绿鳍马面鲀资源评析与合理利用

本文依据1984年1-4月对1255尾绿鳍马面鲀的年龄观察资料,得到各年龄的平均体长和相应的平均体重,求得主长参数,并根据最高年龄求得其自然死亡系数,还根据该种群的生长参数和自然死亡系数,用Ricker模式进行评析,估算出绿鳍马面鲀渔业的最佳捕捞水平和最佳开捕年龄。同时,根据1977—1985年的渔业统计资料,以机轮拖网投网次数为标准捕捞努力量单位,运用Schaefer模式,对绿鳍马面鲀渔业进行评析,求得其最大持续产量MSY和其相应的捕捞努力量水平f_(MSY)。据此估测,作者认为目前绿鳍马面鲀的利用已达较充分的程度,近两年有捕捞过度的趋势。为此,作者提出应降低目前的捕捞水平和推迟开捕年龄等具体建议。

绿鳍马面魨生长和资源评析

测定从东海区渔轮拖网渔获中取样的299 尾绿鳍马面魨的全长和体重,用其脊椎骨的第3 节椎体作为观察和测定年轮的材料,测出各年龄鱼的年轮轮径及椎体半径,算出各年龄鱼的平均逆算全长,结合全长与体重之间的关系求出生长参数,分析全长、体重生长情况,再根据绿鳍马面魨的自然死亡系数M＝ 0．257 和1992 年的捕捞死亡系数F＝ 1．319,用B－H 模型进行资源评析,评估资源利用程度及最佳利用方案。结果表明：东海绿鳍马面魨资源已过度开发,应采取降低捕捞强度、控制网目尺寸、将开捕年龄推迟为3 a(对应全长224 m m 、体长190 m m )等措施来保护其资源。

淮安生态旅游资源评析

本文利用层次分析法(AHP)并利用相关数学模型对淮安生态旅游资源的27个评价指标进行了综合评价,通过实证研究得出淮安推广生态旅游的可行性。

丹江口水库翘嘴红鲌资源评析与合理利用

本文论述对翘嘴红鲌所作的观测,获得年龄、生长资料。采用Schaefer,Beverton-Holt模式评析。结果表明:翘嘴红鲌体重生长拐点为3.4110龄,自然死亡率M=0.4079,捕捞死亡率F=0.1050,总死亡系数Z=0.5129,最大持续产量MSY=113.21吨,最适捕捞强度f_(MSY)=458164公斤/日·吨,当F=0.2、t_e=2.5时,渔获量是现行产量的2.65倍。

农安县草地资源评析

农安县地处东北松辽平原中部，东经124°32＇至125°45＇，北纬43°54＇至44°59＇之间。全县草场总面积为519698亩，位于松嫩草场的东端。

厦门海沧旅游资源评析

海沧是位于厦门本岛西面的一个半岛。20世纪印年代，海沧开发为台商投资区，区内实行经济特区的优惠政策，规划开发面积100平方公里。区内地势平坦，地质结构稳定，资源丰富，气候宜人。

1994年浙江渔场渔业资源动态评析

本文根据１９９４年浙江渔场渔业资源动态监测调查资料，并引用了宁波海洋局黄东海实况调查资料，阐明了１９９４年渔类丰产原因，渔业资源动态的特点，重点叙述了资源状况较好的虾蟹类，鲐Ｓｈｅｎ鱼和头足类的生产动态，评价浙江渔场的渔业资源状况，提出合理利用渔业资源，保持渔业生产的持续发展。

Evaluation and Development of the Forest Ecotourism Resources on Walking Route from Pai Town to Mêdog County

Pai Town-Medog County Route is known as the first hiking route in China, which is a part of Tibet tourism product, as well as a business card of Linzhi tourism. The route is abundant with natural and human resources. In the research, quantitative and qualitative methods were integrated and scientific evaluation and analysis were made on tourism resources along the route according to National Standard of Classification, Investigation and Evaluation of Tourism Resources, with countermeasures proposed.

