陕北丘陵沟壑区退耕还林中有关问题探讨

Investigating and Studying of Problems of Returning Farmland to Forest and Grassland in Loess Hilly and Gully Region of Northern Shaanxi

针对陕北丘陵沟壑区退耕还林中出现的后续产业不力,重林轻草、轻灌,树种、草种单一且外来物种占优势,不注重生态系统的异质性及政策等方面的问题,提出需加强后续产业建设开发,植被建设要重视先锋物种,模拟天然生态系统及调整退耕还林政策,加速移民建镇,加强科技宣传,提高农民素质等。

There are many problems appeared during returning sloping farmland, to forestland and grassland in loess hilly and gully region of northern Shaanxi, such as having no best followup industry, paying great attention to woods, slighting bushes and grasses,only kinds of trees and grasses are used and exotic species in the ascendant, paying no attention to the heterogeneity of ecosystem and some questions about policies. It is put forward that construction and exploitation about followup industry must be strengthened, vegetation construction should be paid more attention to pioneer species and simulated natural ecosystem, policies about returning farmland to forestland and grassland must be adjusted, migration should be speeded up, scientific and technological propaganda and popularization must be strengthened, farmers' educational level should be heightened. 