Assessment of diversity, distribution, conservation status and preparation of management plan for medicinal plants in the catchment area of parbati hydroelectric project stage — III in Northwestern Himalaya   总被引：1，自引：1，他引：0  

S. S. Samant  Jitendra S. Butola  Aman Sharma 《山地科学学报》2007,4(1):034-056

The developmental activities, particularly the construction of hydroelectric projects are causing a great loss of biodiversity in the Indian Himalayan Region. The Himachal Pradesh, a part of IHR is well known for the development of hydroelectric projects. The Parbati H.E. Project is amongst the major projects of the State. The different stages of the project are all causing loss of biodiversity of the area. Stage III of the Parbati H.E. Project is a run of the river scheme on the Sainj River downstream of Power House of Parbati H.E. Project Stage II. The project shall utilize regulated discharge of Parbati H.E. Project Stage II and inflow of River Sainj for power generation, and has been contemplated as a peaking station operating in tandem with Stage II. The present study has been undertaken to see the impact of hydroelectric project on the biodiversity, particularly on medicinal plants. A total of 104 species of medicinal plants, belonging to different life forms, i.e., trees (23 spp.), shrubs (22 spp.), herbs (57 spp.) and ferns (2 spp.) were recorded. The species have been analyzed and studied for their distribution, classification, altitudinal zones, part (s) used, indigenous uses, nativity, endemism and rarity. DDifferent parts of these species, such as whole plants, roots (including rhizomes and tubers), leaves, flowers, fruits, seeds, stems, barks, spikes, nuts and insect galls are used by the inhabitants for curing various diseases and ailments. 30 species are native to the Himalayan region, 9 species native to the Himalayan region and adjacent countries also and 65 species are non-natives. 9 species are near endemics. Considering the whole Himalaya as a biogeographic unit (sensu lato), the near endemics are endemic to the Himalaya. Among these species, Zanthoxylum armatum is categorized as Endangered and Valeriana wallichii as Vulnerable. Hedychium spicatum, Rhus javanica, Berberis lycium, Thalictrum foliolossum, Salvia lanata, Rubia cordifolia and Bergenia ligulata may be considered as threatened species due to their over exploitation for trade. 90 species are propagated by seeds, 8 species by seeds and rhizomes/roots/tubers, 4 species by seeds and cuttings, and 2 species by sori. A management plan for the cultivation and conservation of the medicinal plants in the dam submergence area, and the commercially viable medicinal plants with high value in the catchment area is suggested.  相似文献   

祁县地下水超采现状及对策研究   总被引：1，自引：0，他引：1  

贺洁茹 《地下水》2010,32(4):51-53

由于祁县地下水多年来一直处于超采状况,致使平川区地下水位大面积下降,部分水井干枯,水资源供需存在严重的矛盾。本文通过对祁县超采现状及调控对策分析,以水资源可持续利用的理念,提出了解决水资源供需矛盾的对策。  相似文献   

单体地质灾害应急预案编制与实施问题     

刘传正 《中国地质灾害与防治学报》2010,21(3):92-96

为了提高防灾减灾的针对性和有效性,本文提出了单体地质灾害应急响应预案的编制方法和实施要求。文章内容包括基本概念、基本内容、启动要求、预警与应急等级划分和便于操作应用的表格图式等。文章可为提升城乡社区地质灾害防控能力参考应用。  相似文献   

勘查实施方案评审有关问题探讨     

李建设 《安徽地质》2010,20(3):169-170,182

随着矿产资源勘查投资主体的多元化,对我国矿产资源商业性勘查的发展和矿产勘查的进程有了一定的促进。但在矿产勘查方面仍存在一些不容忽视的问题。对此,国土资源部出台了相关文件,对上述所出现的问题进行了一定规范,根据这两个文件精神,本文对矿产资源勘查实施方案评审工作所涉及到的有关问题的解决方案作一些探讨。  相似文献   

土地利用规划的实施管理研究     

李嘉碧 《山东地质》2010,(7):36-40

土地规划实施管理的研究是新一轮土地利用规划的亮点,该文通过对规划实施存在问题及实施难的原因分析,对比国内外的土地利用规划,借鉴国外土地利用规划实施管理的理论与实践,最后对我国土地利用规划实施保障措施提出对策建议。在土地利用规划实施管理保障框图的基础上,该文特别就借鉴外国土地规划的理论与实践、基层地方的作用、公众参与和经济措施4个方面提出相关建议。  相似文献   

