收稿日期: 2004-04-15
修回日期: 2004-08-13
网络出版日期: 2005-03-25
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
Received date: 2004-04-15
Revised date: 2004-08-13
Online published: 2005-03-25
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。
何勇 , 丹利 , , 董文杰 , 季劲均 , . 基于AVIM的中国陆地生态系统净初级生产力模拟[J]. 地球科学进展, 2005 , 20(3) : 345 -349 . DOI: 10.11867/j.issn.1001-8166.2005.03.0345
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.
[1] Petit J R, Jouzel J, Raynaud D N, et al. Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica [J]. Nature, 1999, 399: 429-436.
[2] Richars J G, Evan H D, Paul G F, et al. Primary productivity of planet Earth: Biological determinants and physical constrains in terrestrial and aquatic habits [J]. Global Change Biology, 2001,7: 849-882.
[3] Wittaker R H, Likens G E. The biosphere and man [A]. In: Wittaker R H,Likens G E,eds. Primary Productivity of the Biosphere [C]. Berlin:Springer,1977.305-328.
[4] Lieth H. Primary production: Terrestrial ecosystem [J]. Human Ecology, 1973, 1: 303-332.
[5] Cramer W, Kicklighter D Q, Bondeau A, et al. Comparing global models of terrestrial net primary productivity (NPP): Overview and key results [J]. Global Change Biology, 1999, 5 (suppl.):1-15.
[6] Zhou Guangsheng, Zhang Xinshi. Study on npp of natural vegetation in China under global climate change [J]. Acta Phytoecologica Sinica, 1996, 20(1): 11-19.
[7] Sun Rui, Zhu Qijiang. Effect of climate change of terrestrial net primary productivity in China [J]. Journal of Remote Sensing, 2001, 5(1): 58-61.
[8] Piao Shilong, Fang Jingyun, Guo Qinghua. Terrestrial net primary production and its spatio-temporal patterns in China during 1982-1999 [J]. Acta Scientiarum Naturilium Universitatis Pekinensis, 2001,37(4): 563-569.
[9] Tao Bo, Li Kerang, Shao Xuemei, et al. Temporal and spatial patterns of net primary production of terrestrial ecosystems in China [J]. Acta Geographica Sinaca, 2003, 58(3): 372-380.
[10] Ji J J. A climate-vegetation interaction model: Simulating physical and biological processes at the surface [J]. Journal of Biogeography, 1995,22:445-451.
[11] Ji J J, Hu Y C. A simple land surface process model for use in the climate study [J]. Acta Meterologia Sinica, 1989, 3: 344-353.
[12] Lu Jianghua. The Interaction Simulation between Atmosphere and Vegetation under the Regional and Annual Scales [D]. Beijing: Institute of Atmospheric Physics of CAS, 1999.
[13] Li Yinpeng, Ji Jinjun. Simulations of carbon exchange between global terrestrial ecosystems and the atmosphere [J]. Acta Geographica Sinaca, 2001, 56(4): 379-389.
[14] Liu Mingliang. Land-use/Cover change and Terrestrial Ecosystem Phytomass Carbon Pool and Production in China [D]. Beijing: Institute of Remote Sensing Applications of CAS, 2001.
[15] Liu Shirong, Xu Deying, Wang Bin,et al. The impacts of climate change on productivity of the forests in China [A]. In: Xu Deying eds. A Study on the Impacts of Climate Change on Forests in China [C]. Beijing: China Science and Technology Press, 1997.75-93.
/
| 〈 |
|
〉 |
甘公网安备62010202000687
