黄土高原植被对位配置技术研究

黄土高原的植被建设 ,既要遵循自然植被的地带性分布规律 ,又要充分考虑不同地形部位的小气候分异规律 ,坚持地形小气候条件与植物种生态位条件的相互对位配置。宏观环境的降水总量不足、水土流失严重和微观环境的风速、相对湿度是影响植物水量平衡 ,进而影响植物正常生长发育的主要因素。在不同的地类灵活采用隔坡软埂水平阶 ,漏斗式、燕尾式、竹节状聚流坑等径流聚集工程 ,均可使林木成活率和保存率达到 90 %以上 ,生长量提高 1倍以上。

Study on Para Position Allocation Technology of Vegetation in the Loess Plateau

The vegetation building of the loess plateau should not only adhere to the laws of regional distribution of natural vegetation, but also fully consider the different laws of microclimate in different topography and location and persist in mutual para position allocation under the conditions of microclimate and plant species ecology. Inadequate total volume of precipitation of macro environment, severe soil and water loss and wind speed and relative humidity of micro environment are the main factors to affect the water balance and normal growth of plants. All the measures of runoff collecting works, such as inter slope earth edge level terraces, funnel type, swallow tail type and bamboo joint type flexibly adopted for different types of geography can make the survival rate and preserve rate of trees more than 90% and growing speed one time faster.