Ngô Thanh Sơn1, Hoàng Lê Hường1, Nguyễn Đức Lộc2 Bộ môn Tài nguyên nước, Khoa Quản lý Đất đai, Học viện Nông nghiệp Việt Nam.
2 Bộ môn Trắc địa Bản đồ, Khoa Quản lý Đất đai, Học viện Nông nghiệp Việt Nam.
Từ khóa: viễn thám, kiến thức bản địa, đánh giá, biến động, lớp phủ, lớp đất phủ, sông Mã
Application of remote sensing and indigenous knowledge for Assessing Land Use/Land Cover Changes at the Upper Ma River Basin
Ngo Thanh Son, Hoang Le Huong, Nguyen Duc Loc
The need for land use and land cover change information has become a focus in current strategies for managing natural resources and monitoring environmental change. In mountainous areas of Northern Vietnam, increasing population density has led to fast expansion of agricultural areas. This trend resulted in decreasing forest resources associated with soil erosion and resource degradation. The reduction of forests and a replacement of upland rice – based shifting cultivation by continuous maize cropping system are threatening the sustainability of local land use systems. The aim of this study is to assess the land use/land cover changes based on the available moderate resolution remote sensing imagery and historical indigenous knowledge as a basis for understanding and future modelling of land use dynamics. Results indicated that overall accuracy generally performs well with 81% (1994) and 84% (2015), respectively. Within 12 years, many parts of forest have been converted to agricultural land due to the expansion of maize cropping and the lack of regulations to protect and sustainably use forest resources. The results of this study can serve as the bac kground for implementing suitable land use planning program and disseminating these achieved results to other regions in Vietnam.
Keywords: Indigeneous knowledge, Land Use Change, Upper Ma River Basin, remote sensing.
Người phản biện: PGS.TS. Ngô Đình Quế
Ngày nhận bài: 12/7/2016
Ngày thông qua phản biện: 20/7/2016
Ngày duyệt đăng: 05/8/2016