基于AVIM的中国陆地生态系统净初级生产力模拟

doi:10.11867/j.issn.1001-8166.2005.03.0345

地球科学进展 ›› 2005, Vol. 20 ›› Issue (3): 345 -349. doi: 10.11867/j.issn.1001-8166.2005.03.0345

何勇 ¹，董文杰 ^1,2，季劲均 ^1,3，丹利 ¹

1.中国科学院大气物理研究所东亚区域气候—环境重点实验室，北京 100029;
2.中国气象局国家气候中心，北京 100081;
3.中国科学院地理科学与自然资源研究所，北京 100101

收稿日期:2004-04-15 修回日期:2004-08-13 出版日期:2005-03-25
通讯作者: 何勇 E-mail:heyong@cma.gov.cn
基金资助:
国家自然科学基金重点项目“植被大气双向耦合的区域集成环境模式系统的研制和应用”（编号：40231006）；国家重点基础研究发展规划项目“北方干旱半干旱地区有序人类活动的环境效应的综合分析和对策建议”（编号：G1999043408）资助.

THE NET PRIMARY PRODUCTION SIMULATION OF TERRESTRIAL ECOSYSTEMS IN CHINA BY AVIM

HE Yong ¹; DONG Wenjie ^1,2; JI Jinjun ^1;3; DAN Li ¹

1.Key Laboratory of Regional Climate-Environment Research for Template East Asia, Institute of Atmospheric Physics,Chinese Academy of Sciences, Beijing 100029,China;
2.National Climate Center,CMA,Beijing 100081, China;
3. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China

Received:2004-04-15 Revised:2004-08-13 Online:2005-03-25 Published:2005-03-25

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利用AVIM（植被与大气相互作用模式）模拟了现代中国陆地生态系统NPP的分布并计算了全国NPP的碳总量。研究结果表明我国现代陆地生态系统的年NPP变化范围在0~1 389 gC/m²之间，年平均值为355 gC/m²，年吸收3.33 Pg的大气碳。中国陆地植被NPP呈现自东向西逐渐减小的趋势，NPP的最大值出现在云南西双版纳地区，最小值分布于青藏高原以及新疆地区。中国现代陆地植被NPP主要分布于小于100 gC/(m²·a)、300~500 gC/(m²·a)以及500~700 gC/(m²·a)3个区间，其占总计算值的比例都超过了20%以上；大于1 000 gC/(m²·a)的NPP最少，只占总数的2.15%。对中国陆地植被NPP与气候的相关性分析表明，降水是影响我国陆地生态系统NPP的主要原因。

关键词: AVIM, 陆地生态系统, 净初级生产力, 气候变化

In this paper we used an Atmosphere-Vegetation Interaction Model (AVIM) that has been validated at regional and global scales to estimate the NPP (net primary production) variation of modern Chinese terrestrial ecosystems and its responses to the climate change. AVIM consists of two inter-coupled components: physical process and eco-physiological process, involving the mater and energy balance between the atmosphere, vegetation and soil. Chinese vegetation is classified 9 types and soil texture is classified into 6 types. The parameters of eco-physiological processes for each vegetation type for AVIM are collected. Daily weather data for 0.5×0.5 grid cells as the forcing of the model are generated from the monthly climate data, coming from the climate research unit, University of East Anglia, UK. The estimated NPP of chinese vegetation changes from 0 to 1 389 gC/(cm²·a), averaging 355 gC/（cm²·a）. Vegetation from the rain forest has the high NPP value, and the low NPP corresponding to the shrub with no cover. The NPP decreases from east to west in China, with the highest NPP occuring at the south area of Yunnan Province, and the lowest appearing at Tibet and Xinjiang areas. Total NPP of the terrestrial ecosystems is 3.33 Pg C, suggesting that such amount of carbon is absorbed from the atmosphere by the vegetation in China. Our work also shows that precipitation is the main factor affecting the NPP of terrestrial ecosystems in China.

Key words: AVIM, Terrestrial ecosystems, Net primary productivity, Climate change.

中图分类号:

P935.1
P467

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