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Evaluation on Cultivated Land Resource ecological service value in Wuhan Metropolitan Area

Agricultural Science & Technology 2014年第10期15卷 1809-1811,1832页

作者： Jinhua TANG Yinghui LI Gangqiang CHEN Lei YU Sujuan LI College of Economics & Management Changsha University

The land ecosystem service function value contains the gas regulating function value, air purification function value, water conservation value, land conser-vation value, soil nutrient conservation value and maintain biodiversity value. Based on the method of market value and the data of Hubei Statistical yearbook, cultivat-ed land resources of ecosystem service function value is 730 038.69Mil ion in 2007-2009, and 714 774.99 Mil ion in 2010-2012 in Wuhan Metropolitan Area. After three years of development, Wuhan Metropolitan Area of ecological value of cultivated land has increased by about 3.97%. From the point of each composition, the im-portance of gas regulating function of cultivated land resources and water conserva-tion function is the forefront. From the point of spatial distribution, the highest of annual average value of the cultivated land ecological was Huanggang （1.725 bil ion yuan）, the lowest was Ezhou （217.868 6 mil ion yuan） in 2010-2012. From the point of space changes, the land ecological value increased only in Qianjiang city, while farmland ecological value in other cities was fal ing The conclusion is of direc-tive significance to the regional land protection policy and the farmland reasonable distribution, for Wuhan Metropolitan Area and other areas.

关键词： Wuhan Metropolitan Area Cultivated land resource ecological service value

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Cold storage alters the fat-trehalose trade-off,decreases the flight ability,and maintains the high survival rate and flight speed of Osmia excavata(Hymenoptera:Megachilidae)

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Insect Science 2024年第3期31卷 927-936页

作者： Yingying Song Li Liu Fang Ouyang Hongying Cui Wenxiu Guo Suhong Lv Baohua Ye Lili Li Yi Yu Xingyuan Men Institute of Plant Protection Shandong Academy of Agricultural SciencesJinanChina College of Plant Protection Shandong Agricultural UniversityJinanChina State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBejingChina

Osmia solitary bees are important pollinators of various crops *** has been widely used to synchronize the emergence time of Osmia species from cocoons with the blooming time of different crops,but the fitness of Osmia after refrigeration remains ***,the effects of long-term refrigeration at 0℃on the vitality,flight ability,and metabolism of Osmia excavata,which is known as the"king of pollination"in China,were *** survival rate(>90%before 120 d),weight loss rate(ecological service function of refrigerated ***.

关键词： ecological service value flight ability Osmia pollination efficiency refrigeration vitality

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ESTIMATION OF ecological service valueS OF WETLANDS IN SHANGHAI, CHINA

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Chinese Geographical Science 2005年第2期15卷 151-156页

作者： LIBo ZHONGYang NAKAGOSHINobukazu CHENJia-kuan MinistryofEducationKeyLaboratoryforBiodiversityScienceandecologicalEngineering lnstituteofBiodiversityScienceFudanUniversityShanghai200433P.R.China GraduateSchoolforInternationalDerelopmentandCooperation HiroshimaUniversityHigashi-Hiroshima739-8529Japan

Shanghai is a coastal metropolitan city with various types of natural wetlands, which account for 23.5% of its total area. According to the definition of wetland in Ramsar Convention on Wetlands, the wetlands of Shanghai were classified into 4 types: coastal, riverine, lacustrine, and reservoir and pond wetlands. In order to examine the roles of wetlands in the life-support system of Shanghai, we calculated the area of each type of the wetlands using GIS technique, and then measured the ecological service values of different ecosystems in Shanghai based on the classification of ecosystem services proposed by COSTANZA et al. (1997). The estimated annual value of ecosystem services in the study area was 7.3×109US$/a for the total area of 1 356 700ha, among which about 97% was provided by the wetlands. Effective conservation and management of wetlands are therefore crucial to Shanghai’s sustainable development. The limitations of the evaluation method for ecosystem service value were also discussed in the present paper.

