浅析生态公益林保护和管理

来源 :中国科技博览 | 被引量 : 0次 | 上传用户:gaoxianfeng
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
文章通过对公益林林分的现状与管理状况的分析,提出了建立和完善生态补尝机制等方面的对策。
其他文献
The oxidative polycondensation reaction conditions of 2-[(2-hydroxyphenyliminomethylbenzylidene)amino-phenol] (2-HPIMBAP) has been accomplished by using air O2
The accurate and real-time prediction of network security situation is the premise and basis of preventing intrusions and attacks in a large-scale network. In o
A crude polysaccharide was extracted from Physalis alkekengi L.fruit.HPLC Was used for the component analysis of the polysaccharide.The results indicate that Ph
In this paper the coefficient and law of the size effect of RPC were studied through experiments and theoretical analysis. The size-effect coefficients for the
The flow resistance factors of non-submerged rigid vegetation in open channels were analyzed. The formulas of drag coefficient CD and equivalent Mannings roughn
Semi-synthesis of paclitaxel was achieved in four steps from 10-deacetylbaccatin Ⅲ (10-DAB Ⅲ).The key steps are the regioselective protection at the hydroxyl
To select a proper displacement medium with the purpose of developing ultra-low permeability reservoirs both effectively and economically, three kinds of gases,
A GPS baseline solution model is presented, based on the Empirical Mode Decomposition (EMD), which has the advantage of eliminating the error effects outside th
目的 探讨医原性输尿管膀胱损伤发生原因及防治方法.方法 医原性输尿管膀胱损伤患者47例,男7例,女40例.其中妇产科手术损伤38例、泌尿外科5例、普外科4例. 结果 术中发现输尿
To improve the precision and reliability in predicting methane hazard in working face of coal mine, we have proposed a forecasting and forewarning model for met