湿地植被叶面积指数对光化学指数和光能利用率关系的影响----基于实测数据和PROSPECT-SAIL模型

doi:10.11849/zrzyxb.20150240

摘要/Abstract

摘要：

光化学指数PRI(Photochemical Reflectance Index)是估算光能利用率LUE(Light Use Efficiency)的一种快速监测的有效指标,分析各种因素对二者的影响是提高估算精度的前提.论文针对三种杭州湾典型湿地植物 [旱柳(Salix matsudana),柽柳(Tamarix chinensis)和芦苇(Phragm itescommunis)],实地观测了其光合作用及日变化,叶面积指数以及同步植被光谱.同时采用PROSPECT-SAIL模型模拟叶面积指数LAI(Leaf Area Index)从小到大变化时植被冠层反射率,分析LAI的变化对冠层PRI的影响.结果表明:1)三种植被在日变化上,芦苇,旱柳和柽柳的PRI和LUE的相关性较好,R²分别为0.581 6,0.524 6和0.514 6;而对同一种植被在不考虑时间变化的条件下,PRI和LUE的相关性会有所减弱,对于LAI较小的冠层,PRI不能精确反映LUE;2)当LAI < 5时,冠层下土壤背景对冠层PRI影响较大,在不同土壤背景下,土壤亮度低的对冠层PRI影响较小;3)当LAI > 5时,土壤背景对冠层PRI影响较小,冠层自身的LAI才是影响PRI和LUE相关性的决定因素.因此,PRI和LUE关系模型还需要进一步探索和完善,引入更精确的模型和参数,不断提高LUE估算的准确度.

Abstract:

Photochemical Reflectance Index (PRI) is an effective index to rapidly estimate Light Use Efficiency (LUE). The analysis of various factors influencing the relationship between these two variables is the premise for improving the precision of estimating LUE. In this paper, three kinds of wetland plants Salix matsudana, Tamarix chinensis and Phragm itescommunis in Hangzhou Bay were selected, and the diurnal variations of their photosynthesis and the synchronous vegetation spectrum were measured. At the same time, the PROSPECT-SAIL model was used to simulate the Leaf Area Index (LAI) of canopies from small to large vegetation, and the effect of LAI on the relationship between canopy PRI and LUE were analyzed. The results showed that: 1) the diurnal variations of PRI and LUE all have good relations for Phragm itescommunis, Salix matsudana and Tamarix chinensis, and the R² were 0.581 6, 0.524 6 and 0.514 6, respectively; however the correlation between PRI and LUE of the same vegetation in different periods of growth will be weakened, since PRI can't accurately estimate the LUE when the canopy LAI is small. 2) When LAI < 5, the soil background has great influence on canopy PRI, and the low brightness of soil has less affected on the canopy PRI. 3) When LAI > 5, the soil background has little influence on canopy PRI, and canopy LAI itself is the key factor that influence the relationships between PRI and LUE. Therefore, the relationships between PRI and LUE needs further exploration, such as model improving and more parameters should be researched in order to constantly improve the accuracy of the LUE estimation.

中图分类号:

TP79

王景旭, 丁丽霞, 程乾. 湿地植被叶面积指数对光化学指数和光能利用率关系的影响----基于实测数据和PROSPECT-SAIL模型[J]. 自然资源学报, 2016, 31(3): 514-525.

WANG Jing-xu, DING Li-xia, CHENG Qian. Research on the Effect of Wetland Vegetation LAI on the Relationship between LUE and PRI by in situ Data and PROSPECT-SAIL Model[J]. JOURNAL OF NATURAL RESOURCES, 2016, 31(3): 514-525.

