豫西黄土丘陵区植被恢复与重建的理论基础及技术体系

Theory and Techniques of Restoring and Reconstructing Vegetation in Loess Hilly Area in Yuxi

通过对豫西黄土丘陵区林草植被现状和治理模式的实地调研,运用大量基础研究资料,借鉴生态学的基本理论,从理论和实践两方面开展了林草植被恢复与重建的理论基础及技术体系的研究;描述了退耕农田的自然演替过程,研究和分析了林草植被恢复与重建的机理;应用最佳平方逼近的数学方法,提出了林草植被恢复与重建的预测模型和时间表,构造了主要乡土先锋树种的生长预测模型;制定了林草植被恢复与重建的目标和程序,确定了适合本区的林草农田配置模式,提出了乔灌树种的配置方案和牧草的种植模式。其成果对整个黄土高原生态环境建设有重要的指导意义。

Based on field investigation of forest and grass vegetation and small watershed comprehensive harness projects of loess hilly area in Yuxi,theory and technical system of restoration and reconstruction of vegetation are discussed. The natural succession from returning farmland to woodland and grassland is described. The mechanism of restoration and reconstruction of vegetation is analyzed. The predicting model and time table of restoration and reconstruction are presented. The growing curve of countryside tree is drawn. The aims and programs of restoration and reconstruction are constructed and their distributive model is portrayed. This paper gives comprehensive technical system of restoration and reconstruction of vegetation of loess hilly area in Yuxi, which is important to practice.