曲沃县渔业发展思考及建议

近年来,曲沃县渔业形成了新格局,取得了较大发展。介绍了全县渔业发展建设现状,分析其存在的产业发展不平衡、科技水平不高、政策扶持力度不够等问题,并结合实际提出了加快水产养殖业结构调整,积极推进特色渔业生产,加强水产品质量监管,完善基础养殖设施等针对性的解决措施。     

广安区成立渔业协会

2004年11月初，广安区渔业协会顺应水产产业化和贯彻区委、区政府关于大力发展农村合作组织的精神，在广大渔业业主日益高涨的养殖热潮中成立。该区有宜渔工程水面7933．33hm^2，宜渔冬囤水田1．25万hm^2，具有优越的水产养殖条件。近年来，广安区水产业持续、快速、健康发展，涌现出了一大批水产基地乡镇、水产养殖大户、运销大户和众多水产养殖户，渔业呈现区域化、     

曲沃县洪涝灾害分析与对策措施

曲沃县位于山西省临汾盆地南部,为两山夹一盆的地形,防汛压力很大。文中通过对防洪存在问题的分析,提出相应的对策措施。     

曲沃县水资源可持续发展对策探讨

针对曲沃县水资源基本情况、开发利用现状及面临的水资源时空分布不均、地下水开发潜力小及水污染严重等问题,提出水资源可持续利用应采取制定干旱应急对策、大力开发利用外境水、加强水污染处理、节约用水等措施。     

曲沃县农村饮水安全工程建设成效存在问题及建议措施

阐述了曲沃县农村饮水安全工作取得的成就，分析了农村饮水面临的主要问题，提出了工程与非工程相结合的建议措施。     

铜川市发展休闲渔业的思考

本文针对铜川市的休闲渔业发展现状和所具有的发展潜力，为了实现全市休闲渔业的快速良性发展，通过走访、实地察看等多种形式，对全市休闲渔业发展情况进行了调查，就近期和远期渔业发展提出了一些新思路。     

淡水渔业的一支奇葩——水利渔业

我国水利渔业是利用已建水利工程设施所形成的水域、滩涂发展水产养殖的一门新产业,它以水利渔业为主体,兼含渠道、河道、塘堰、滩涂等水体发展渔业生产,是我国淡水渔业的重要组成部分。 近5年来,我国水利渔业生产领域不断扩大,经济效益不断提高,正处于蓬勃发展的大好时期。其中,水库渔业1989年渔业总产33.9万吨,平均亩产16公斤,1993年总产和亩产成鱼可达50万吨和23公斤,水库渔业养殖技术和单产水平已走在世界前列。 一、水利渔业养殖技术 库湾养鱼,指在大中型水库库湾消落区筑坝,实行精养或半精养方式开展水产养殖,成为提高水库鱼     

地方渔业发展与渔业网站建设

当前社会已进入信息化时代,而我们水产业除几个简单的统计报表外,在信息使用上还几乎是空白。本文仅想借此倡导业内人士,充分利用目前的高科技手段,加快推进我省水产业信息化建设不断发展,从而促进地方渔业的发展。     

水利水电勘察设计单位改革情况调查报告

为更好地服务于会员单位,根据中国水利水电勘测设计协会第八届第二次理事会会议要求,协会组织调研组对我行业勘察设计单位改革情况,进行了调查研究工作,并就我行业勘察设计单位改革的现状和存在的问题提出了调查报告。本次调研得到了各会员单位的大力支持,也充分体现出了各会员     

都江堰灌区用水者协会现状研究

本文介绍了都江堰灌区用水者协会的发展状况，通过比较用水者协会在建设规模、机构设置、灌区管理、协会运营等方面的异同点，分析用水者协会自成立以来的成效和不足，提出都江堰灌区进一步深化和推广用水者协会的改革建议。     

An Economic Analysis of Integrated Fisheries Management: The Case of the Lake Michigan Alewife and Salmonid Fisheries

Intense predator-prey relationships exist between stocks of alewives and salmonids in Lake Michigan. In this paper, the economic implications of these biological interactions are explored and suggestions regarding efficient fisheries management options are made. A theoretical optimal control model is developed which delineates conditions for optimizing alewife and salmonid harvest rates. Model results indicate that the indirect effects which harvesting in one fishery have on harvest costs and returns in the other must be considered if economic efficiency in alewife/salmonid management is to be achieved. Furthermore, marginal net social values associated with alewife and salmonid harvests must be equated. It is estimated that alewives currently have a marginal net social value close to zero compared to $4.10 per salmonid. These findings strongly suggest that utilization of alewife biomass as a forage base for predatory salmonids is more efficient than direct harvesting of alewives in a commercial fishery.     