参考文献

[1] MONTEITH J L. Solar-radiation and productivity in tropical ecosystems [J]. Journal of Applied Ecology, 1972, 9(3): 747-766.
[2] MONTEITH J L. Climate and the efficiency of crop production in Britain [J]. Philosophical Transactions of the Royal Society of London Series B-Biological Sciences, 1977, 281(980): 277-294.
[3] CRAMER W, KICKLIGHTER D W, BONDEAU A. Comparing global models of terrestrial net primary productivity (NPP): Overview and key results [J]. Global Change Biology, 1999, 5(S1): 1-15.
[4] RUIMY A, KERGOAT L, BONDEAU A. Comparing global models of terrestrial net primary productivity (NPP): Analysis of differences in light absorption and light-use efficiency [J]. Global Change Biology, 1999, 5(S1): 56-64.
[5] ADAMS J M, FAURE H, FAURE-DENARD L. Increases in terrestrial carbon storage from the Last Glacial Maximum to the present [J]. Nature, 1990, 348: 711-714.
[6] GAMON J A, SERRANO L, SURFUS J S. The photochemical reflectance index: An optical indicator of photosynthetic radiation use efficiency across species, functional types, and nutrient levels [J]. Oecologia, 1997, 112(4): 492-501.
[7] PENUELAS J, LLUSIA J, PINOL J. Photochemical reflectance index and leaf photosynthetic radiation-use-efficiency assessment in mediterranean trees [J]. International Journal of Remote Sensing, 1997, 18(13): 2863-2868.
[8] PENUELAS J, INOUE Y. Reflectance assessment of canopy CO 2 uptake [J]. International Journal of Remote Sensing, 2000, 21(17): 3353-3356.
[9] GAMON J A, PENUELAS J, FIELD C B. A narrow-wave band spectral index that tracks diurnal changes in photosynthetic efficiency [J]. Remote Sensing of Environment, 1992, 41(4): 35-44.
[10] JUSTICE C O, VERMOTE E, TOWNSHEND J R G. The moderate resolution imaging spectroradiometer (MODIS): Land remote sensing for global change research [J]. IEEE Transactions on Geoscience and Remote Sensing, 1998, 36(4): 1228-1249.
[11] GAMON J A, SURFUS J S. Assessing leaf pigment content and activity with a reflectometer [J]. New Phytologist, 1999, 143: 105-117.
[12] DEMMIG-ADAMS B. Carotenoids and photoprotection in plants: A role for the xanthophyll zeaxanthin [J]. Biochimica et Biophysica Acta, 1990, 1020(1): 1-24.
[13] GILMORE A M. Mechanistic aspects of xanthophyll cycle-dependent photoprotection in higher plant chloroplasts and leaves [J]. Physiologia Plantarum, 1997, 99(1): 197-209.
[14] PENUELAS J, FILELLA I, GAMON J A, et al. Assessing photosynthetic radiation-use efficiency of emergent aquatic vegetation from spectral reflectance [J]. Aquatic Botany, 1997, 58(97): 307-315.
[15] 吴朝阳, 牛铮. 植物光化学植被指数对叶片生化组分参数的敏感性 [J]. 中国科学院研究生院学报, 2008, 25(3): 346-354. [WU C Y, NIU Z. Sensitivity study of photochemical reflectance index to leaf biochemical components. Journal of the Graduate School of the Chinese Academy of Sciences, 2008, 25(3): 346-354. ]
[16] 陈晋, 唐艳鸿, 陈学泓, 等. 利用光化学反射植被指数估算光能利用率研究的进展 [J]. 遥感学报, 2008, 12(2): 23-28. [CHEN J, TANG Y H, CHEN X H, et al. The review of estimating light use efficiency through photochemical reflectance index (PRI). Journal of Remote Sensing, 2008, 12(2): 23-28. ]
