Preliminary Study on Hydrological Effect of Major Forests in Helan Mountain Area

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cje ›› 1994, Vol. ›› Issue (4): 55-60.

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Preliminary Study on Hydrological Effect of Major Forests in Helan Mountain Area

Xu Wanren¹, Zhang Yongqing², Du Heping³, Li Liying⁴

1. Ningxia Science and Technology Committee, Yinchuan 750001;
2. NingxiaAgricultral College, Yongnign 750105;
3. Helan Mountain Natural Reserve Administrative Bureau, Yinchuan 750003;
4. Huinong County Forestry Bureau, 753200

Received:1992-10-13 Revised:1993-06-21 Online:1994-08-10

Abstract

Abstract: Investigation shows that in major forests the percentage of canopy interception is 23.3-29.6%,dry weight of litterfalls is l2.6-39.5t. ha^-1, and water absorption capacity of litter is 230.3-612.7%,The surface soil(0-20cm)planted with major forests can conserve water about 154.60-275.61t. ha^-1(15.5-27.6mm). The water abrorption capacity of forest litter is 2.3-6.2 times larger than its weight.

Key words: Pinus massoniana, fine root production, turnover rate, Three Gorges Reservoir Area.

CLC Number:

S715.7

Xu Wanren, Zhang Yongqing, Du Heping, Li Liying. Preliminary Study on Hydrological Effect of Major Forests in Helan Mountain Area[J]. cje, 1994, (4): 55-60.

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Preliminary Study on Hydrological Effect of Major Forests in Helan Mountain Area

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