An analysis on the effect of cultivated grassland on soil respiration rate was conducted for the abandoned land and the transferred farmland in the Ordos Sandy land Improvement Experimental Station.
在鄂尔多斯沙地改良试验站的撂荒地和退耕地，测定和分析了多年生人工草地对土壤呼吸速率的影响。
The land of mulberry fields, tea plantations, orchards, nurseries of young plants, forest land, reed land, natural and man-made grassland and other lan are not included in cultivated land.
但不包括属于专业性桑园、茶园、果园、果木苗圃、林地、芦苇地、天然或人工草地面积。
Average pollen concentration in the modern deposits is much less than those in surface soils on both the grassland and the cultivated land.
现代沉积旋回的孢粉平均浓度，远低于草地和坡耕地表土，这表明草地和坡耕地土壤不是沉积泥沙的主要来源。
The results indicate: 1. In alpine region, the productivity of the grassland can be improved by establishing mixture grassland of cultivated perennial grasses.
结果表明：1.在高寒地区，通过建植多年生混播禾草人工草地可达到提高草地生产力的目的。
The land use change mainly occurred in cultivated land, built-up land, and grassland, and the dynamic degree was 13.6%, 8.0%, and 7.7%, respectively.
疏勒河中游主要土地利用变化发生在耕地、建设用地和牧草地，土地利用动态度分别为13.6%、8.0%和7.7%；
Soluble nitrogen concentration in surface runoff from cultivated land is highest, and then is in runoff from village, barren grassland and orchard.
不同地表径流中的溶解态氮浓度的差别较大，村庄最高，其次是耕地、荒草坡、林果地。
Soluble nitrogen concentration in surface runoff from cultivated land is highest, and then is in runoff from village, barren grassland and orchard.
不同地表径流中的溶解态氮浓度的差别较大，村庄最高，其次是耕地、荒草坡、林果地。
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