The collapse mainly occurs in the low - water years or during the beginning of the dry season and rain season in a year.
塌陷主要分布在松散层较薄的第四系覆盖区，发生时间主要集中于枯水年份或年内枯水期和丰水期初。
According to the shallow mountain, the characteristics of low water content, choosing afforestation season planting is given priority to with spring, winter, rainy season.
根据山区土层浅薄，含水量低的特点，造林季节选择以春季、冬季、雨季造林为主。
Extremely uneven runoff distribution in a year and low water flow in dry season are causative of deterioration of the river water.
年内径流分配极不均匀、枯水期流量小是导致河流水质恶化的主要原因。
The results show that the soil water conduction of the plantation was very poor and the available water content was very low during the growing season.
结果表明，在年生长期中，刺槐林地水分条件严酷、土壤有效水分少。
Pot with fresh, cold water (enough to flood and half of bamboo) boil, will go to pot bamboo cook for 25 minutes after the big switch to low heat and simmer 90 minutes, season with salt.
大锅里注入清水（足够淹及竹筒的一半）烧开，将竹筒移至锅里以大火炖25分钟后转小火继续炖90分钟，加盐调味即可。
Boil the water. Put in all ingredients. Boil over high heat for 20 minutes. Then turn to low heat and cook for 1 1/2 hours. Season with salt. Serve.
煮沸清水，放入全部材料，用大火煮二十分钟，再用小火熬煮一个半小时，下盐调味，即可饮用。
Throughout the growing season, low Rn and air temperature surpressed stand transpiration during spring. Such control of Rn persisted into summer when sufficient soil water was availiable.
从整个生长季来看，春季该林分蒸腾主要受太阳净辐射和大气温度的抑制，在夏季土壤水分充足时，太阳净辐射仍是控制沙地杨树人工林的蒸腾活动主要因子。
During dry season with low hydraulic load, the system is at an anaerobic condition due to insufficient water mobility, and phosphorus release from the media occurs.
旱季时由于水力负荷极小，水体流动性差，系统内处于厌氧状态，出现了磷的释放。
The upper reaches deforestation of Minjiang River presents positive correlation with the change of low water flow, which proves it is the main factor that generates decrease of runoff in dry season.
岷江上游森林破坏与枯水流量变化是呈正相关的，岷江上游森林破坏是引起枯水期径流减少的重要原因。
The water utilization ratio and benefit from power generation have been low, especially in flood season, since the Feilaixia Water Project has been put into service in 1999.
飞来峡水利枢纽运行以来，始终表现出水量利用率低、发电效益低的状况，汛期尤甚。
The water utilization ratio and benefit from power generation have been low, especially in flood season, since the Feilaixia Water Project has been put into service in 1999.
飞来峡水利枢纽运行以来，始终表现出水量利用率低、发电效益低的状况，汛期尤甚。
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