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Nitrogen export by runoff and sedimentunder different types of land use inWest Tiaoxi catchment

Journal of geographical Sciences 2002年第4期12卷 443-450页

作者： LIANG Tao1, ZHANG Xiumei1, ZHANG Shen1, YU Xingxiu2, WANG Hao3.1. Inst. of geographic Sciences and Natural resources Research, CAS, Beijing 100101, china 2. Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008, china 3. Institute of Reso Inst. of geographic Sciences and Natural resources Research CAS Beijing China Nanjing Institute of Geography and Limnology CAS Nanjing China Institute of resources Science Beijing Normal University Beijing China

Five typical land covers in West Tiaoxi catchment of china, including mulberry garden, bamboo forest, pinery, vegetable plot and paddy field, were studied on nitrogen loss in artificial rainstorm runoff and sediment. Triple duplication experiments have been carried out under the artificial rain condition with an intensity of 2 ***?1 and lasting 3. minutes in 3.m2 field. Export of various species of nitrogen in runoff and sediment were investigated. The results show that nitrogen loss amount and rate are quite different among five kinds of land covers. The loss of total nitrogen in runoff of mulberry is the largest and that of paddy field is the smallest. Particle nitrogen accounts for 70–90% of total nitrogen in runoff of various kinds of land covers. Loss of dissolved nitrogen in pinery is much higher than in other kinds of land covers, which are similar among them. More detailed species of dissolved nitrogen show their respective features among various land covers. Total amounts of nitrogen loss from the top 10 cm layer of 5 kinds of soils are estimated as high as 4.66–9.40 g.m?2, of which nitrogen loss through sediment of runoff accounts for more than 90%. The rate of total nitrogen losses are ranged in 2.68–14.48 mg.m?***?1 in runoff, which is much lower than that of 100.01–172.67 mg.m?***?1 in sediment of runoff.

关键词： surface runoff nitrogen export artificial rainstorm land use

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Impacts of the Wenchuan Earthquake on the Giant Panda Nature Reserves in china

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Journal of Mountain Science 2010年第2期7卷 197-206页

作者： DENG Xiangzheng JIANG Qunou GE Quansheng YANG LinSheng Institute of geographic Sciences and Natural resources Research Chinese Academy of Sciences Beijing 100101 China Center for Chinese Agricultural Policy Chinese Academy of Sciences Beijing 100101 China Graduate university of the ChineseAcademy of Sciences Beijing 100049 China

The Wenchuan Earthquake that occurred in May of 2008 caused damages to large areas of Sichuan,Gansu,and Shaanxi provinces in *** from local governments and related management agencies show that the giant panda nature reserves in the earthquake-hit areas were heavily *** estimates in this paper of the impacts of the earthquake on the giant panda in the earthquake-hit areas were made based on the interpretation of remote sensing images and information collected by field survey.A rapid assessment method was designed to estimate the damages of the earthquake on giant panda *** using visual interpretation methods,we decoded the remote sensing images of the disaster area in the 49 giant panda nature *** results showed that the Wenchuan Earthquake and the succeeding secondary geological disasters caused great damages to the giant panda nature reserves and disturbed the normal life of the giant pandas there (e.g.,landscape fragmentation increased significantly).Undoubtedly,the life of the giant pandas there was ***,although the earthquake caused certain impacts on the giant pandas,it did not really threat their *** so,we still strongly advocate for protection of the giant pandas,and have prioritized a couple of measures to be taken to restore the giant panda nature reserves in the earthquake-hit areas.

关键词： Wenchuan earthquake Remote sensing Giant panda Giant panda nature reserve Rapid assessment method

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Dynamic change of net primary productivity and fractional vegetation cover in the Yellow River Basin using multi-temporal AVHRR NDVI Data

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Journal of geographical Sciences 2002年第1期12卷 29-34页

作者： SUN Rui1, LIU Chang-ming2, ZHU Qi-jiang1 (1. Department of Geography, Beijing normal university, Beijing 100875, china 2. Institute of {3. Sciences and Natural resources Research, CAS, Beijing 100101, china) Department of Geography Beijing Normal University 北京 100875 Institute of geographic Sciences and Natural resources Research CAS 北京 100101

An exponential relationship between net primary productivity (NPP) and integrated NDVI has been found in this paper. Based on the relationship and using multi-temporal 8 km resolution NOAA AVHRR-NDVI data, the spatial distribution and dynamic change of NPP and fractional vegetation cover in the Yellow River Basin from 1982 to 1999 are analyzed. Finally, the effect of rainfall on NDVI is examined. Results show that mean NPP and fractional vegetation cover have an inclining trend for the whole basin, and rainfall in flood season influences vegetation cover most.