Lake Sturgeon Waters and Fisheries in New York State

Historic and contemporary records of lake sturgeon (Acipenser fulvescens) occurrences in new York State have been assembled in this report to assist in planning and prioritizing the areas for restoration. This has become important because information about this threatened species is not easily assembled nor easily retrieved from the few remaining fishermen. Lake sturgeon were identified in 17 waters of New York State in the Great Lakes drainage including Lakes Erie, Ontario, Champlain, and the Niagara and St. Lawrence rivers. Two other rivers in the Laurentain Great Lakes drainage had self-sustaining populations, five others historically supported spawning runs, and five other waters had historical records of use or relict populations. Lake Erie provided the largest historic fishery for lake sturgeon in New York State (1,678 tonne reported in 1885) followed by Lake Ontario (292 tonne reported in 1890). All the major waters (the first five identified above) had large harvests, and two tributaries to the St. Lawrence River, the Grasse and Oswegatchie rivers, also provided commercial harvests. The Great Lakes fisheries were reduced to abandonment by the 1940s and the remaining ones were discontinued by the 1960s. Currently, lake sturgeon are self-sustaining at very low levels in the upper Niagara, St. Lawrence, and the Grasse rivers. The fish is protected from harvest in all areas but one.     

秦安县小型农田水利重点县建设初探

<正>2009年,甘肃省秦安县根据财政部《关于实施中央财政小型农田水利重点县建设的意见》和省财政厅、水利厅《关于印发2009年中央财政小型农田水利工程建设项目立项指南通知》的有关要求,紧密结合该县以往小型农田水利建设的实际,积极组织编制并上报重点县建设方案。     

密云县水土保持在生态县建设中的作用及发展对策

为保护北京饮用水源——密云水库,多年来密云县积极开展了水土流失治理工作;2005年,密云提出了创建国家生态县的目标。随着生态县建设的深入,保护密云水库力度进一步加大。阐述水土保持在生态县的作用,分析了存在的问题,提出水土保持的发展对策。     

Changes in the Utilization of New York's Great Lakes Recreational Fisheries

Given the biological, environmental, and regulatory changes that have occurred over the past 10 years with New York's Great Lakes fisheries, it is important to update estimates of angler effort and expenditures. Changes in angler effort and expenditures may relate to changes in fish stocks, habitat, and other more general demographic trends. Data from two mail surveys conducted in early 1997 were used to estimate angler effort and expenditures on New York's Great Lakes waters for calendar year 1996. In 1996, 37% of people who bought a fishing license in New York, or 392,270 anglers, fished at least 1 day on New York's Great Lakes waters. Approximately one-quarter (24.1%) of these anglers came from outside New York State. Anglers fished an average of 13.7 days for a total of 5.4 million days on Great Lakes waters in 1996. The most striking changes in Great Lakes fishing effort in New York over the past 20 years have occurred on Lake Ontario. Effort increased during the 1970s and 1980s and was highest in the late 1980s to early 1990s, at over 2.5 million days. Effort has dropped by one-third between 1988 and 1996. Lake Erie did not experience the increase in fishing effort seen on Lake Ontario in the early 1980s, but did experience a similar decrease in effort between 1988 and 1996. Despite changes in fishing regulations to remove snagging on the Salmon River, angler effort was basically unchanged between 1988 and 1996. Fishing effort along the St. Lawrence River was relatively constant between 1973 and 1988, but increased by almost 30% between 1988 and 1996. Possible explanations for changes in fishing participation using both biological and sociological data are discussed.     

淅川县农村电气化建设

淅川县农村水电初级电气化建设成绩显著，电源、电网协调发展，用电水平不断提高，促进全县经济全面增长，提高了城乡人民物质文化生活水平，壮大了水电供电企业实力，顺利通过验收。农村电气化建设已成为淅川县经济发展、社会进步的关键因素和消除贫困的主要途径。通过电气化建设变资源优势经济优势，实现“工业强县、农业特色县、旅游大县、财政富县”的目标。     

Optimal Management of Water for Sustainable Fisheries and Aquaculture

This paper discusses optimal management for water resources in the context of the over‐exploitation of fish and the pollution of freshwater fisheries, along with aquaculture, in inland and coastal areas. An optimal control model maximizing social surplus focusing on the dynamic relationship of fish stock externality, price, outputs, costs and polluting wastes is developed. It provides the necessary conditions for optimal management for both fishery and aquaculture, which produce the same product for the market, and also develops time‐paths and phase diagrams for policy application.     

黎川县山洪灾害防治非工程措施县级监测预警平台建设

本文通过江西省黎川县暴雨山洪的基本特征分析,介绍了该县山洪灾害防治非工程措施灾害的四大体系基本情况,并重点介绍了县级监测预警平台基本功能和群测群防体系.