关键词： ecosystem service ecological service value GIS Shanghai

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Ecosystem services Evaluation of Karst New Urban Areas Based on Net Primary Productivity of Guanshanhu District, Guiyang, Guizhou Province, China

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Open Journal of Ecology 2022年第6期12卷 377-390页

作者： Ou Deng Yiqiu Li Ruoshuang Li Guangbin Yang School of Geographic and Environments Sciences Guizhou Normal University Guiyang China GuiZhou Provincial Key Laboratory of Mountain Resources and Environment Remote Sensing Application Guiyang China School of Earth Sciences and Resources China University of Geosciences Beijing China

Net Primary Productivity (NPP) is the basis of the material and energy transport calculation in ecosystem studies. NPP directly reflects the production capacity of plant communities under natural conditions. Ecosystem services are hot topics in the field of ecology. Many studies calculate ecosystem service value based on NPP. Taking Guanshanhu District of Guiyang City, Guizhou Province as the research object, using TM, ETM+, Gaofen2 and MOD17A3HGF.006 as data sources, this paper analyzed the change of ecosystem service value based on NPP in 2000, 2010 and 2020. The results showed that the area of forest ecosystem increased during 2000-2010 and decreased during 2010-2020. The artificial surface grew rapidly from 1146.82 hm2 to 7544.29 hm2 during 2000-2020. The farmland ecosystem decreased from 13308.29 hm2 to 6342.33 hm2 during 2000-2020. With the dynamic changes in ecosystem spatial distribution and component structure, the total NPP in 2000, 2010 and 2020 was 12.58 × 104 t, 11.90 × 104 t and 11.78 × 104 t, respectively, showing a decreasing trend. The total value of natural and semi-natural ecosystems services based on NPP showed an increasing trend, which was ￥ 6.938 × 108 in 2000, ￥ 8.052 × 108 in 2010 and ￥ 10.306 × 108 in 2020 respectively. The ecosystem contributed the most to the ecological service value in 2000 was farmland, but in 2010 and 2020, it was the forest ecosystem. The ecological service value of grassland and wetland was relatively small, while the ratio of the wetland ecological service value displayed a decreasing trend. In the future, it is necessary to establish a strict pretrial system for land use, so as to effectively protect the natural and semi-natural ecosystems and fulfill the growing ecological demands of residents.

关键词： Karst Net Primary Productivity (NPP) ecological service Physical Quantity ecological service value Guanshanhu District

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中国各省份农地资源价值量估算

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农业经济研究 2013年第4期

作者：彭开丽彭可茂席利卿

农地除了能够依靠其生产功能而具有经济产出价值外，在空气和水的净化、生物多样性的维持、景观的提供及社会保障与安全稳定等方面也发挥着重要的作用。但由于市场机制的自身缺陷，人们对农地价值缺乏充分认识，导致农地资源得不到应有... 详细信息

农地除了能够依靠其生产功能而具有经济产出价值外，在空气和水的净化、生物多样性的维持、景观的提供及社会保障与安全稳定等方面也发挥着重要的作用。但由于市场机制的自身缺陷，人们对农地价值缺乏充分认识，导致农地资源得不到应有的保护。本文在将农地功能划分为经济生产、社会保障和生态服务的基础上，以2009年为评估期，尝试构建柯布—道格拉斯生产函数(C-D函数)和用近似市场法对我国1994年-2009年30个省份农地资源的经济产出价值、社会保障价值和生态服务价值进行了动态估算。结果显示：无法通过市场价格表现的社会保障价值与生态服务价值均远远大于农地经济产出价值，农地的社会保障价值在农地总价值中占有相当大的比重，其比例呈现出逐年增加的趋势。因此，农地的社会保障价值和生态服务价值无疑是农地价值中不容忽视的重要组成部分，应当引起土地管理者和农地非农转用决策者的充分重视。

关键词：中国农地资源经济产出价值生态服务价值社会保障价值估算 China agricultural land resources economic output value ecological service value social guarantee value assessment

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