,实行森林经理是重要手段,重点国有林区应该由中央政府直接管理。

Heilongjiang is a rich agricultural province in China, and the forestry service function is important for the crop production in major food-producing provinces and regions.

黑龙江是农业大省,森林的多种服务功能对主产区粮食生产具有重要意义。

Study on the protection and development of regional forest resources——A case of Ji'an City Jiangxi Province;

区域森林资源保护与发展研究——以江西吉安市为例

Application of "3S" technology in forest resources planning and design inventory of State-run Yachang Forest Farm in Guangxi;

“3S”技术在广西国有雅长林场森林资源规划设计调查中的应用研究

A Multi-Tiers WebGIS of Forest Resources Based on ArcGIS Server 9.0 and J2EE Technology;

基于ArcGIS Server 9.0和J2EE构建多层结构的森林资源WebGIS