ESTIMATION OF FODDER PRODUCTION IN SAHELIAN RANGELANDS (GOURMA, MALI) USING ENVISAT/MERIS OBSERVATIONS

机译：利用ENVISAT / MERIS观测值估算撒哈拉山脉地区（古马尔，马里）的饲料产量

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Many studies on the intercomparison of satelliternbiophysical products such as LAI, FAPAR and FCoverrnhave been recently performed [1, 5, 9] but only a fewrndeal with quantitative assessment of annual fodderrnproduction in semi-arid regions. However, this variablernis essential to monitor drought impact on grazing and tornassess livestock potential production and forecastrnpastoral risks [8].rnThe objectives of this study are to investigate thernpotentialities of ENVISAT/MERIS observations tornestimate herbage production in Sahelian rangelandsrnthrough direct comparison of field measurements withrnsatellite indices. To this end, in situ measurementsrncarried out at the AMMA-CATCH Observatory site inrnthe Gourma region, Mali [10] during the 2007-2011rnperiod are used to evaluate indices derived from:rnENVISAT/MERIS. A comparison with Terra/AquarnMODIS data is also performed.rnDestructive measurements of herbaceous standing massrnwere carried out during growing seasons in 26 sitesrnalong 1km long transects following a stratified randomrnsampling technique [6]. Sites are located on differentrnsoil types which colour differently influences the scenernreflectance. Field estimates are then directly comparedrnto times series of satellite indices and biophysicalrnproducts over the whole growing season from June tornSeptember. Relationships are sought between herbagernproduction and satellite indices. Finally, time series ofrnfodder maps are generated using the best relationships.

机译：最近对LAI，FAPAR和FCoverrn等卫星生物物理产品的比对进行了许多研究[1、5、9]，但对半干旱地区年饲料产量进行定量评估的交易很少。然而，该变量对于监测干旱对放牧和龙卷风牲畜潜在产量和预测牧场风险的影响是必不可少的[8]。本研究的目的是通过直接比较实地测量值与卫星指标来调查ENVISAT / MERIS观测值对萨赫勒牧场中草食性牧草生产的潜力。。为此，在2007年至2011年期间，在马里古尔玛地区AMMA-CATCH天文台进行的原位测量[10]用于评估源自ENVISAT / MERIS的指标。还使用了分层随机采样技术[26]，在生长季节中，对26个站点中长1km长的样点进行了草本立地质量的破坏性测量[6]。场地位于不同的土壤类型上，颜色会不同地影响场景的反射率。然后将实地估计值直接与6月至9月整个生长季的卫星指数和生物物理产物的时间序列进行比较。在herbagernproduction和卫星索引之间寻求关系。最后，使用最佳关系生成了饲料地图的时间序列。

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《Sentinel-3 OLCI/SLSTR and MERIS/(A)ATSR workshop》|2012年|1-6|共6页
会议地点 Frascati(IT)
作者
Auda Y.; Mougin E.; Hiernaux P.; Diawara M.; Soumaguel N.; Nguyen C.; Kergoat L.; Dardel C.;
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Géosciences Environnement Toulouse (GET) Observatoire Midi-Pyrénées, Université de Toulouse, CNRS, IRD 14 avenue Edouard Belin, 31401 Toulouse, France Yves.Auda@get.obs-mip.fr;

Géosciences Environnement Toulouse (GET) Observatoire Midi-Pyrénées, Université de Toulouse, CNRS, IRD 14 avenue Edouard Belin, 31401 Toulouse, France;

Géosciences Environnement Toulouse (GET) Observatoire Midi-Pyrénées, Université de Toulouse, CNRS, IRD 14 avenue Edouard Belin, 31401 Toulouse, France;

Géosciences Environnement Toulouse (GET) Observatoire Midi-Pyrénées, Université de Toulouse, CNRS, IRD 14 avenue Edouard Belin, 31401 Toulouse, France;

Centre IRD Quartier Hippodrome B.P. 2528 Bamako, Mali;

Géosciences Environnement Toulouse (GET) Observatoire Midi-Pyrénées, Université de Toulouse, CNRS, IRD 14 avenue Edouard Belin, 31401 Toulouse, France;

Géosciences Environnement Toulouse (GET) Observatoire Midi-Pyrénées, Université de Toulouse, CNRS, IRD 14 avenue Edouard Belin, 31401 Toulouse, France;

Géosciences Environnement Toulouse (GET) Observatoire Midi-Pyrénées, Université de Toulouse, CNRS, IRD 14 avenue Edouard Belin, 31401 Toulouse, France;

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1. A leaf area index data set acquired in Sahelian rangelands of Gourma in Mali over the 2005–2017 period [J] . Mougin Eric, Diawara Mamadou Oumar, Soumaguel Nogmana, Earth System Science Data Discussions . 2019,第2期

机译：2005-2017年期间在马里古尔玛的萨赫勒地区的叶面积指数数据集
2. A leaf area index data set acquired in Sahelian rangelands of Gourma in Mali over the 2005–2017 period [J] . Eric Mougin, Mamadou Oumar Diawara, Nogmana Soumaguel, Earth System Science Data . 2019,第2期

机译：在2005 - 2017年期间，马里甘肃雕刻园牧场获得的叶子区域指数数据集
3. Sahelian rangeland response to changes in rainfall over two decades in the Gourma region, Mali [J] . Hiernaux P, Mougin E, Diarra L, Journal of Hydrology . 2009,第1a2期

机译：萨赫勒牧场对马里古尔马地区过去20年降雨变化的响应
4. ESTIMATION OF FODDER PRODUCTION IN SAHELIAN RANGELANDS (GOURMA, MALI) USING ENVISAT/MERIS OBSERVATIONS [C] . Auda Y., Mougin E., Hiernaux P., Sentinel-3 OLCI/SLSTR and MERIS/(A)ATSR workshop . 2012

机译：使用Envisat / Meris观察估算Sahelian Rangelands（Gorma，Mali）的饲料生产
5. Sahelian 'white gold' and rural poverty-environment interactions: The political ecology of cotton production, environmental change, and household food economy in Mali. [D] . Moseley, William George. 2001

机译：萨赫勒地区的“白金”与农村贫困与环境的相互作用：马里的棉花生产，环境变化和家庭粮食经济的政治生态学。
6. A leaf area index, LAI, data set acquired in Sahelian rangelands (Gourma, Mali) over the 2005–2017 period [O] . Eric Mougin, Mamadou Oumar Diawara, Nogmana Soumaguel, 2018

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7. Estimation of Crop Gross Primary Production (GPP): I. Impact of MODIS Observation Footprint and Impact of Vegetation BRDF Characteristics. [R] . Zhang, Q., Cheng, Y. B., Lyapustin, A. I., 2014

机译：作物总生产量估算（Gpp）：I。mODIs观测足迹的影响和植被BRDF特征的影响。

ESTIMATION OF FODDER PRODUCTION IN SAHELIAN RANGELANDS (GOURMA, MALI) USING ENVISAT/MERIS OBSERVATIONS

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