生态补偿空间选择与分配的重要性及研究动态     

谢剑斌  何承耕  钟全林 《福建地理》2013,(3):29-34

指出生态补偿标准的关键或实质是空间选择与分配问题,并根据国内生态补偿项目运行的独特环境,围绕补偿效益这一内在目标,分析生态补偿空间选择与分配的重要性;论述与比较了国际与国内的相关研究动向;结合一个生态公益林补偿配置的研究框架,指出了政府主导型生态补偿空间优化配置的解决方向．  相似文献   

湖北沉湖湿地生态补偿机制的浅析     

陈君  赵柒新 《湿地科学与管理》2013,(2):63-65

湿地生态补偿是指由湿地环境受益主体补偿给湿地生态服务的生产者与提供者。沉湖湿地自然保护区是武汉市目前唯一的省级湿地自然保护区,是浅湖和沼泽湿地草甸相连续的湿地生态系统。在对沉湖湿地的生态功能和生态补偿必要性分析的基础上,开展了生态补偿的前期调查,对沉湖湿地补偿原则、范围、对象、标准、资金来源等提出一些想法,以供探讨。  相似文献   

Shadow detection and compensation for color aerial images     

Wang Shugen  Guo Zejin  Li Deren 《地球空间信息科学学报》2013,16(3):20-24

A method for shadow detection and compensation for color aerial images is presented. It is considered that the intensity value of each image pixel is the product of illumination function and ground object reflection, and the shadowed regions on the image are mainly caused by the short of illumination, so the information compensation for the shadowed regions should concentrate on the illumination adjustment of concerned area on the basis of the analysis of whole image. The shadow detection and compensation procedure proposed by this paper consists of four steps.  相似文献   

Data fusion technique for multibeam echosoundings     

Huang Motao  Zhai Guojun  Ouyang Yongzhong  Liu Yanchun 《地球空间信息科学学报》2013,16(3):11-18

On the basis of an analysis of the error sources in multibeam echosounding system, a data processing method for compensating systematic errors in multibeam survey is proposed. In order to improve the accuracy of overall swath, a data fusion technique using single beam survey data as control information for single beam and multibeam echosounding is then presented. Some questions involved in solving the adjustment problem, such as its feasibility and the numerical stability, are discussed in detail, and a two-step adjustment method is suggested. Finally, a practical survey data set is used as a case study to prove the efficiency and reliability of the proposed methods.  相似文献   

矿产资源补偿费征收管理工作问题探讨     

贺兆成  程祥英  韩彬 《山东地质》2012,(3):68-70

矿产资源补偿费制度作为矿产资源开发监督管理制度中的一项重要内容,能有效地的保证国家矿产资源所有权益。该文就矿产资源补偿费征收工作中对矿产品的定义、销售收入的核算和回采率系数的核定等方面的争议进行了探讨,并结合工作中常见实例及解决方法提出针对性建议。  相似文献   

全站仪坐标导线的施测与平差探讨     

赵琴霞  法维刚 《测绘与空间地理信息》2011,34(5):242-245

提出了全站仪坐标导线外业施测时的检核方法和内业几种严密平差方法。  相似文献   

Growth, condition and energy stores of Arctic grayling fry inhabiting natural and artificial constructed Arctic tundra streams     

Kimberlea L.F. DriedgerLynn P. Weber  Ian K. BirtwellDavid M. Janz 《Limnologica》2011,41(1):63-69

Juvenile north-temperate and Arctic fishes are faced with trade-offs between energy allocation to growth and energy storage (primarily lipids) prior to over-wintering. We determined classical morphometric (fork length, body weight and condition factor) and biochemical (whole body triglycerides, muscle RNA/DNA ratio, muscle proteins) measures of growth and condition in individual young-of-the-year (YOY) Arctic grayling (Thymallus arcticus). Grayling were collected just prior to over-wintering in late August (approximately 50 days after swim-up) from two natural streams and five locations within a 3.4 km long artificial stream constructed as a fish habitat compensation project and diversion channel for the diamond mining industry in Northwest Territories, Canada (64°45′N). Fork lengths, body weights and whole body triglyceride levels in grayling collected from all sites along the artificial stream were significantly lower than fish collected from one of the natural streams. Condition factor (weight-at-length) was not different among grayling collected from natural and artificial streams. Muscle proteins were lower in grayling collected from four sites along the artificial stream compared to the natural streams. In contrast, muscle RNA/DNA ratios were greater in grayling collected from two sites in the artificial stream compared to natural streams. There were no consistent differences in any variable among grayling collected at the five artificial stream sites or among grayling collected from the two natural streams. The higher RNA/DNA ratios and lower fork lengths, whole body triglycerides and muscle proteins in grayling inhabiting the artificial stream are consistent with energy still being primarily allocated to growth in these fish at this late stage of summer. Individuals that are both larger and possess greater energy storage in the form of triglycerides are more likely to survive the long over-wintering period at this latitude. Our results suggest that YOY grayling using the artificial stream as nursery habitat will likely face increased over-winter mortality, thus raising concerns over the use of fish presence, spawning and rearing as criteria for the initial success of artificial streams as habitat compensation measures in Arctic tundra regions. Further research is needed to determine the potential consequences of reduced size and energy storage in juvenile fishes in order to assess the viability of stream fish habitat compensation and restoration projects associated with industrial development in Arctic tundra regions.  相似文献   

基于反演的衰减补偿方法(英文)   总被引：6，自引：1，他引：5  

王守东 《应用地球物理》2011,8(2):150-157

提高地震资料分辨率的一个有效途径就是衰减补偿,通过对地震波的衰减和频散效应进行校正,提高地震资料的分辨率。常规衰减补偿方法都是基于波场延拓的反Q滤波方法。本文利用Futterman衰减模型,导出了一种衰减介质中合成地震记录的计算方法,在此基础上将衰减补偿问题归结为一个Fredholm积分方程反问题,利用反演方法来实现衰减补偿。针对衰减补偿问题的不稳定性,利用Tikhonov正则化方法提高反演过程的稳定性,数值模拟资料和实际资料处理结果验证了方法的有效性。  相似文献   

地震资料处理中相对保幅性讨论   总被引：1，自引：0，他引：1  

芮拥军 《物探与化探》2011,35(3):371-374

地震资料的相对保幅性处理是进行岩性油气藏勘探的基础,目前关于相对保幅性处理业界没有统一的认识,缺乏对关键处理技术的系统分析.笔者根据多年的实际地震资料处理经验,重点分析了相对保幅处理的难点,提出相对保幅处理的几项判断标准,并以此标准对振幅处理、噪声压制和提高分辨率等处理技术的保幅性进行了分析,这对相对保幅处理具有一定的...  相似文献   

内蒙古农牧交错带生态补偿效应分析     

韩鹏  黄河清  甄霖  李芬 《资源与生态学报(英文版)》2011,2(2):141-150

中国的生态补偿实施主要通过制度安排进行。在内蒙古农牧交错带,生态补偿主要通过两种模式进行,即对农牧户放弃土地使用和生产结构调整给予补偿。基于详尽的野外调查,本研究对农牧户经济受偿意愿进行了对比分析,并对两种生态补偿模式的效应进行了详细评价。结果表明,放弃土地使用的生态补偿模式缺乏创造就业机会的机制,因此不具有可持续性。与此相反,调整生产结构的补偿方式不但使农户从事农牧业的规模有了明显下降,而且有助于创造更多的就业机会。虽然这种模式会使农户面临很大的市场风险,但是它为解决区域生态系统恢复和社会经济发展之间的矛盾提供了一种有效方法。  相似文献