THE EVALUATION AND ANALYSIS OF THE TOURISM RESOURCES IN JILIN PROVINCE

This paper comprehensively evaluates and analyzes the tourism resources in Jilin Province, China. And it consists of three parts. The first two parts are on the resources evaluation and analysis. Based on the results of evaluation about the structural and spatial distribution of the tourism resources, it is found that, the natural resources play fundamental roles in Jilin, while the human and cultural resources are important complementary parts as well. In the spatial distribution analysis, the resources show the characteristic of "six clusters"and "three belts"spatial relations. Four clusters are centered on the cities, which are Changchun, Jilin, Baicheng, Tonghua and Ji′an; one cluster is around the Changbai Moutains and one cluster nears the frontier at Tumen between China, Russia and P.D. R. Korea. And the three belts are: 1) The west belt. It contains Xianghai and Momoge natural protection region. The evident of this zone is its ecological and ethical tourism resources. 2)The middle belt characterized by urban traveling and recreation, including Jilin and Changchun, together with their nearby Nong′an and Siping. 3) The last belt is also the most important one, which is the east zone. It covers the Changbai Mountains, the golden triangles of Tonghua and the Tumen River. This zone is remarkable for its abundant natural landscapes and unique folk customs. In the last part the concept planning is briefly constructed for the tourism resources in Jilin Province according to the above evaluation and analysis.

Tourism resource assessment and spatial analysis of wine tourism development： a case study of the eastern foothills of China＇s Helan Mountains

The reasonable development and utilization of mountainous regions closely relates to local economic development and ecological security. The wine production region in the eastern foothills of the Helan Mountains in Ningxia, Ningxia Hui Autonomous Region, with its excellent terroir, is emerging as one of China's three major geographical attractions. Based on surveys of tourism resources and spatial analysis for this wine producing region, we propose a highly representative and practicable path for wine tourism development. Based on China's national standard in Classification, Investigation and Evaluation of Tourism Resources(GB/T 18972-2003), which recommended the types and grades of tourism resources in one area, we conduct an analysis of resource characteristics and the current state of development. Using Arc GIS software, spatialautocorrelation analysis, average nearest neighbor analysis, as well as clustering and outlier analysis, we are able to derive the spatial distribution characteristics of tourism resources. Our survey showed that tourism resources in this area are relatively abundant and have good quality and clear combination advantages. Nonetheless, there are resources shortage for wine tourism and poor integration of wine production with the tourism industry. Regarding the spatial distribution of resources, we revealed the current states of and issues surrounding regions with concentrated resources, as well as characteristics of this clustering. Finally, we proposed a development path for wine tourism in this region based on the five dimensions of management mode, industrial path, product development, spatial optimization, and market development.

Gold Resources Potential Assessment in Eastern Kunlun Mountains of China Combining Weights-of-evidence Model with GIS Spatial Analysis Technique

Resources potential assessment is one of the fields in geosciences,which is able to take great advantage of GIS technology as a substitution of traditional working methods.The gold resources potential in the eastern Kunlun Mountains,Qinghai Province,China was assessed by combining weights-of-evidence model with GIS spatial analysis technique.All the data sets used in this paper were derived from an established multi-source geological spatial database,which contains geological,geophysical,geochemical and remote sensing data.Three multi-class variables,i.e.,structural intersection,Indosinian k-feldspar granite and regional fault,were used in proximity analysis to examine their spatial association with known gold deposits.A prospectivity map was produced by weights-of-evidence model based on seven binary evidential maps,all of which had passed a conditional independence test.The study area was divided into three target zones of high potential,moderate potential and low potential areas,among which high potential areas and moderate potential areas accounted for 20% of the total area and contained 32 of the 43 gold deposits.The results show that the gold resources potential assessment in the eastern Kunlun Mountains has a higher precision.

Research on Tourism Resources Development Pattern Effect Evaluation based on Regression Analysis and Neural Network

In this paper, we conduct research on the tourism resources development pattern effect evaluation based on regression analysis andneural network. Tourism resources development and the protection of all sorts of the contradictions, in the fi nal analysis is the confl ict betweenthe interests of stakeholders. Real life in China, and tourism resources development and protection of the interests of the relevant party basicallyhas the following six parties the local government, investment and the business practice, the original residents, tourists, tourism practitioners, thesocial organization. The survival and the development of general tourism industry is based on the premise of environmental protection, tourismlandscape are carefully protected, let the natural landscape and human landscape form a virtuous cycle, to attract more tourists, promote thesustainable development of scenic spots. Under this basis, this paper proposes the new idea on the issues that is meaningful.