Tạp chí
Nguyễn Kim Lợi (trang 87-92)
Từ khoá: ảnh hưởng, sử dụng đất, bồi lắng, hồ, hồ Trị An, sông Đồng Nai
Summary
Effect of land use/land cover changes and practices on sediment contribution to the Tri An reservoir of Dong Nai watershed
Mathematical statistical models for predicting reservoir sedimentation were formulated through multiple e=regression analysis using data from Tri An reservoir to correlate with hydrological and various land use parameters during the period 1990 to 1998. All significant variables (annual rainfall, X1, Forestland, X3, natural forest, X4, plantation forest, X5, and agricultural land, X6) have correlation to the RS with r-value higher than 0.5. the most suitable equation suggested for RS prediction for Dong Nai watershed is given. It cold be postulated basing on the model that for every 10% of converting forest in the watershed into conventional cropping area, about 8-9% of RS could be annually increased.
