Temporal and spatial variations of grassland desertification monitoring in Tibet of China
文献类型： 外文期刊
第一作者： Xu, B.
作者： Xu, B.;Li, J. Y.;Jin, Y. X.;Qin, Z. H.;Wang, D. L.;Ma, H. L.;Yang, X. C.;Li, J. Y.;Wang, Z. L.;Wu, M. Q.;Zhang, J.
作者机构：
期刊名称：INTERNATIONAL JOURNAL OF REMOTE SENSING （ 影响因子：3.151； 五年影响因子：3.266 ）
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： Tibet, the largest region of the Qinghai-Tibet Plateau, is undergoing extensive grassland deterioration and desertification due to both human and natural factors. Alpine meadow and grassland restoration is difficult after degradation; consequently, the desertification of the Tibetan grassland has attracted substantial social attention. This article considered Amdo, Baingoin, Coqen, and Zhongba counties in Tibet as the study areas, employed remote-sensing data, and developed Tibetan grassland desertification classification indices based on field surveys. Moreover, this study used spectral mixture analysis (SMA) methods to interpret remote-sensing image data from the study areas during three periods (1990, 2000, and 2009) and considered the bare sand (gravel) area proportion as the main basis for the evaluation of grassland desertification. The results of this study demonstrate that the slightly, moderately, and severely desertified grasslands of the monitoring zone covered a total area of 114,113.16km(2) in 1990, accounting for 82.12% of the study area. The area exhibited no change in 2000 and decreased by 4472.31km(2) in 2009. The severely desertified grassland area declined from 1990 to 2009. The degree of grassland desertification in these four Tibetan counties diminished from 1990 to 2009, and the grassland desertification area exhibited a gradual reduction during the same period. Regarding other soil coverage types, the ice and snow area markedly changed and declined to approximately one-third of its original extent during these 20years, and most of the ice and snow area was converted to bare land and various types of desertified grassland.
分类号： TP
- 相关文献
作者其他论文 更多>>
-
Increasing humification and reducing CH4 emission during rice straw fermentation: the role of Streptomyces rochei ZY-2
作者：Fu, B.;Wei, Z.;Fu, B.;Zhang, J.;Huang, H.;Wang, Q.;Qu, P.;Gao, B.
关键词：Streptomyces rochei ZY-2; Aeration intensity; Humification; GHG emissions
-
THE VARIETY-SPECIFIC IMPROVEMENT EFFECTS OF ALFALFA ON SOIL PROPERTIES AND MICROBIAL COMMUNITIES IN SALINE-ALKALI SOILS
作者：Li, J. Y.;Wang, Q. J.;Zhang, H. B.;Chen, A. H.;Sun, G. Y.;Zhou, C. W.;Ao, L.;Ao, L.
关键词：alfalfa cultivation; saline-alkali soil restoration; sustainable agriculture; bacterial community; fungal community; archaeal community
-
EFFECT OF LAND-USE PATTERNS ON SOIL ENZYMATIC ACTIVITY AND MICROBIAL DYNAMICS IN CARBON, NITROGEN AND PHOSPHORUS CYCLING OF WETLANDS IN THE LESSER KHINGAN MOUNTAINS, NORTHEASTERN CHINA
作者：Li, J. Y.
关键词：wetland ecosystem; land use change; carbon cycling; soil biodiversity; sustainable soil management
-
Prediction of raw meat texture and myopathic severity of broiler breast meat with the wooden breast condition by hyperspectral imaging
作者：Liu, Q.;Sun, J.;Pang, B.;Zhuang, H.;Yoon, S. -C;Bowker, B.;Yang, Y.;Zhang, J.
关键词：MORS; meat quality; woody breast myopathy; broiler; shear force
-
Development and validation of a liquid chromatography-mass spectrometry method for free monosaccharide analysis in milk from 8 species
作者：Qi, Y. J.;Lu, S. C.;Zhao, X. W.;Chen, M. Q.;Song, L.;Zhang, J.;Zheng, N.;Wang, J. Q.;Zhang, Y. D.;Qi, Y. J.;Lu, S. C.;Zhao, X. W.;Chen, M. Q.;Song, L.;Zhang, J.;Zheng, N.;Wang, J. Q.;Zhang, Y. D.;Qi, Y. J.;Lu, S. C.;Zhao, X. W.;Chen, M. Q.;Song, L.;Zhang, J.;Zheng, N.;Wang, J. Q.;Zhang, Y. D.
关键词：free monosaccharide; milk composition; LC-MS; method validation; neonatal nutrition
-
The Complete Mitochondrial Genome of the Chinese Strain of Haemonchus contortus ChinHco
作者：Li, J. Y.;Gong, G. W.;Wang, F. W.;Pei, L.;Li, Y. N.;Zhu, C. X.;Luo, X. P.;Lai, J.;Xu, P. W.;Zhao, X. C.;Liu, Y. F.;Fan, F. J.;Li, J.;Li, J.
关键词：H. contortus; mitochondrial genome; nanopore sequencing; SURFSeq 5000; Chinese Strain ChinHco
-
Simultaneous quantification of oxyclozanide and levamisole in milk via ultra-high-performance liquid chromatography tandem mass spectrometry: A validated high-sensitivity approach for veterinary residue surveillance
作者：Dai, G.;Sun, K.;Zhou, Y.;Li, B.;Wang, Q.;Qiu, Y.;Zhou, X.;Zhang, J.;Dai, G.;Sun, K.;Zhang, J.;Peng, X.
关键词：veterinary drug residues; UPLC-MS/MS; food safety; antiparasitic agents; milk
