基于景观尺度过程模型的长白山净初级生产力空间分布影响因素分析

应用生态学报 ›› 2003, Vol. ›› Issue (5): 659-664.

基于景观尺度过程模型的长白山净初级生产力空间分布影响因素分析

张娜¹, 于贵瑞², 于振良³, 赵士洞²

1. 中国科学院研究生院地球科学学院, 北京 100039;
2. 中国科学院地理科学与资源研究所, 北京 100101;
3. 国家自然科学基金委员会, 北京 100085

收稿日期:2002-09-13 修回日期:2002-12-16
通讯作者: 张娜,女,1973年生,博士,讲师,现主要从事景观生态学、生产力、碳循环、水循环和定量遥感的教学和研究工作,已发表论文10篇.E-mail:zhangna@gscas.ac.cn.
基金资助:
中国科学院“百人计划”生态系统管理的基础生态学过程研究项目(CX10GC0001);国家自然科学基金资助项目(39970613)

Analysis on factors affecting net primary productivity distribution in Changbai Mountain based on process model for landscape scale

ZHANG Na¹, YU Guirui², YU Zhenliang³, ZHAO Shidong ²

1. College of Earth Science, Graduate School, Chinese Academy of Sciences, Beijing 100039, China;
2. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
3. Committee for National Natural Sciences Foundation of China, Beijing 100085, China

Received:2002-09-13 Revised:2002-12-16

摘要/Abstract

摘要： 对长白山自然保护区的净初级生产力(NPP)的空间分布格局进行了模拟,对它们与环境因子和植被因子间的相互关系进行了分析.结果表明,1995年NPP的模拟值平均为0.680kgC·m^-2·年^-1,变幅为0.105～1.241kgC·m^-2·年^-1(82.1%),其中阔叶红松林的NPP最高(1.084kgC·m^-2·年^-1).环境条件决定了长白山植被年NPP空间分布的大趋势.土壤含水量对NPP的限制最大,呈负相关关系(R=-0.65),长白山植物生长一般不存在水分不足的问题.植被的NPP与LAI高度正相关(R=0.81),当LAI增大到4～5m²·m^-2时,NPP出现饱和.植被的NPP与冠层蒸腾量呈显著的正相关关系(R=0.77).岳桦林和阔叶林对环境因子、LAI和冠层蒸腾的响应与其它植被有较大差异.

关键词: 年净初级生产力, 空间分布, 环境条件, 叶面积指数, 冠层蒸腾, 长白山自然保护区, 生长模型, 种间互作, 小麦/蚕豆间作, 磷水平

Abstract: Based on the data received from remote sensing images,the spatial distribution of annual net primary productivity (NPP) was simulated by the process model (EPPML), and the relationships between annual NPP and environmental conditions were analyzed.The results showed that NPPin1995 was 0.680 kg C·m^-2 ·yr.^-1, mostly ranging from 0.105 to 1.241 kg C·m^-2 ·yr.^-1, accounting for 82.1%. The highest NPP (1.084 kg C·m^-2 ·yr.^-1) appears in mixed broad leaved and Korean pine forest. Environmental conditions decide the main trend of the spatial distribution of annual NPP (Carbon) in Changbai Mountain. Soil water content had a negative correlativity with NPP, and the correlation coefficient (R) was -0.65.Therefore, water was sufficient for the growth of plants in Changbai Mountain. NPP was highly correlated with LAI (R=0.81). When LAI was greater than 4～5 m²·m^-2, NPPbecame saturated. NPP was also highly correlated with canopy transpiration (R=0.77). The response of NPP on environmental conditions, LAIand canopy transpiration in Betula ermanii and broad leaved forests were different from those in other vegetation.

Key words: Annual net primary productivity, Spatial distribution, Environmental conditions, Leaf area index, Canopy transpiration, Changbai Mountain Natural Reserve, wheat and faba bean intercropping, species interaction, growth pattern, P level.

中图分类号:

Q948

张娜, 于贵瑞, 于振良, 赵士洞. 基于景观尺度过程模型的长白山净初级生产力空间分布影响因素分析[J]. 应用生态学报, 2003, (5): 659-664.

ZHANG Na, YU Guirui, YU Zhenliang, ZHAO Shidong . Analysis on factors affecting net primary productivity distribution in Changbai Mountain based on process model for landscape scale[J]. Chinese Journal of Applied Ecology, 2003, (5): 659-664.

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