北京市生态涵养区生态系统服务供给与流动的能值分析
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						       		马程, 王晓玥, 张雅昕, 李双成
						  	
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					Emergy analysis of ecosystem services supply and flow in Beijing ecological conservation area
				
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						       		Cheng MA, Xiaoyue WANG, Yaxin ZHANG, Shuangcheng LI
						  	
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		| 表3 2004年、2008年和2012年北京市生态涵养区不同生态组分在系统中重要性比较 | 
	
	
		| Tab. 3 Importance of different ecological components in the system in 2004, 2008 and 2012 | 
	
	
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			    |  主动累加AS |   |  被动累加PS |   |  总累加TS |   |  主动累加/被动累加Q |     | 2004 |   |  2008 |  2012 |   |  2004 |  2008 |  2012 |  2004 |  2008 |  2012 |  2004 |  2008 |  2012 |       | 森林生态系统 |  1.4E+20 |  1.7E+20 |  3.0E+20 |   |  8.7E+19 |  1.3E+20 |  2.2E+20 |   |  2.3E+20 |  3.1E+20 |  5.1E+20 |   |  1.61 |  1.32 |  1.33 |     | 土壤水 |  3.3E+19 |  5.7E+19 |  1.3E+20 |  9.5E+18 |  3.3E+19 |  5.4E+19 |  4.2E+19 |  9.0E+19 |  1.8E+20 |  3.41 |  1.73 |  4.34 |     | 土壤营养 |  6.8E+19 |  8.2E+19 |  1.4E+20 |  9.8E+18 |  1.4E+19 |  2.5E+19 |  7.8E+19 |  9.7E+19 |  1.7E+20 |  6.96 |  5.84 |  5.72 |     | 生物量 |  4.1E+19 |  3.5E+19 |  2.5E+19 |  6.8E+19 |  8.4E+19 |  1.4E+20 |  1.1E+20 |  1.2E+20 |  1.7E+20 |  0.59 |  0.41 |  0.18 |     | 农田生态系统 |  7.8E+20 |  5.0E+20 |  1.5E+20 |  2.3E+20 |  2.0E+20 |  2.9E+20 |  1.0E+21 |  7.0E+20 |  4.4E+20 |  3.45 |  2.47 |  0.52 |     | 土壤水 |  7.9E+19 |  6.6E+19 |  1.1E+19 |  8.5E+19 |  9.2E+19 |  2.2E+20 |  1.6E+20 |  1.6E+20 |  2.3E+20 |  0.93 |  0.72 |  0.05 |     | 土壤营养 |  7.8E+19 |  4.9E+19 |  1.9E+19 |  5.1E+19 |  3.6E+19 |  1.3E+19 |  1.3E+20 |  8.5E+19 |  3.2E+19 |  1.51 |  1.36 |  1.47 |     | 生物量 |  6.2E+20 |  3.9E+20 |  1.2E+20 |  9.1E+19 |  7.6E+19 |  6.1E+19 |  7.1E+20 |  4.6E+20 |  1.8E+20 |  6.90 |  5.11 |  2.00 |     | 水域生态系统 |  6.5E+19 |  1.5E+20 |  2.9E+20 |  2.3E+19 |  1.1E+20 |  2.3E+20 |  8.8E+19 |  2.6E+20 |  5.2E+20 |  2.85 |  1.36 |  1.27 |     | 上游 |  5.2E+19 |  8.3E+19 |  2.2E+20 |  1.4E+19 |  7.4E+19 |  1.9E+20 |  6.5E+19 |  1.6E+20 |  4.0E+20 |  3.79 |  1.12 |  1.16 |     | 下游 |  1.4E+19 |  6.5E+19 |  7.6E+19 |  9.3E+18 |  3.5E+19 |  4.3E+19 |  2.3E+19 |  1.0E+20 |  1.2E+20 |  1.47 |  1.85 |  1.78 |     | 地下水 |  8.5E+15 |  1.0E+16 |  3.3E+16 |  6.6E+16 |  4.8E+16 |  4.9E+17 |  7.4E+16 |  5.8E+16 |  5.2E+17 |  0.13 |  0.22 |  0.07 |     | 城市系统 |  6.5E+21 |  9.9E+21 |  2.3E+22 |  2.4E+21 |  9.7E+21 |  2.4E+22 |  8.9E+21 |  2.0E+22 |  4.7E+22 |  2.71 |  1.03 |  0.95 |      
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