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阿克苏河流域耕地面积的增加,直接影响着塔里木河水盐的变化。流域灌溉区灌溉面积已由1949年的10.2×104hm2增至现在的29.8×104hm2左右;年进入塔里木河的盐量由1949年的16×108kg增至现今的150×108kg。其次,地下水监测剖面资料表明,地下水矿化度居高不下,矿化度的梯度趋势非常明显,阿拉尔生态监测区地下水已受到农田排水的严重侵蚀。又据阿拉尔综合生态监测站8条排、退水渠2007年的资料显示,塔北截洪排站年径流量为2.112×108m3,输出总盐量为28.75×108kg;塔北二截排站年径流量为0.255×108m3,输出总盐量为8.04×108kg。反映出塔北截洪排、塔北二截排是各退、排水渠中的主力军。8条退、排水渠,特别是排水渠其含盐量均在10g/L以上,某些站含盐量甚至超过16g/L。不难肯定,退、排水渠水量的注入,势必严重影响到塔里木河干流沿线生态环境的变化。
The increase of arable land in Aksu River Basin directly affects the change of water and salt in the Tarim River. The irrigated area in the basin has increased from 10.2 × 104hm2 in 1949 to about 29.8 × 104hm2 now. The annual salt input into the Tarim River has increased from 16 × 108kg in 1949 to 150 × 108kg nowadays. Secondly, the data of groundwater monitoring profiles show that the groundwater salinity is very high and the gradient of salinity is very obvious. The groundwater in the Alar eco-monitoring area has been seriously eroded by farmland drainage. According to the Alar comprehensive ecological monitoring station 8 rows, back drains in 2007 the data show that the Tarim interception flood discharge annual runoff of 2.112 × 108m3, the total output of 28.75 × 108kg salt; The runoff is 0.255 × 108m3, the total salt output is 8.04 × 108kg. Reflect the flood blocking tower in northern Tarim, Tarim II is the main cut-off, drainage in the main force. 8 back, drains, especially drains its salt content is above 10g / L, some stations even more than salt 16g / L. It is not hard to confirm that the injection of drainage and drainage water will surely seriously affect the ecological environment along the mainstream of the Tarim River.