As a big mountain country , China boasts a mountain area of 6.65 million km2, which accounts for 69.27 % of its total land. Mountains have not only made remarkable contributions to China as a whole in its development and splendid
civilization in history, but also have an important strategic role for future sustainable development of China. The abundant resources , peculiar environment, vast land, ethnic diversity , cultural diversity , species diversity and landscape diversity in mountains have their own features. The economic backwardness , ecological fragility ,
inaccessibility and closeness in mountains may, however, be obstacles for mountain people to achieve sustainable dcvclopmcnt.

Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, has focuscd its studies chiefly on the upper Yangtze River, the Qinghai-Tibetan Plateau and Southwest China whi1e facing the who1e country and the outside world, and done a lot of theoretic and practical researches in the fields of mountain hazards, mountain environment and mountain development. This special issue has addressed such critical and key issues as mountain deve1opment , mountain environment and control of mountain hazards , including the structure, function and evolution of
mountain ecosystem, circulation of matter and energy in mountain environment, monitoring , restoration and rehabilitation of degraded ecosystcms , asscssment of human impact on mountain ecosystem, warning and adjustment of mountain ecoenvironment , which may rcf1cct thc main aspects of researches done in the institute. It is a valuab1e opportunity for us to strengthen academic exchange with our colleagues in other countries and we would appreciate any advice and suggestions on our future work.

1、T=S Model to Simulate Regional Economic Development ……893-896
    Wang Qing，CHEN Guo-jie，Zhang Yu，Chen Yong

2、Impact of the Small Town Construction on Original Inhabitants in the Three Gorges Reservoir Area--A Case Study in

Lishu Village, Changling Town, Chongqing Municipality, China ……897-904
   LIU Shao-quan，CHEN Guo-jie，Chen Zhi-jian

3、 Compensation for Land Loss in Reservoir Resettlement: A Case Study of The Three Gorges Project, China……905-910
     Wang Yi-qian，Tan Yan
4、 Analysis of Poverty Performance and Its Rooted Causes of the Aid-Poverty-Development Counties in Sichuan ……911

-918
   SHEN Mao-ying

5、Systematic Analysis on Factors Affecting the Development of Rural Tourism: A Case Study of Chengdu ……919-925
   He Jing-ming，LI Hui-Xia

6、Analysis of Income Structure of Farmer (Herdsman) of the Tibet Autonomous Region ……926-934
   LI Xiang-mei，Liu Jian，ZHONG Xiang-hao

7、Two Village Ecosystems in the Upper Minjiang River, China: A Comparison of Emergy Flow  ……935-939
   Chen Yong，CHEN Guo-jie，Wang Qing

8、 Discussion on Landscape Ecosystem Planning of Small Basins in the Qinghai-Tibet Plateau-Taking Nieruzangbu Basin

as an Example ……940-948
 HE Xiao-rong，LI Hui-Xia，Li Ai-nong，ZHOU Hong-yi，Wang Xiao-dan

9、Study on the Spreading of Environmental Impact of Human Being's Activities and Its Crucial Factors in Upper

Minjiang River ……949-956
  Fan Hong，Zhao Hong-da

10、Study on Landscape Pattern in the Jinshajiang Xerothermic Valley Using RS and GIS-Taking Yuanmou of Yunnan as an

Example ……957-964
   HE Jin-feng，CHEN Guo-jie，Yang zhong，Su Chun-jiang

11、Environmental Issues of Geothermal Development in Yangbajing, Tibet and the Countermeasures……965-974
    LI Hui-Xia，HE Xiao-rong，Hu Xian-cai，Duo Ji

12、A Study on Forest Species Diversity and Its Ecological Service Function in the Plateau Area of Western Sichuan …

…975-980  DENG Yu-Lin，WANG Yu-kuan，Peng Pei-hao

13、Effects of Land Use Change on Eco-environment in Hilly Area of Central Sichuan Basin--A Case Study of Yanting

County, Sichuan Province ……981-986
  Luo Huai-liang，Zhu Bo，CHEN Guo-jie，GAO Mei-rong

14、Systematic Design and Coordination Acts of Ecological Security in Upper Yangtze River in China ……987-995
    FANG Yi-ping，CHEN Guo-jie

15、Prospects for Future Application of Fugacity Model to Fate Studying of POPs in China ……996-1000
   LI Yong-fu，Cao Hong-ying

16、A New Process Study on Comprehensive Utilization of NOx from Nitric Acid Plant ……101-1006
   Zhou Hou-zhen，Liang Hua

17、Optimization Design of Warping Dam in Wangjiagou, Shanxi Province ……1007-1011
 Zhang Yu，Cui Peng，Li Fa-bin，Wang Qing

18、Disaster Reduction Decision Support System Against Debris Flows and Landslides Along Highway in Mountainous Area

……1012-1020  Li Fa-bin，WEI Fang-qiang，Cui Peng，ZHOU Wan-cun

19、GIS-Based Mapping and Zonation of Landslide Hazards in Xiaojiang Valley of Southwestern China ……1021-1028
   Ma Ze-zhong，HE Yi-ping，Xie Hong，Cui Peng，ZHONG Dun-lun，James S.Gardner

20、Study on the Dynamics Mechanism of Railway Flood in Xinjiang Line of New Eurasian Continental Bridge ……1029-

1033    YANG Si-quan，CHEN Ya-ning，WANG Ang-sheng，Zhang Jian-guo，Li Wei-hong

21、Impoverishment of Soil Nutrients in Gully Erosion Areas in Yuanmou Basin  ……1034-1040
    Zhang Jian-guo，LI Hui-Xia，HE Xiao-rong，Sheng Xin-ju，FAN Jian-Rong，Zhu Bo

22、Erosion and Sediment Production in Small Watershed in Purple Hilly Areas and Prevention Techniques ……1041-1046
    Zhang Bao-hua，HE Yu-rong，ZHOU Hong-yi，Zhu Bo