By Jianfeng Zhang

This booklet regularly specializes in ecological techniques for combating and controlling non-point resource (NPS) toxins at the foundation of forestry measures. as well as the consequences of ecological keep watch over, it introduces readers to the features of NPS pollutants in Taihu Lake watershed, water eutrophication review tools, and strength countermeasures.

Given the an important function of floor runoff and soil erosion in generating water toxins, the publication provides forestry measures to wrestle them, akin to the construction of public welfare forests, city forestry, planting strategies for hedgerows on slope land, the institution of protect belts, nitrogen and phosphorus absorption by means of hydrophytes, and sustainable administration for wetlands. in addition, the consequences are supplemented by means of a wealth of numerical calculations, tables, figures and images. The publication deals a precious advisor for researchers, educators and execs operating within the components of water atmosphere, water safety and ecological construction.

Prof. Jianfeng Zhang works on the Institute of Subtropical Forestry, chinese language Academy of Forestry, Fuyang, China.

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Sample text

Its aim is to form a network of regional ecological protective forest based on the forest patches, such as embankment defense forest, farmland protection forest, village protection forest, and so forth (see Figs. 2). The tree species selection for these protective forests is principally based on the capacity of waterlogging resistance, and the taller arbor trees are the better. Usually, the structure of the forest is the trees combined with shrubs and grasses. The ecological protective forest model requires a certain scale, and in general as a rule, the spacing is about 30 m width and 500 m length of the forest shelter belt in order to perform the ecological functions of forest.

Bungei, Ginkgo biloba, and other timber trees; M. ; Shorttube Lycoris, Cassia obtusifolia, Rehmannia glutinosa, Salvia miltiorrhiza, Pinellia ternate, Eucommia ulmoides, Lycium, Carthamus tinctorius, Mentha haplocalyx, and other herbaceous plants; Cannabis sativa, Alchornea davidii, Eleusine indica, Sesbania cannabina, Juncus effuses, and other fiber plants; Common Yam, Lilium brownii var. viridulum, Heleocharis dulcis, and other starch-rich plants (see Figs. 10). This model should be combined with sewage treatment and solid waste treatment in villages, forming circular production structure and achieving the large-scale and pollution-free organic agriculture (Yong and Chen 2002).

On the other hand, for channel C, the land use type is garden under the conditions of little chemical fertilizer application. Furthermore, the altitude of the sampling site is little high, which means that there are few sediments. 16 mg L−1 was recoded in channel D (Fig. 9). It is clear that mostly P comes from soils due to soil erosion goes to channels. 1, the sample site of channel I is at the entrance and the upper reaches of the channel are farm land which implies that more fertilizers and pesticides were applied.

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