Hydrological Effects of Planted Forest Litters and Soils in Alpine Region of Qinghai Province

CHEN Chao; HE Kang-ning; ZOU Yang; WANG Shi-lei; CAO Guang-yue; XU Te

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Hydrological Effects of Planted Forest Litters and Soils in Alpine Region of Qinghai Province

- Hydrological Effects of Planted Forest Litters and Soils in Alpine Region of Qinghai Province
- Bulletin of Soiland Water Conservation Vol. 32, Issue 5, Pages: 1-5(2013)
- 作者机构：
  
  北京林业大学水土保持与荒漠化防治教育部重点实验室,北京,100083
- 作者简介：
- 基金信息：
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- Published：2013
- 稿件说明：
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CHEN Chao, HE Kang-ning, ZOU Yang, et al. Hydrological Effects of Planted Forest Litters and Soils in Alpine Region of Qinghai Province[J]. Bulletin of Soiland Water Conservation, 2013, 32(5): 1-5.
DOI：

CHEN Chao, HE Kang-ning, ZOU Yang, et al. Hydrological Effects of Planted Forest Litters and Soils in Alpine Region of Qinghai Province[J]. Bulletin of Soiland Water Conservation, 2013, 32(5): 1-5. DOI：

摘要

以青海省大通县宝库林场5种典型人工林的枯落物层和土壤层为研究对象，对其水文效应进行了初步研究。结果表明：(1)枯落物储量为34.69~67.84t/hm

，大小为落叶松林 > 云杉落叶松混交林云杉林 > 白桦林 > 云杉白桦混交林。枯落物最大持水量为80.30~150.73t/hm

，持水量最大为云杉落叶松混交林，其次是落叶松林，白桦林和云衫白桦混交林，最小为云杉林。云杉落叶松混交林有效拦蓄能力最强，为94.32t/hm

；云杉林有效拦蓄能力最弱，为45.40t/hm

。(2)未分解层枯落物浸水在8h左右基本达到饱和状态，而半分解层在6h已经接近饱和；在0.5h内，枯落物吸水速率达到最大，6h左右下降速度明显放缓。(3)土壤层持水能力最强的是云杉落叶松混交林，最小的是云杉白桦混交林。

Abstract

A preliminary study of the hydrological effects of litters layer and soil layer was carried out in five kinds of planted forest stands in Baoku forest farm

Qinghai Province.Results showed that(1)the total litter storage capacity was about 34.69-67.84 t/hm2which was in the order of Larxi principis-rupprechtii Mayr>Picea asperata Mast mixed Larix principis-rupprechtii Mayr>Picea asperata>Betula platyphylla Suk>Picea asperata Mast mixed Betula platyphylla Suk.The maximum water holding capacity ranged from 80.30 to 150.73 t/hm2

which was in the order of Picea asperata Mast mixed Larix principis-rupprechtii Mayr> Larix principisrupprechtii Mayr>Betula platyphylla Suk>Picea asperata Mast mixed Betula platyphylla Suk>Picea asperata Mast.The modified intercept amount of Picea asperataMast mixed Larix principis-rupprechtii Mayr was the strongest;being 94.32 t/hm2;and Picea asperata Mast was the worst，being 45.40 t/hm2.(2)Semi-decomposition litter reached saturation in 6 h;and without-decomposition litter.in 8 h.In first half-hour

absorption rate was the largest

and the rate was obviously slowed down after 6 h.(3)The soil water-holding capacity of Picea asperata Mast mixed Larix principis-rupprechtii Mayr was the strongest

while Picea asperata Mast mixed Betula platyphylla Suk was the worst.

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