[17] 程占慧, 刘良云. 基于叶绿素荧光发射光谱的光能利用率探测 [J]. 农业工程学报, 2010, 26(S2): 74-80. [CHENG Z H, LIU L Y. Detection of vegetation light by using efficiency based on chlorophyll fluorescence spectrum. Transactions of the CSAE, 2010, 26(S2): 74-80. ]
[18] 王宪礼, 李秀珍. 湿地的国内外研究进展 [J]. 生态学杂志, 1997, 16(1): 58-62. [WANG X L, LI X Z. Advances in wetlands. Chinese Journal of Ecology, 1997, 16(1): 58-62. ]
[19] 孙睿, 朱启疆. 气候变化对中国陆地植被净第一性生产力影响的初步研究 [J]. 遥感学报, 2001, 5(1): 58-61. [SUN R, ZHU Q J. Effect of climate change of terrestrial net primary productivity in China. Journal of Remote Sensing, 2001, 5(1): 58-61. ]
[20] 吴统贵, 吴明, 萧江华. 杭州湾滩涂湿地植被群落演替与物种多样性动态 [J]. 生态学杂志, 2008, 27(8): 1284-1289. [WU T G, WU M, XIAO J H. Dynamic of community succession and spiecies diversity of vegetations in beach wetlands of Hangzhou Bay. Chinese Journal of Ecology, 2008, 27(8): 1284-1289. ]
[21] 吴朝阳, 牛铮, 汤泉. 叶片光化学植被指数(PRI)的修正及其敏感 [J]. 光谱学与光谱分析, 2008, 28(9): 2014-2018. [WU C Y, NIU Z, TANG Q. Sensitivity study of a revised leaf photochemical reflectance index (PRI). Spectroscopy and Spectral Analysis, 2008, 28(9): 2014-2018. ]
[22] 蔡博峰, 绍霞. 基于PROSPECT+SAIL模型的遥感叶面积指数反演 [J]. 国土资源遥感, 2007(2): 39-43. [CAI B F, SHAO X. Leaf area index petrieval based on remotely sensed data and PROSPECT+SAIL model. Remote Sensing for Land & Resources, 2007(2): 39-43. ]
[23] 叶子飘, 于强. 光合作用光响应模型的比较 [J]. 植物生态学报, 2008, 32(6): 1356-1361. [YE Z P, YU Q. Comparison of new and several classical models of photosynthesis in response to irradiance. Journal of Plant Ecology, 2008, 32(6): 1356-1361. ]
[24] SOUDANIA K, HMIMINAA G, DUFRÊNE E, et al. Relationships between photochemical reflectance index and light-use efficiency in deciduous and evergreen broadleaf forests [J]. Remote Sensing of Environment, 2014, 144(1): 73-84.
[25] BARTON C V M, NORTH P R J. Remote sensing of canopy light use efficiency using the photochemical reflectance index model and sensitivity analysis [J]. Remote Sensing of Environment, 2001, 78(3): 264-273.
[26] 吴朝阳, 牛铮. 光化学植被指数估算植物光能利用率的研究进展 [J]. 植物生态学报, 2008, 32(3): 734-740. [WU C Y, NIU Z. Review of retrieval light use efficiency using photochemical reflectance index (PRI). Journal of Plant Ecology, 2008, 32(3): 734-740. ]
[27] MAND P, HALLIKA L, PENUELAS J, et al. Responses of the reflectance indices PRI and NDVI to experimental warming and drought in European shrublands along a north-south climatic gradient [J]. Remote Sensing of Environment, 2010, 114(3): 626-636.
[28] 吴朝阳, 牛铮, 汤泉. 小麦生长过程中光能利用率和光化学反射指数的相关性研究 [J]. 光子学报, 2009, 38(1): 138-143. [WU C Y, NIU Z, TANG Q. Relationship between photochemical reflectance index and light use efficiency in growth duration of wheat. Acta Photonica Sinica, 2009, 38(1): 138-143. ]
[29] 吴朝阳, 牛铮, 汤泉. 不同氮,钾施肥处理对小麦光能利用率和光化学植被指数PRI指数的影响 [J]. 光谱学与光谱分析, 2009, 29(2): 455-458. [WU C Y, NIU Z, TANG Q. Effects of N, K fertilization on the relationship between photosynthetic light use efficiency and photochemical reflectance index (PRI). Spectroscopy and Spectral Analysis, 2009, 29(2): 455-458. ]
