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人工园林大面积种植区植被净初级生产力时空变化研究
引用本文:顾泽贤,赵筱青,普军伟,郑田甜,卢飞飞,谈树成. 人工园林大面积种植区植被净初级生产力时空变化研究[J]. 长江流域资源与环境, 2018, 27(2): 421-432. DOI: 10.11870/cjlyzyyhj201802022
作者姓名:顾泽贤  赵筱青  普军伟  郑田甜  卢飞飞  谈树成
作者单位:(1.云南大学资源环境与地球科学学院,云南 昆明 650091;;2.云南大学“一带一路”战略研究院,云南 昆明 650091)
基金项目:国家自然科学基金项目,“第二批云岭学者培养”项目
摘    要:云南西南地区自然资源丰富,近年来,随着社会经济的快速发展,橡胶、茶园和桉树等人工园林大规模种植主要占用了天然林和耕地,土地利用结构和空间布局发生了很大变化。为了探讨土地利用/覆被变化对植被净初级生产力(NPP)的影响,以人工园林大面积种植区西盟县为研究区,运用综合模型、CASA模型和MODIS产品(BIOME-BGC模型),对西盟县2000年、2005年、2010年和2015年各地类NPP的时间变化和空间分布特征进行分析。结果表明:(1)2000~2015年,CASA模型模拟的西盟县NPP呈先减少后增加的趋势,MODIS模型模拟的NPP值变化趋势与CASA模型一致,综合模型则呈现逐年增加的趋势;(2)西盟县NPP的空间分布形态从西至东均呈“低值-高值-低值-高值-低值”(“M”)变化,与西盟县水热资源的分布特征和土地利用/覆被变化有关,西盟县NPP空间变化主要集中于人工园林种植区;(3)3种模型中,CASA模型和MODIS产品(BIOME-BGC模型)比综合模型更适用于地形气候复杂多样的山区NPP的模拟计算,其中CASA模型空间精度更高。

关 键 词:人工园林大面积种植区  植被净初级生产力  时空变化  土地利用/覆被变化  CASA模型  a region with large-area artificial  NPP  temporal and spatial variation  land use/cover change  CASA model

Study on Spatio-temporal Variation of Net Primary Productivity in a Region With Large-area Artificial Garden
GU Ze-xian,ZHAO Xiao-qing,PU Jun-wei,ZHENG Tian-tian,LU Fei-fei,TAN Shu-cheng. Study on Spatio-temporal Variation of Net Primary Productivity in a Region With Large-area Artificial Garden[J]. Resources and Environment in the Yangtza Basin, 2018, 27(2): 421-432. DOI: 10.11870/cjlyzyyhj201802022
Authors:GU Ze-xian  ZHAO Xiao-qing  PU Jun-wei  ZHENG Tian-tian  LU Fei-fei  TAN Shu-cheng
Affiliation:(1.College of Resource Environment and Earth Science, Yunnan University, Kunming 650091, China;2. The Institute of the “Belt and Road” Strategy, Yunnan University, Kunming 650091, China)
Abstract:Southwest of Yunnan is wealthy in natural resources.With the rapid development of social economy in recent years,artificial-garden,including rubber,tea and eucalyptus were planted on a large scale,which mainly occupied natural forests and arable land.It resulted in changes of land-use structure and space distribution.In order to discuss the effect of land use/cover change on the net primary productivity of vegetation,the paper analyzed temporal variation and spatial distribution of NPP using comprehensive model,CASA model and MODIS products(BIOME-BGC model) of 2000,2005,2010 and 2015 in Ximeng County.The results showed that:(1) the NPP of Ximeng County was affected by meteorological change,vegetation types and growth status,and human activities,the values of both BIOME-BGC model and CASA model decreased firstly and then increased,whereas the values of comprehensive model kept increasing during 2000 to 2015;(2) the spatial distribution pattern of vegetation NPP change present as "low-high-low-high-low" type ("M") from west to east in Ximeng County.It was related to the distribution characteristics of hydro-thermal resources land use/cover change,the spatial distribution change of NPP in Ximeng county was mainly concentrated in artificial-garden planting area;(3) In the three NPP models,the CASA model and the MODIS(BIOME-BGC) model were more suitable for the simulation of NPP in mountainous terrain with complex terrain and climate,and the CASA model was more accurate.
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