Author(s): Damavandi AA, Rahimi M, Yazdani MR, Noroozi AA
The DROUGHT caused a series of effects on many sectors of economy, especially natural resources. During two last decades, Iran has suffered from several severe to extreme agricultural DROUGHTs which caused significant decreases in rangeland and agriculture yields. This paper discusses the detection of agricultural DROUGHT severity over the RANGELANDS of Markazi Province between 2000 and 2014 using remotely sensed data. Vegetation Temperature Condition Index (VTCI) is a near-real time DROUGHT assessment and monitoring approach which have been developed using Terra-MODIS normalized difference vegetation index (NDVI) and Land Surface Temperature (LST) products. VTCI is defined as the ratio of LST differences among pixels with a specific NDVI value in a sufficiently large study area. VTCI has capability of DROUGHT stress classification which therein lower VTCI is for DROUGHT and higher one for wet conditions. The ground-measured precipitation data from the synoptic stations of Markazi Province are used to validate the VTCI DROUGHT monitoring approach (11 stations). For this objective, after the calculation of Standardized Precipitation Index) SPI) with different periods and VTCI month of July during 2000 to 2014 (warm and cold edges from NDVI and LST scatter gram extracted), linear regression analysis between VTCI (15 maps) and SPI 1, 3, 6, 9, 12, 18 months were surveyed and finally, the best map was extracted. Based on the statistical analysis, higher correlations were found for July 2006 (R2=0.73 for warm edge and R2=0.86 for cold edge) and the best linear correlation was created for SPI-18 month in July. Results showed that within VTCI classified map, moderate and low DROUGHT classes constituted most area of studied region. Also, the results showed that VTCI is closely related not only to recent rainfall events but also to past rainfall amount (18 month) indicating that VTCI is a better and near-real time DROUGHT monitoring approach for RANGELANDS.
Referred From: https://www.sid.ir/paper/257579/en
Author(s): Amiri MJ, Eslamian SS
Author(s): Dutta D, Kundu A, Patel NR, Saha SK, Siddiqui AR
Author(s): Carneiro C, Scheer MB, Possetti GRC ( 2018) Phosphorus behaviour in a river during periods of drought and rain
Author(s): Li X, Li Y, Chen A, Gao M, Slette IJ, et al.
Author(s): Ali S, Henchiri M, Yao F, Zhang J
Author(s): Hadian F, Jafari R, Bashari H, Tarkesh M, Clarke KD
Author(s): Kong W, Sun OJ, Chen Y, Yu Y, Tian Z
Author(s): Tabari H, Abghari H, Hosseinzadeh Talaee P
Author(s): Larson KJ, BaÅaǧaoǧlu H, Marino MA
Author(s): Vörösmarty CJ, Green P, Salisbury J, Lammers RB
Author(s): Correa-Ibanez R, Keir G, McIntyre N
Author(s): Dutta R
Author(s): Xulu S, Peerbhay K, Gebreslasie M, Ismail R
Author(s): Brown ME, Pinzón JE, Didan K, Morisette JT, Tucker CJ
Author(s): Lunetta RS, Knight JF, Ediriwickrema J, Lyon JG, Worthy LD
Author(s): Fensholt R, Rasmussen K, Nielsen TT, Mbow C
Author(s): Nusrath A, Ahmadi H
Author(s): Demissie B, Frankl A, Haile M, Nyssen J
Author(s): Nanzad L, Zhang J, Tuvdendorj B, Nabil M, Zhang S, et al.
Author(s): Mkhabela MS, Bullock P, Raj S, Wang S, Yang Y
Author(s): Gu Y, Hunt E, Wardlow B, Basara JB, Brown JF, et al.
Author(s): Son NT, Chen CF, Chen CR, Chang LY, Minh VQ
Author(s): Mbatha N, Xulu S
Author(s): Su Z, Yacob A, Jun W, Gerbert R, He Y, et al.
Author(s): Qin Q, Ghulam A, Zhu L, Wang L, Li J, et al.
Author(s): Funk C, Budde ME
Author(s): Panda DK, Mishra A, Jena SK, James BK, Kumar A
Author(s): Polemio M, Casarano D
Author(s): Thomas BF, Famiglietti JS, Landerer FW, Wiese DN, Molotch NP, et al.
Author(s): Beck PSA, Atzberger C, Høgda KA, Johansen B, Skidmore AK
Author(s): Hoagland SJ, Beier P, Lee D
Author(s): Yousefi S, Moradi H, Boll J, Schönbrodt-Stitt S
Author(s): Yousefi S, Sadeghi SH, Mirzaee S, Ploeg MVD, Keesstra S, et al.
Author(s): Khezri E, Maleknia R, Zeinivand H, Badehin Z
Author(s): Breshears DD, Whicker JJ, Johansen MP, Pinder JE
Author(s): Wang G, Wang J, Zou X, Chai G, Wu M, et al.
Author(s): Bochet E, GarcíaâFayos P, Poesen J
Author(s): Khan J, Wang P, Xie Y, Wang L, Li L
Author(s): Kadam AK, Kale SS, Pande NN, Pawar NJ, Sankhua RN
Author(s): Jha MK, Chowdary VM, Kulkarni Y, Mal BC
Author(s): Tucker CJ