[30] 黄耀, 王彧, 张稳, 等. 中国农业植被净初级生产力模拟(I) 模型的建立与灵敏度分析 [J]. 自然资源学报, 2006, 21(5): 790-801. [HUANG Y, WANG Y, ZHANG W, et al. Simulation net primary production of agricultural vegetation in China (I): Model establishment and sensitivity analysis. Journal of Natural Resources, 2006, 21(5): 790-801. ]
[31] GARBULSKY M F, FILELLA I A, VERGER J, et al. Photosynthetic light use efficiency from satellite sensors: From global to Mediterranean vegetation [J]. Environmental and Experimental Botany, 2014, 103(3): 3-11.
[32] WU C Y, HUANG W J, YANG Q Y, et al. Improved estimation of light use efficiency by removal of canopy structural effect from the photochemical reflectance index (PRI) [J]. Agriculture, Ecosystems and Environment, 2015, 199: 333-338.
[33] GARBULSKY M F, PENUELAS J, GAMON J, et al. The photochemical reflectance index (PRI) and the remote sensing of leaf, canopy and ecosystem radiation use efficiencies: A review and meta-analysis [J]. Remote Sensing of Environment, 2011, 115(2): 281-297.
[34] SHRESTHA S, BRUECK H, ASCH F. Chlorophyll index, photochemical reflectance index and chlorophyll fluorescence measurements of rice leaves supplied with different N levels [J]. Journal of Photochemistry and Photobiology B: Biology, 2012, 113(8): 7-13.
[35] PENUELAS J, FILELLA T, GAMON J A. Assessment of photosynthetic radiation-use efficiency with spectral reflectance [J]. New Phytologist, 1995, 131(3): 291-296.
[36] SIMS D A, GAMON J A. Relationships between leaf pigment content and spectral reflectance across a wide range of species, leaf structures and developmental stages [J]. Remote Sensing of Environment, 2002, 81(2/3): 337-354.
[37] HILKER T, COOPS N C, HALL F G, et al. Separating physiologically and directionally induced changes in PRI using BRDF models [J]. Remote Sensing of Environment, 2008, 112(6): 2777-2788.
[38] DROLET G G, HUEMMRICH F G, HALL E M. A MODIS-derived photochemical reflectance index to detect inter-annual variations in the photosynthetic light-use efficiency of a boreal deciduous forest [J]. Remote Sensing of Environment, 2005, 98(2): 212-224.
[39] CHEN J M, LIU J, LEBLANC S G, et al. Multi-angular optical remote sensing for assessing vegetation structure and carbon absorption [J]. Remote Sensing of Environment, 2003, 84(4): 516-525.
[40] 王自奎, 吴普特, 赵西宁, 等. 作物间套作群体光能截获和利用机理研究进展 [J]. 自然资源学报, 2015, 30(6): 1057-1066. [WANG Z K, WU P T, ZHAO X N, et al. A review of light interception and utilization by intercropped canopies. Journal of Nature Resource, 2015, 30(6): 1057-1066. ]
[41] HALL F G, HILKER T, COOPS N C, et al. Multi-angle remote sensing of forest light use efficiency by observing PRI variation with canopy shadow fraction [J]. Remote Sensing of Environment, 2008, 112(7): 3201-3211.
[42] 石浩, 王绍强, 黄昆, 等. PnET-CN模型对东亚森林生态系统碳通量模拟的适用性和不确定性分析 [J]. 自然资源学报, 2014, 29(9): 1453-1464. [SHI H, WANG S Q, HUANG K, et al. Application of the PnET-CN model to different forest ecosystems in East Asia. Journal of Natural Resources, 2014, 29(9): 1453-1464. ]