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| 1 | Spectral matching techniques (SMTs) and automated cropland classification algorithms (ACCAs) for mapping croplands of Australia using MODIS 250-m time-series (2000–2015) data显示文摘Mapping croplands,including fallow areas,are an important measure to determine the quantity of food that is produced,where they are produced,and when they are produced(e.g.seasonality).Furthermore,croplands are known as water guzzlers by consuming anywhere between 70%and 90%of all human water use globally.Given these facts and the increase in global population to nearly 10 billion by the year 2050,the need for routine,rapid,and automated cropland mapping year-after-year and/or season-after-season is of great importance.The overarching goal of this study was to generate standard and routine cropland products,year-after-year,over very large areas through the use of two novel methods:(a)quantitative spectral matching techniques(QSMTs)applied at continental level and(b)rule-based Automated Cropland Classification Algorithm(ACCA)with the ability to hind-cast,now-cast,and future-cast.Australia was chosen for the study given its extensive croplands,rich history of agriculture,and yet nonexistent routine yearly generated cropland products using multi-temporal remote sensing.This research produced three distinct cropland products using Moderate Resolution Imaging Spectroradiometer(MODIS)250-m normalized difference vegetation index 16-day composite time-series data for 16 years:2000 through 2015.The products consisted of:(1)cropland extent/areas versus cropland fallow areas,(2)irrigated versus rainfed croplands,and(3)cropping intensities:single,double,and continuous cropping.An accurate reference cropland product(RCP)for the year 2014(RCP2014)produced using QSMT was used as a knowledge base to train and develop the ACCA algorithm that was then applied to the MODIS time-series data for the years 2000–2015.A comparison between the ACCA-derived cropland products(ACPs)for the year 2014(ACP2014)versus RCP2014 provided an overall agreement of 89.4%(kappa=0.814)with six classes:(a)producer’s accuracies varying between 72%and 90%and(b)user’s accuracies varying between 79%and 90%.ACPs for the individual years 2000–2013 and 2015(ACP2000–ACP2013,ACP2015)showed very strong similarities with several other studies.The extent and vigor of the Australian croplands versus cropland fallows were accurately captured by the ACCA algorithm for the years 2000–2015,thus highlighting the value of the study in food security analysis. | Pardhasaradhi Teluguntla Prasad S.Thenkabail Jun Xiong Murali Krishna Gumma Russell G.Congalton Adam Oliphant Justin Poehnelt Kamini Yadav Mahesh Rao Richard Massey | 2017 | International Journal of Digital Earth2017，10，9： | 2 |
| 2 | Newer methods over the conventional diagnostic tests for tuberculous meningitis: do they really help? 显示文摘 | Baveja CP Gumma V Jain M | 2009 | Trop Doer2009，39，1： | 1 |
| 3 | Newer methods over the conventional diagnostic tests for tuberculous meningitis:do they really help?显示文摘 | Baveja CP Gumma V Jain M | 2009 | Trop Doct2009，39，1： | 1 |
| 4 | A global map of rainfed cropland areas (GMRCA) at the end of last millennium using remote sensing显示文摘 | Biradar C M Thenkabail P S Noojipady P Li Y Dheeravath V Turral H Velpuri M Gumma M K Gangalakunta O R P Cai X L Xiao X M Schull M A Alankara R D Gunasinghe S Mohideen S | | 0，，02： | 1 |
| 5 | GasadsorptionpropertiesofthechromiumGbasedmetalGorganicframeGworkMILG101显示文摘 | ChowdhuryP BikkinaC GummaS | 2009 | TheJournalofPhysicalChemistryC2009，113，： | 1 |
| 6 | Comparison of adsorption isotherms on Cu-BTC metal organic frameworks synthesized from different routes显示文摘 | Pradip Chowdhury Chaitanya Bikkina Dirk Meister Frieder Dreisbach Sasidhar Gumma | 2008 | Microporous and Mesoporous Materials2008，，1： | 1 |
| 7 | Newer methods over the conventional diagnostic test for tuberculous meningitis:do they really help?显示文摘 | Bava JA Gumma V Jain M | 2009 | Tyop Doct2009，39，1： | 1 |
| 8 | Global irrigated area map (GIAM),derived from remote sensing,for the end of the last millennium显示文摘 | Thenkabail P S Biradar C M Noojipady P Dheeravath V Li Y J Velpuri M Gumma M Reddy G P O Tutral H Cai X L Vithanage J Schull M Dutta R | | 0，，14： | 1 |
| 9 | Gas Adsorption Properties of the Chromium-based Metal Organic Framework MILIO1 显示文摘 | Chowdhury P Bikkina C Gumma S | 2009 | Journal of Physical Chemistry C2009，113，16： | 1 |
| 10 | Gas adsorption properties of the chromium-based metal organic framework MIL-101 显示文摘 | Chowdhury P Bikkina C Gumma S | 2009 | The Journal of Physical Chemistry C2009，113，16： | 1 |
| 11 | 显示文摘 | Chowdhury P Bikkina C Gumma S | 2009 | American Chemical Society2009，113，16： | 1 |
| 12 | Effect of adsorbent history on adsorption characteristics of MIL-53(A1) metal organic framework显示文摘 | Mishra P Edubilli S Uppara H P Mandal B Gumma S | 2013 | Langmuir2013，29，12： | 1 |
| 13 | Adsorption of dichloromethane on activated carbon 显示文摘 | Chetan B Tomar D Gumma S | 2010 | Journal of Chemical and Engineering Data2010，55，4： | 1 |
| 14 | IL-18 polymorphisms in hepatitis B virus related liver disease显示文摘 | Vijay Kumar Karra Phani Kumar Gumma Soumya Jyoti Chowdhury Rajesh Ruttala Sunil Kumar Polipalli Anita Chakravarti Premashis Kar | 2015 | Cytokine2015，，2： | 1 |
| 15 | Selection of hyperspectral narrow bands(HNBs) and composition of hy- perspectral two band vegetation indices(HVIs) for biophysi- cal characterization and discrimination of crop types using field reflectance and Hyperion/EO 1 data 显示文摘 | Tbenkabail P S Mariotto L Gumma M M | 2013 | IEEE Journal Selected Topics in Applied Earth Observations and Remote Sensing2013，6，2： | 1 |