关于长春市大气污染治理规划的初步研究     

焉莉 《吉林地质》2001,20(1):61-64

随着社会的发展，大气环境质量日趋恶化，针对长春市的自然背景条件及大气质量现状，笔者分析了造成大气质量下降的原因及存的问题，提出治理的原则、目标及近、远期的治理规划。  相似文献   

Simplified analysis of asymmetric structures with supplemental damping     

Rakesh K. Goel 《地震工程与结构动力学》2001,30(9):1399-1416

This study investigated the effects of neglecting off‐diagonal terms of the transformed damping matrix on the seismic response of non‐proportionally damped asymmetric‐plan systems with the specific aim of identifying the range of system parameters for which this simplification can be used without introducing significant errors in the response. For this purpose, a procedure is presented in which modal damping ratios computed by neglecting off‐diagonal terms of the transformed damping matrix are used in the traditional modal analysis. The effects of the simplification are evaluated first by comparing the aforementioned modal damping ratios with the apparent damping ratios obtained from the complex‐valued eigenanalysis. The variation of a parameter that was defined by Warburton and Soni as an indicator of the errors introduced by the simplification is examined next. Finally, edge deformations obtained from the simplified procedure are compared with those obtained from the direct integration of the equations of motion. It is found that the simplified procedure may be used without introducing significant errors in response for most practical values of the system parameters. Furthermore, estimates of the edge deformations, in general, tend to be on the conservative side. Copyright © 2001 John Wiley & Sons, Ltd.  相似文献   

A COMPREHENSIVE MANAGEMENT PLAN FOR COASTAL LOUISIANA     

Ivor Ll. van Heerden 《地理学报》1999,(2):165-176

１Ｅｎｖｉｒｏｎｍｅｎｔａｌｓｅｔｉｎｇ１．１ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｃｏａｓｔａｌｗｅｔｌａｎｄｓａｎｄｅｓｔｕａｒｉｅｓｏｆＬｏｕｉｓｉａｎａａｒｅｏｎｅｏｆｔｈｅｗｏｒｌｄ＇ｓｇｒｅａｔｅｃｏｓｙｓ－ｔｅｍｓ［１］．Ｆｏｒｍｉｌｅｎｎｉａ...  相似文献   

基于改进A^*算法的水下重力匹配导航路径规划          下载免费PDF全文

欧阳明达  马越原 《地球物理学报》1954,63(12):4361-4368

水下重力匹配导航作为辅助手段,能够有效克服惯性导航系统在水下长时间航行产生的误差积累.重力场的不规则性,使得不同海域重力场适配性存在差异,重力特征变化显著的海域匹配精度较高,反之精度较低.在适配性评价基础上,对导航路径进行规划有助于提高作业任务可行性,合理规避不利因素.本文采用重力异常标准差、粗糙度等特征参数对海域重力场适配性进行评价,形成重力场适配格网参考图,引入A^*算法规划起始点和目标点间路径,达到了有效规避非适配区、提高航路设计合理性的目的.传统A^*算法存在的问题是,规划路径折线较多、线路总弯曲度大,本文设计了一种改进方法,通过前后向对比分析,对单个路径节点逐个进行筛选过滤,有效减少了冗余航向调整,实现了路径的平滑优化.  相似文献   

战略环境评价的若干理论问题的探讨   总被引：3，自引：0，他引：3  

王世亮  梁立乔 《云南地理环境研究》2004,16(3):77-80

战略环境评价(简称SEA)是环境影响评价(简称EIA)研究领域的前沿课题。中国对SEA的研究始于20世纪90年代，起步较晚。在了解SEA的概念、特点的基础上，阐述了SEA与项目EIA在评价方法、评价内容上是有所差异的，在评价程序和步骤上是有共同点的。SEA是项目EIA的深化和提高。目前在中国进行EIA的过程中，EIA的局限性和所反映出的问题日益明显，为了提高中国EIA的针对性、科学性和有效性，应积极开展SEA的研究和实践。  相似文献