2006-2010

Nghiên cứu đặc điểm cảnh quan ven biển phục vụ định hướng phát triển kinh tế và bảo vệ môi trường huyện Giao Thủy, tỉnh Nam Định

Sun, 01 Jan 2006 00:00:00 GMT

Nghiên cứu đặc điểm cảnh quan ven biển phục vụ định hướng phát triển kinh tế và bảo vệ môi trường huyện Giao Thủy, tỉnh Nam Định Phạm, Quang Tuấn; Trần, Văn Trường This paper represents the results of Giao Thuy coastal landscape investigation, Nam Dinh province - where socio-economic activities have taken place dynamically (aquaculture, tourism, agriculture) but also facing with urgent issues such as environmental degradation, natural hazard (coastal erosion) and social problems. The investigation showed that: i) river-sea dynamics and human activities (dam construction, mangrove deforestation, aquaculture) are the main factors that influence on landscape division; ii) Giao Thuy landscape was classified into 2 subregions with 12 landscape types and 49 landscape forms; iii) the coastal landscape is the young landscape, has a low stability, a high biodiversity, a high productivity and economic values but has a high sensibility with the effects; iv) the direction of landscape division is northwest - southeast and from inland to sea; Some solutions for sustainable development of Giao Thuy coastal landscape were proposed: i) focusing on developing agriculture and rural areas inside the dike; ii) protecting and limited developing aquaculture and agriculture outside the dike.

Nghiên cứu địa chất, địa mạo cho phát triển kinh tế sinh thái đảo Cù Lao Chàm

Sun, 01 Jan 2006 00:00:00 GMT

Nghiên cứu địa chất, địa mạo cho phát triển kinh tế sinh thái đảo Cù Lao Chàm Đặng, Văn Bào; Lê, Đức An Cu Lao Cham Island is composed mainly by strong compressed granite rock of Hai Van formation. It became an island because of locating on a tectonic uplifted block with the direction of NW-SE and the length of 75km. The system of faults and fractures has three main directions: NW-SE, NE-SW and nearly N-S that decisively impact on general direction of mountain ranges, coastal line and valleys. The remarkable morphological characteristic of Cu Lao Cham is the asymmetry showed by the very steep and narrow NE slope while the NS slope is wider and gentler. Although most of island area is general denude slope and fall down slope on granite rock, it’s mophor-substage is clearly with steps such as: < 10m; 10 - 20m; 20 - 30m; 40 - 60m; 80 - 120m; 180 - 220m and >350m. Most area of concave coast is marine original landforms, including marine terraces and beaches of different generation. There exists difference between sea bottom in NE (deeper than 30m near shore) and in SW (main depth under 20m). Cu Lao Cham Island has green vegetation with valuable and rare species; beautiful beaches with clean, fine sand and blue sea, various nice coral; special left stone blocks on the beaches; steep cliffs in East Island and caves- the houses of Yen birds. Those are valuable and special natural resources to develop ecological tourism for the island

Nhận dạng các hệ thống địa chính trong lịch sử Việt Nam

Sun, 01 Jan 2006 00:00:00 GMT

Nhận dạng các hệ thống địa chính trong lịch sử Việt Nam Nguyễn, Đức Khả; Trần, Quốc Bình The term "Cadastral system" is known as a State land management system with 2 essential contents: 1) The administrative-institutional system in land management, which is formed from 3 tools: planning, law, and economic; 2) The administrative-procedural system in land management, which is formed from 2 solutions: land registration and cadastral record establishment. In the history of Vietnam, it is possible to recognize 5 consecutive cadastral systems, which symbolized for 5 periods differentiated by socio-economic development levels: Elementary cadastral system of the Ho Dynasty (at the beginning of XV century), Feudal cadastral systems of the Later Le Dynasty (XV century) and Nguyen Dynasty (XIX century), Developed cadastral system in the French colonial period, and Present cadastral system (Socialist Republic of Vietnam). The cadastral system established from 1994 till now is a contemporary cadastral system, which guarantees the success of national industrialization and modernization process in Vietnam

Đánh giá các vùng chuyên canh cà phê, cao su trên quan điểm địa lý học

Sun, 01 Jan 2006 00:00:00 GMT

Đánh giá các vùng chuyên canh cà phê, cao su trên quan điểm địa lý học Nguyễn, Xuân Độ; Nguyễn, Cao Huần; Nguyễn, An Thịnh The article deals with followings: - Landscape pattern analysis: Dak Lak and Dak Nong territories have divided by 12 landscape ecology regions. This is the base units for propose projects of coffee-rubber crop development. - The integrated ALES-GIS model in landscape evaluation, based on traditional landscape/land-evaluation method and modern GIS technology. The results show that: there are 279,764 ha suitable for coffee crop, 45,000 ha for rubber crop. - These study results are necessary for adjustment of land use planning for cultivated crops growing in Dak Lak and Dak Nong provinces. These provinces can be cultivated 209,164 ha for coffer crop, and 45,000 ha for rubber crop. The results of study may be an important data source for economic development planning in Dak Lak and Dak Nong provinces until 2010.