【摘 要】
:
近些年来,我国对森林采伐作业的执行力度变得越来越大,从传统的劳动力采伐发展到了今天的高度现代化采伐作业。现代化的采伐虽然在一定程度上节约了人力资源和物力资源,但同
论文部分内容阅读
近些年来,我国对森林采伐作业的执行力度变得越来越大,从传统的劳动力采伐发展到了今天的高度现代化采伐作业。现代化的采伐虽然在一定程度上节约了人力资源和物力资源,但同时对森林的生态环境造成了一定的影响。本文主要通过当前现代化才发作业给环境带来的不利影响进行阐述并对采取相应的环境保护技术措施作出分析。
In recent years, the enforcement of forest harvesting operations in our country has become more and more large, from the traditional labor force logging to today’s highly modern logging operations. Although logging has saved human resources and material resources to a certain extent, at the same time it has also had some impacts on the ecological environment of forests. This article mainly expounds the negative impact of homework on the environment through current modernization and analyzes the corresponding technical measures for environmental protection.
其他文献
Polymer field-effect transistors operated in the n-channel model with a top-gate/bottom-contact are processed using a solution method.The transistor performance
This work focuses on how to maintain a high-energy orbit motion of a bistable oscillator when subjected to a low level excitation.An elastic magnifier(EM) posit
粤大记 ,明郭撰.关于 粤大记 成书的时间,郭自序云:“其事断自万历,丙申以前其未悉者,伺采而续入之.”万历丙申,即万历二十四年(1596),可以认为,郭称自己的 粤大记 成书于万历二十
A novel silicon-on-insulator(SOI) power metal-oxide-semiconductor Held effect transistor with an interface-gate(IG SOI) structure is proposed,in which the trenc
本文通过对林业产业受林业技术的影响进行深入的探究,分析其目前我国林业技术在林业产业的应用现状,并分析林业产业受林业技术的影响,旨在促进林业技术在林业产业中的推广和
消费者和供应商是购买活动的两个侧面,缺少任何一方,购买活动便不会发生。要购买,还得有顾客对产品和供应商的信任,因此,如没有游客的信任,便不会有旅游业的发展。在奔向新的千年的
A nonlinearity measurement of the charge-coupled device(CCD) array spectrometer using flux addition and comparison method is described. The light with various c
海滨旅游是以海洋生态环境为依托,以“三S”(海水、阳光、沙滩)为特色,以山海观光、海鲜美食、滨海运动、文化娱乐、休闲疗养为主要内涵的现代旅游活动。自从1730年英国的斯盖堡拉开辟
在灌区水利工程中,数量众多的中小型水闸,分布在输水渠、排水沟及自然河道上,担负着进水闸、节制闸和退水闸的功能。它们的状态是否良好,直接关系到整个灌区水利工程体系能
通过对 F2 1 5 断层水泥化学材料复合灌浆试验成果的分析研究 ,进一步论证了试验设计方案、工艺及处理标准的合理性 ,为确定类似三峡工程 F2 1 5 断层性状的处理措施提供了依