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东北黑土区水土流失与生态安全综合科学考察工作汇报

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东北黑土区水土流失与生态安全综合科学考察工作汇报. 中国科学院东北地理与农业生态研究所 松 辽 水 利 委 员 会 北京师范大学 2005 年 12 月 30 日 北京. 汇报提纲. 工作进展 汇报的主要内容 下一步工作安排 考察报告提纲. 工 作 进 展. 1. 小型座谈会. 10 余次:农业专题、现状及发展趋势专题、遥感专题、重点治理地区与重点工程专题、经验教训专题、政策专题; 问题的凝练 数据资料的统一 协作. 2. 大型研讨会. - PowerPoint PPT Presentation

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  • 20051230

  • 101.

  • 2.

  • 3. 125-11

  • 4. 23313 (100M)5544004G1713 (700M)280

  • 5.6;;3) 6;,;4) 10.

  • 6. (FAO)ClemenciaFAO FAOFAO

  • :

  • 1.-- :

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    "",,,.,2004,(3):3-4.

    100m100-200m200-300m300-500m500-1000m1000m

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    400803.4588845.630.76888938776.90%

    21441.9610613.260.09184945829.20%

    30315.8816091.710.139261154913.90%

    452561.29115550.601100%

    100m100-200m200-300m300-500m500-1000m1000m

    3328.5923556.0417323.2714000.182468.4223.5560700.05

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    1950S

    1980S

    2000

    1950118735.924292.420.518457.315659.12561.9236.3

    1980118735.936649.5230.930392.7822683.476842.58866.73

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    195024292.418457.315659.12561.9236.3

    198036649.5230392.7822683.476842.58866.73

    200045106.5137575.9427785.088567.571223.29

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    1980S

    2000

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    1980120

    2000170

    1950S

    1980S

    2000

    Sheet3

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  • (118735.9km2)

    Chart1

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    1950S

    1980S

    2000

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    1950S

    1980S

    2000

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    Chart2

    60

    120

    170

    m/km2

    1950118735.924292.420.518457.315659.12561.9236.3

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    19506853.73527214255077662405

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    195060

    1980120

    2000170

    1950S

    1980S

    2000

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  • ()

  • 1,23.

  • 1965111603m2005623SPOT2.5m,10m

  • 200501028 m/km;>500m /km

  • 2

    6-76-7 : 24%~90%

  • 0-23cm 5023-55cm30-

  • 4

  • ---

  • 1.5t458t30.5t22.5t1.3

  • 1565190%600030%15-204000 2004700015%378529%93554%9.6%60%200441871/3 200060kg,189019%28%41%200120350kg6252500400060%

  • 30cm

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  • 2t/ha1000/ha 20cm

    Chart3

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    ()

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    Sheet1

    ()

    (+)

    ()

    (+)

    (cm)

    (kg/hm2)

    Sheet2

    Sheet3

  • 5 32-8mm3.456.6%50

  • 1950-200110101.18015m316.6714.75

  • 6 403-531.5

  • t/km2amm/a12345500500-15001500-25002500-50005000-80000.420.42-1.251.25-2.12.1-4.24.2-6.7

  • 7 /5-8

  • 4/52500

  • 81-2%.95-98%8208

  • 2003000

  • 9 / /

  • 10

  • 10413807 19501985575.3hm

  • 1. ;2. ;3. ;4.

  • 1.1 1.2 1.3 1.4 1.5 1.6 1.7 ()1.8 1.9

  • 2.1 802000 2.2 2.3 50 2.4

    3.1 3.2 3.3 3.4

  • 4.1 4.2 4.3 4.4

  • 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8

  • 1.1 1.2 1.3 2.1 2.2 2.3 2 4

  • 3.1 3.2 ( )3.3

  • 1.1 1.2

    2.1 2.1.1 2.1.2 2.1.3 2.2 2.3

  • 1.1 1.2

    2.1 2.2 2.2

  • !