| 16 | Newer methods over the conventional diagnostic tests for tuberculous meningitis:do they really help?显示文摘 | Baveja CP Gumma V Jain M et a1 | 2009 | Trop Doct2009，39，1： | 1 |
| 17 | Sorghum germplasm from West and Gentral Africa maintained in the ICRISAT genebank: Status,gaps,and diversity显示文摘The genebank at ICRISAT maintains 8020 accessions of sorghum from 16 West and Central African countries. Geographical gaps and diversity were assessed in the collection. Using the passport data of 3991 accessions for which georeferenced data were available, a total of386 districts(gaps) located in 11 West and Central African countries were identified as geographical gaps. Burkina Faso with 140 and Nigeria with 118 districts were identified as countries with major geographical gaps. The collection of 43 accessions of wild species represented only three species belonging to Sorghum bicolor ssp. drummondii and ssp.verticilliflorum, S. hevisonii, and S. macrochaeta, highlighting the need for collection missions aimed exclusively at enriching the collection of wild relatives. Accessions having characterization data(7630) were used to assess diversity. The first three principal components contributed to >60% of variation. Maximum diversity was observed in the collection from Nigeria for both qualitative and quantitative traits. Mean values indicated significant differences between basic and intermediate races for the traits studied. Among the races, accessions of guinea-caudatum for qualitative traits and those of caudatum for quantitative traits were highly diverse. The low intensity of the sorghum collection and the many geographical gaps in the collection underline the importance of launching collection missions to fill the gaps, particularly in regions of predominantly guinea sorghums.Genotyping of possible duplicate accessions is needed to identify duplicates in the collection. It is suggested that all passport information including georeferenced data of collection sites should be collected when samples are collected in gaps. | Hari Deo Upadhyaya Kothapally Narsimha Reddy Mani Vetriventhan Mohammed Irshad Ahmed Gumma Murali Krishna Mulinti Thimma Reddy Shailesh Kumar Singh | 2017 | The Crop Journal2017，5，6： | 0 |
| 18 | Mapping rice-fallow cropland areas for short-season grain legumes intensification in South Asia using MODIS 250 m time-series data显示文摘The goal of this study was to map rainfed and irrigated rice-fallow cropland areas across South Asia,using MODIS 250 m time-series data and identify where the farming system may be intensified by the inclusion of a short-season crop during the fallow period.Rice-fallow cropland areas are those areas where rice is grown during the kharif growing season(June–October),followed by a fallow during the rabi season(November–February).These cropland areas are not suitable for growing rabi-season rice due to their high water needs,but are suitable for a short-season(≤3 months),low water-consuming grain legumes such as chickpea(Cicer arietinum L.),black gram,green gram,and lentils.Intensification(double-cropping)in this manner can improve smallholder farmer’s incomes and soil health via rich nitrogen-fixation legume crops as well as address food security challenges of ballooning populations without having to expand croplands.Several grain legumes,primarily chickpea,are increasingly grown across Asia as a source of income for smallholder farmers and at the same time providing rich and cheap source of protein that can improve the nutritional quality of diets in the region.The suitability of rainfed and irrigated rice-fallow croplands for grain legume cultivation across South Asia were defined by these identifiers:(a)rice crop is grown during the primary(kharif)crop growing season or during the north-west monsoon season(June–October);(b)same croplands are left fallow during the second(rabi)season or during the south-east monsoon season(November–February);and(c)ability to support low water-consuming,short-growing season(≤3 months)grain legumes(chickpea,black gram,green gram,and lentils)during rabi season.Existing irrigated or rainfed crops such as rice or wheat that were grown during kharif were not considered suitable for growing during the rabi season,because the moisture/water demand of these crops is too high.The study established cropland classes based on the every 16-day 250 m normalized difference vegetation index(NDVI)time series for one year(June 2010–May 2011)of Moderate Resolution Imaging Spectroradiometer(MODIS)data,using spectral matching techniques(SMTs),and extensive field knowledge.Map accuracy was evaluated based on independent ground survey data as well as compared with available sub-national level statistics.The producers’and users’accuracies of the cropland fallow classes were between 75%and 82%.The overall accuracy and the kappa coefficient estimated for rice classes were 82%and 0.79,respectively.The analysis estimated approximately 22.3 Mha of suitable rice-fallow areas in South Asia,with 88.3%in India,0.5%in Pakistan,1.1%in Sri Lanka,8.7%in Bangladesh,1.4%in Nepal,and 0.02%in Bhutan.Decision-makers can target these areas for sustainable intensification of short-duration grain legumes. | Murali Krishna Gumma Prasad S.Thenkabail Pardharsadhi Teluguntla Mahesh N.Rao Irshad A.Mohammed Anthony M.Whitbread | 2016 | International Journal of Digital Earth2016，9，10： | 0 |
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