关键词： net primary productivity fractional vegetation cover rainfall remote sensing

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Evaluation on the Development of Agricultural Circular Economy in Hunan Province

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Asian Agricultural Research 2011年第4期3卷 37-39,43页

作者： YANG Yu-rong,TANG Wang-qing Department of resources Environment and Tourism management,Hengyang normal {3.,Hengyang 421008,china Department of resources Environment and Tourism management Hengyang Normal University

By using conceptual model of BPEIR(Behavior-Pressure-Effect-Impact-Response) and Delphi method,we establish the evaluation index system of agricultural circular economy including four indices,namely index of socio-economic development,index of reducing input of resources,index of recycling of resources and index of safety of environment and *** conduct comprehensive evaluation on developmental level of agricultural circular economy from 1998 to 2007 in Hunan *** analysis results show that the agricultural circular economy of Hunan Province from 1998 to 2007,on the whole,has the tendency of development with annual growth rate of 1.89%.The annual decrease rate of recycling of resources and reducing input of resources from 1999 to 2003.is 25% and 11% respectively,which has become the main factor impeding development of agricultural circular *** the year 2003.it is mainly reducing input of resources.

关键词： Agricultural circular economy Comprehensive evalua

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SPECULATION ON DEVELOPING TOUR resources OF THE TOURNAMENT ATHLETICS IN HARBIN CITY

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Chinese geographical Science 2003年第2期13卷 190-192页

作者： MENG Li-li (Politics and Law Department,Mudanjiang normal university, Mudanjiang 157012 , P. R. china) Politics and Law Department Mudanjiang Normal University Mudanjiang P. R. China

The exploitation and utilization of the tour resources of tournament athletics, including skiling, boat sailing, archery, ice engraving, snow engrav ing, has become a new trend of the development of Chinese tourism. Due to the un ique cold climate and superior geographic location,Harbin is a promising city f or developing tour resources of tournament athletics. Based on the analysis of t he superiority and peculiarity of Harbin,the speculation on development of tour resources of tournament athletics in Harbin is proposed as follows:1) Harbin s hould develop its special tour resources of tournament athletics associated with needs of market; 2) Harbin should take the advantages of rich resources and dev elop ice and snow entertainment in winter and travel for sight-seeing and spend ing summer; 3. the adjustment of the layout of ice and snow resources should be based on the idea of taking Harbin as the center and all-side opening at the la rge scale in the way of radiation; 4) tourism should be developed by the combine d efforts of various departments to make feasible plan, and the organizers shoul d pay much attention to ensuring the safety of tourists.

关键词： harbin city tour of tournament athletics development and exploitation

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Pollen indication to source plants in the eastern desert of china

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Science Bulletin 2005年第15期 98-107页

作者： LI Yuecong1,2, XU Qinghai2, ZHAO Yingkui3. YANG Xiaolan4, XIAO Jule1, CHEN Hui2,5 & Lü Xinmiao5 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, china 2. college of resources and Environment, Hebei {3. university, Shijiazhuang 050016, china 3. Department of Environmental management, university of Central Lancashire, Preston, UN 4. Hebei Geography Institute, Hebei Academy of Sciences, Shijiazhuang 050011, china 5. Institute of geographical Sciences and Natural resources Research, Chinese Academy of Sciences, Beijing 100101, china

In order to investigate the indication of major pollen types to source plants, 3. surface pollen samples are collected from 3. plant communities. The results show that diversity of pollen assemblages presents in different commu-nities. Chenopodiaceae pollen percentages are highest in Kalidium communities and Ceratoides communities (higher than 45%, average is 63.4%), but high Ephedra pollen per-centages (higher than 3.3., average is 16.5%)in Ceratoides communities make it distinguished from Kalidium communi-ties. Artemisia pollen percentages (more than 50%) are much higher than Chenopodiaceae (less than 3.%) in Artemisia Communities. Nitraria pollen percentages (higher than 2%, average is 13.6%) are highest in Nitraria communities com-pared with those in other community patterns. Tamariceae pollen percentages (higher than 2%, average is 8.6%) are highest both in Tetraena and Reaumuria communities com-pared with those in other community patterns. But in Reau-muria communities, Artemisia pollen percentages are higher than Chenopodiaceae with some other pollen types such as Gramineae, Compositae, Leguminosae; on the contrary, in Tetraena communities, Artemisia pollen percentages are less than Chenopodiaceae with few other pollen types. Calli-gonum pollen only appears in Calligonum communities (higher than 2%,average is 5%). The results of cluster analysis (CLA) and detrended correspondence analysis (DCA) show that the pollen indication to source plants can be reflected by association indices (A), over-representation in-dices (O), under-representation indices (U), R-value, the av-erage pollen percentages where parent plants are absent (Xa) and the average pollen percentages where parent plants are present (Xp). Zygophyllum, Calligonum, Tetraena, Tribulus and Tamariceae can indicate source plants very well, owing to high A scores. Artemisia, Chenopodiaceae and Gramineae have high R-values, and Nitraria, Cruciferae and sedum have high O scores, so they are over-represente

关键词： eastern desert of china pollen indication association indices (A) over-representation indices (O) under-representation indices (U) correlation coefficients (CC) similarity coefficients (C) detrended correspondence analysis (DCA) cluster analysis (CLA) ratios of Nitraria and Ephedra (N/E) ratios of Ephedra and Artemisia (E/A) ratios of Artemisia and Chenopodiaceae (A/C).

