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- Title
Challenge to the desertification reversion in Horqin Sandy Land.
- Authors
Zhao Xue-Yong; Zhang Chun-Min; Zuo Xiao-An; Huang Gang; Huang Ying-Xin; Luo Ya-Yong; Wang Shao-Kun; Qü Hao
- Abstract
Analyses of the changes in desertified land area, water resource availability, land use, and plant productivity in Horqin Sandy Land in recent 50 years showed that from 1950 to the late 1980s, the land desertification in Horqin Sandy Land had a rapid expansion, but reversed since then. The annual runoff of Xiliaohe River decreased consistently, and in 1999, the middle reach at Tongliao section was dried up. In recent 20 years, the water table of Xihu Lake was decreased by about 10 m, and dried up in 2001. The above-ground biomass of grasslands decreased from 520 g · m-2 in 1937 to 197 g · m-2 in 2005. The main cause of these results was the change of land use pattern, i. e., the overuse of water resources for re-vegetation or cropland irrigation. Water resources reduction was the major challenge to the desertification reversion in Horqin Sandy Land.
- Subjects
HORQIN Desert (China); CHINA; DESERT plants; DESERTIFICATION; WATER supply; LAND use; FARM produce; PLANT growth; AGRICULTURAL pollution
- Publication
Yingyong Shengtai Xuebao, 2009, Vol 20, Issue 7, p1559
- ISSN
1001-9332
- Publication type
Article