| 1. | A large number of abandoned lands of mines need to be regulated
大量的矿山废弃地亟待整治。 |
| 2. | Losing irrigation water may mean either abandoning land or less double cropping
灌溉用水短缺的直接影响不是废弃农田，就是减少一年两作。 |
| 3. | Local people ' s governments at all levels shall adopt measures to ameliorate medium - and low - yielding land and consolidate idle and scattered and abandoned land
地方各级人民政府应当采取措施，改造中、低产田，整治闲散地和废弃地。 |
| 4. | It ' s an urgent task for our country to rehabilitate the damaged ecosystem . and more attention should be paid to the abandoned land reclamation
恢复受损伤的生态系统成为我国当前面临的特别紧迫的任务，其中废弃地的恢复又是首先应该给予重视的。 |
| 5. | During the process of reclaiming the abandoned land in mine , the research for landscape succession and spatial pattern is playing an important role in ecological security , land resource reuse and sustainable development
在矿区废弃地的恢复中，景观演变的过程及空间格局研究，对矿区的生态安全、土地资源再利用和可持续发展具有重要的作用。 |
| 6. | The average of shannon - wiener diversity index was 1 . 5481 in typical steppe abandoned land , which was only 55 % of natural grassland , while it was 1 . 3492 in meadow steppe abandoned steppe
典型草原撂荒地shannon - wiener多样性指数的平均值为1 . 5481 ，是天然草地的55 ，草甸草原带撂荒地shannon - wiener多样性指数的平均值为1 . 3492 ，是天然草地的50 。 |
| 7. | Currently , land resources supply is under tense situation in our country , so the regulation of abandoned lands of mines , has great significance to slowing down of the decrease of arable area throughout the country and improving land use efficiency
在当前我国土地资源供应极为紧张的局面下，矿山废弃地整治对于减缓全国耕地面积下降、提高土地利用效率意义重大。 |
| 8. | To estimate according to the " national land development and planning " issued by the ministry of land and resources on march 2003 , the potential of land that can be replenished is 23 , 000 mu through the regulation to abandoned land of mines in the whole country , which occupies 11 % of total potential of replenishment land
据2003年3月国土资源部颁布的《全国土地开发整理规划》估算，全国通过矿山废弃地整治可补充耕地的潜力约为2300万亩，占补充耕地总潜力的11 % 。 |
| 9. | In preliminary vegetation succession from abandoned land community to herbage community , the increasing degree is higher . and with further succession which is herbage - shrub - early forest - liaotungesis forest community it goes down gradually . ( 2 ) the water content in 0 - 5cm soil layer increases significantly and the water content in > 5cm soil layer decreases in the course of vegetation succession
演替初期(弃耕-地先锋群落草本群落)有机碳含量的增加幅度较大，而后，随植被的进一步演替(草本群落灌丛群落早期森林群落辽东栎群落) ，有机碳含量增加幅度变小。 |
| 10. | The organic matter , total n , hydrolytic n were increased , then reduced with the increase of abandoned time . the loss of organic c got up to 59 . 4 % in abandoned land . in 0 - 20cm , the sand content of 0 . 25 - 0 . 05mm was increased gradually , the average content of sand in the abandoned land was up to 76 . 84 % , the sand contents of silt and sand was gradually reduced , the soil mechanic compose became coarse
随撂荒年限的增加，土壤有机质、全氮、碱解氮等主要养分均表现出先降低后增加的趋势；撂荒地有机碳的损失平均达到59 . 4 ；在撂荒地表面0 - 20cm范围内， 0 . 25 - 0 . 05mm粒径的砂粒含量逐渐增加，各撂荒地砂粒平均含量达76 . 84 ，粉粒和粘粒含量逐渐降低，土壤机械组成出现粗化现象。 |