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地域分异特征对区域研究与开发的影响

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山地学报 2002年第6期20卷 765-768页

作者：骆高远浙江师范大学旅游与资源管理学院地理系金华 3.1004

区域研究与开发,是地理工作者服务于社会的立足点。而搞好区域研究与开发,是以掌握区域特征及其变化规律和形成原因为前提的。本文从地域分异规律和自然区域特征及其形成原因着手,提出掌握区域特征及其分布规律的方法,并总结区域研究的... 详细信息

区域研究与开发,是地理工作者服务于社会的立足点。而搞好区域研究与开发,是以掌握区域特征及其变化规律和形成原因为前提的。本文从地域分异规律和自然区域特征及其形成原因着手,提出掌握区域特征及其分布规律的方法,并总结区域研究的思路和步骤,对搞好区域研究与开发具有较大的借鉴意义。

关键词：区域特征变化规律区域研究区域开发

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Quasi-periodicity of temperature changes on the millennial scale

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Progress in Natural Science:Materials International 2003年第8期 43-48页

作者： GE Quansheng, FANG Xiuqi and ZHENG Jingyun (1. Department of Geography, Lanzhou university, Lanzhou 73.000, china 2. Institute of geographical Science and {3. Research, Chinese Academy of Sciences, Beijing 100101, china 3. Department of Geography, Beijing normal university, Beijing 100875, china)

Quasi-periodicity of temperature changes on the millennial scale is found according to the proxy data both from historicaldocuments and natural evidence in china. The auto-correlation of the temperature changes series for the last 2000 years is most significanton the 13.0 a time lag. The period of 13.0 a includes 4 warm/cold stages: 200～250 a warm stage, 150～200 a cold stage, 3.0～3.0 awarm stage, and 550～600 a cold stage. In contrast to the 550～600 a cold stage, the other three stages can be united in one warm domi-nant stage. Inferred from the 13.0 a period, the 20th century warm stage belongs to the 200～250 a warm stage, which is similar to thewarm stage occurring during the 570's～770's. The process of temperature change in the 20th century warm stage is similar to that ofthe 570's～770's. But the warming rate in the 20th century is more rapid. The temperature anomaly in the 1980's～1990's shows agreater departure from the regression equation of that between 1500' s～1900's and 150's～650' s. W

关键词： quasi-periodicity temperature change millennial scale the period of 13.0a.

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烟台市城镇群现状特点及可持续发展问题

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烟台师范学院学报（自然科学版） 2004年第2期20卷 133-136,147页

作者：魏兴华烟台师范学院地理与资源管理学院山东烟台264025

在区域和城镇相结合的基础上,分析了烟台市域城镇群发展的有利条件和制约因素,并提出了城镇可持续发展的方向。

关键词：烟台市城镇群现状可持续发展影响因素

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A RESEARCH ON URBAN RECREATIONISTS' TRAVELING BEHAVIORS IN SHANGHAI

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Journal of geographical Sciences 1996年第1期6卷 26-35页

作者： Wu Bihu(Department of Tourism Studies, East china normal university, Shanghai 200062People’s Republic of china) Department of Tourism Studies East China Normal University Shanghai 200062 China

Urban recreationists consist of those who have used urban recreational facilities, no matter they are local residents or nonlocals. Traveling models will exert impacts not only on the use of urban recreational facilities but also on the development and management of recreational resources. Taking Shanghai as a sample of destinaton and origin of urban recreationists, the author did his study based on data from comprehensive travel measurement and users' survey, including field questionnaire survey, mailing questionnaire survey, home survey, and cordon monitonng. To analyze traveing models of urban recreationists in Shanghai, the author used techniques of Recreational Activity Space (RAS) and the Use Curve (UC) Analysis. Rogarding Shanghai as an origin, the author first discussed types and characteristics of the RASs which are presented by isotourist lines in the proper and outskirts of Shanghai, the Yangtze Delta and the china's Mainland respectively. These RASs reflect the trave directional bias of Shanghainese. Then the author regarded Shanghai as a deshnahon and analyzed the RASs of tounsts from Otier provinces, which demonstrated the attractiveness of and distance decay of Shanghai. He found that a U-shaped UC model existed in the distance decay under the influence of attractiveness and distance. Finally, the author suggested, that the availability, periodicity and attractiveness, besides distance, are the basic mechanisms that affect the urban recreationists' traveling models in a city such as Shanghai.

关键词： Shanghai recreationist traveling behavior recreational activity space,use curve

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