疏林草原

结果表明S1形成时期植被为疏林草原，气候温暖较湿；

The result indicated that the vegetation of S_ ( 1 ) sedimentary periods was savannah forest grassland , climate was warm and weter ;

贺兰山山地疏林草原主要植物花粉形态观察

The Morphology of Main Plant Species in the Woodlands of the Helan Mountains

沙地植被的恢复可以采取对天然榆树疏林草原在封育的基础上通过人工经营管理，进行定向培育，可以在短期内按照人类自身的目的尽快地得以恢复；

It can be restored in a short-term by hill closure and management .

六盘山疏林草原中度流失区。

The area of moderate water and soil loss of the Liupan Mountains sparse forest grasslands .

晚全新世植被为森林草原或疏林草原，气候干旱偏暖&温凉干旱。

The vegetation of late Holocene was forest grassland and the climate was droughty and warmer or cool and droughty .

2.555～2.300MaBP：植被为温凉偏干的疏林草原，湿度开始下降；

From 2.555 to 2.300 Ma BP , the vegetation was arid grassland with sparse forest , and humidity began to decline ;

2.300～1.770MaBP：植被类型仍为疏林草原，该阶段温度上升，但幅度并不大，湿度基本不变，气候温凉干爽；

From 2.300 to 1.770 Ma BP , the vegetation was grassland with sparse forest , but temperature began to rise and humidity changed little ;

0.922～0.800MaBP：植被为较寒冷干燥的疏林草原，温度降低，降水减少；

From 0.922 to 0.800 Ma BP , the vegetation was grassland with sparse forest in cold and arid climate , while temperature declined and precipitation decreased ;

疏林草原植被的经营管理是一件很有发展潜力的新事物，是沙地植被恢复的新技术、新思路，将会使半干旱地区沙地的治理、沙漠化的防治工作出现一种全新的局面。

Three kinds of steppe-woodlands and management were provided in this paper . The management of steppe-woodland have good developed potential , it will bring sandy land control and desertification combating in semi-land to new phase .

全新世早-中期是一种比较温湿疏林草原干早的草甸草原植被环境，晚期是一种温湿疏林草原比较干旱的草甸草原植被环境。

The early and middle Holocene epoch was in an environment of relative warm and humid veld to arid meadow vegetation ; while the late epoch was in warm and humid veld to relative arid meadow vegetation environment .